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WO2025106859A1 - Composition de séquestration de dioxyde de carbone pour la liaison et la stabilisation de matériaux d'agrégat - Google Patents

Composition de séquestration de dioxyde de carbone pour la liaison et la stabilisation de matériaux d'agrégat Download PDF

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Publication number
WO2025106859A1
WO2025106859A1 PCT/US2024/056189 US2024056189W WO2025106859A1 WO 2025106859 A1 WO2025106859 A1 WO 2025106859A1 US 2024056189 W US2024056189 W US 2024056189W WO 2025106859 A1 WO2025106859 A1 WO 2025106859A1
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WIPO (PCT)
Prior art keywords
proportion
mass
road
binder composition
composition
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PCT/US2024/056189
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English (en)
Inventor
Adrian SAVU
Florin Oancea
Benoit LORANGER
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Carbon Crusher Inc
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Carbon Crusher Inc
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Publication of WO2025106859A1 publication Critical patent/WO2025106859A1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/30—Coherent pavings made in situ made of road-metal and binders of road-metal and other binders, e.g. synthetic material, i.e. resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/22—Natural resins, e.g. rosin
    • C04B26/24—Cellulosic waste liquor, e.g. sulfite lye
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/08—Slag cements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/602—Oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/116—Molecular sieves other than zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/25—Coated, impregnated or composite adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4591—Construction elements containing cleaning material, e.g. catalysts
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction

Definitions

  • This invention relates generally to the field of road construction and, more specifically, to new and useful carbon dioxide sequestering composition for binding and stabilization of aggregate materials in the field of target biomolecule production and purification via chromatography.
  • U.S. Patent No. 7758280 relates to a composition consisting of coal ash and an emulsion based on petroleum resin and a method of applying it to stabilize and bind the aggregates that constitute the foundation of the road.
  • the emulsion contains petroleum resin, 15 to 45 weight percent lignosulfonate, and 6 to 8 weight percent alkylphenol surfactant.
  • Lignosulfonate contains at least ammonium, calcium, or sodium lignosulfonate.
  • the application process involves the use of an emulsion volume ranging from 2.26 to 6.79 liters per square meter (0.5 to 2.5 gallons per square yard), depending on the type of aggregates and the type of coal ash used.
  • PCT Application No. 2000/049229 relates to a method of making a foundation for roads, which includes the application of a composition that includes a lignin or lignosulfonate-based binding agent, a binding additive selected from cement, lime, fly ash, calcium sulfate or slag and possibly water, and mixing the slurry thus obtained with the soil at the base of the road, and possibly also a filler material.
  • a composition that includes a lignin or lignosulfonate-based binding agent, a binding additive selected from cement, lime, fly ash, calcium sulfate or slag and possibly water, and mixing the slurry thus obtained with the soil at the base of the road, and possibly also a filler material.
  • U.S. Patent No. 4129449 relates to a composition for strengthening road base soil layers consisting of 96.5% Portland cement, 0.2 to 0.8% by mass lignosulfonate with a molecular weight of 400 to 700,000 Daltons, 0.4 to 0.5% by mass sodium tripolyphosphate, 0.2 to 0.3% by mass calcium stearate, 1.5 to 2.0% by mass calcium chloride, and 0.5 to 0.5% by mass 1.0 wt.% high silica slag.
  • FIGURE 1 is a schematic representation of one variant of the road binder composition
  • FIGURE 2 is a schematic representation of one variant of the road binder composition.
  • FIGURE 3 is a schematic representation of one variant of the road composition that includes one variant of the road binder composition.
  • FIGURE 4 is a schematic representation of one variant of the road composition that includes one variant of the road binder composition.
  • FIGURE 5 is a chart representation of a grading curve for 0/4 millimeter crushed rock utilized for unconfined compressive strength testing of variants of the road composition.
  • FIGURE 6 is a chart representation of the unconfined compressive strengths of variants of the road composition including variants of the road binder composition.
  • the term “set,” as utilized herein, can include a single instance or multiple instances of an associated object.
  • Descriptors such as “first,” “second,” “third,” etc., as utilized herein, do not imply a sequence or order unless otherwise specified but do imply separate instances of the associated object.
  • road composition refers to a heterogenous and compacted mixture of road materials that form one or more of a set of road layers, including a sub-base, a base course, a binder course, and/or a surface course. Therefore, characteristics, properties, or attributes of the road composition described herein refer to bulk characteristics, properties, or attributes of the road composition on the resolution of the square meter or cubic meter scale and may vary locally within smaller samples of the road composition.
  • the road binder composition 100 includes a functionalized lignin proportion 110 between 5% and 40% by mass; a carbon-mineralizing proportion 120 between 10% and 35% by mass; and a porous siliceous material proportion 130 between 2% and 15% by mass.
  • a road binder composition 100 includes: a lignosulfonate proportion 112 between 5% and 40% by mass characterized by a molecular mass greater than 2.5 kilodaltons and less than 125 kilodaltons; a carbon-mineralizing proportion 120 between 10% and 35% by mass; and a porous siliceous material proportion 130 between 2% and 15% by mass.
  • the road binder composition 100 includes: a carboxylated Kraft lignin proportion between 5% and 40% by mass characterized by a molecular mass greater than 50 kilodaltons and less than 400 kilodaltons; a carbon-mineralizing proportion 120 between 10% and 35% by mass; and a porous siliceous material proportion 130 between 2% and 15% by mass.
  • one variant of the road binder composition 100 includes: a lignosulfonate proportion 112 between 20% and 30% by mass and characterized by a molecular mass between 2.5 kDa and 125 kDa; a diatomite proportion 132 between 5% and 10% by mass; and a binding additive proportion 122 between 50% and 55% by mass.
  • a road composition 200 includes: an aggregate proportion 210 greater than 90% by mass; and a road binder proportion 220 less than 10% by mass and greater than 1% by mass.
  • the road binder proportion 220 further includes: a functionalized lignin proportion 110 between 5% and 40% by mass characterized; a carbon-mineralizing proportion 120 between 10% and 35% by mass; and a porous siliceous material proportion 130 between 5% and 15% by mass.
  • a road composition 200 includes: an aggregate proportion 210 greater than 90% by mass; and a road binder proportion 220 less than 10% by mass.
  • the road binder proportion 220 further includes: a lignosulfonate proportion 112 between 5% and 40% by mass characterized by a molecular mass greater than 2.5 kilodaltons and less than 125 kilodaltons; a carbon-mineralizing proportion 120 between 10% and 35% by mass; and a porous siliceous material proportion 130 between 5% and 15% by mass.
  • a carbon-sequestering road binder composition 100 for binding aggregate materials during road construction includes a combination of ingredients that function together to: increase the mass of carbon dioxide absorbed and sequestered by roads integrating the road binder composition 100 for a given mass of road material; reduce the unbound concentration of toxic elements or compounds within roads integrating the road binder composition 100; and improve the material properties (e.g., compressive strength) of roads integrating the road binder composition 100.
  • the road binder composition 100 includes a functionalized lignin proportion 110 (e.g., lignosulfonate, carboxylated Kraft lignin) acting as a naturally derived binding agent and surfactant; a carbon-mineralizing proportion 120 functioning as a carbonating agent; and a porous siliceous material proportion 130 functioning as a sorptive agent for potentially toxic elements or compounds present in other components of the road binder composition 100 and as a carbon dioxide concentrator.
  • a functionalized lignin proportion 110 e.g., lignosulfonate, carboxylated Kraft lignin
  • a carbon-mineralizing proportion 120 functioning as a carbonating agent
  • a porous siliceous material proportion 130 functioning as a sorptive agent for potentially toxic elements or compounds present in other components of the road binder composition 100 and as a carbon dioxide concentrator.
  • the road binder composition 100 is utilized as an alternative to carbon-intensive binders, such as bitumen or Portland cement that are responsible for a net increase in carbon dioxide in the atmosphere, and instead sequesters significant proportions of carbon dioxide without sacrificing target mechanical properties of the road. Additionally, the road binder composition 100 can be utilized in road construction to prevent leaching of toxic elements or compounds from the road composition via on the inclusion of the porous siliceous material proportion 130 within the road binder composition 100.
  • the road binder composition 100 can define self-healing properties based on the breakdown of particles of the carbon-mineralizing proportion, which releases alkaline earth metal species (e.g., calcium ions, magnesium ions, calcium hydroxide) into the functionalized lignin proportion 110, causing carbon mineralization and strengthening of the material.
  • alkaline earth metal species e.g., calcium ions, magnesium ions, calcium hydroxide
  • the road binder composition 100 is useful for multiple purposes in the field of road construction.
  • the road binder composition 100 is particularly suited for use in road construction due to the road binder composition’s tendency to form suspensions based on the surfactant properties of lignosulfonates, thereby creating a sufficiently homogenous aqueous mixture of the constituent ingredients. Furthermore, the lignosulfonate provides a thixotropic effect, which enables distribution of the road binder composition 100 over an aggregate material layer via sprinkling instead of direct pouring, thereby facilitating integration into aggregate materials.
  • the road binder composition 100 is characterized by self-healing properties, which may be applicable to roads in environments with many freeze-thaw cycles.
  • the road binder composition 100 can release calcium oxide from the partially decarbonated eggshells in response to the formation of microcracks in the partially decarbonated eggshell particles. Upon release, the calcium oxide may facilitate further cementitious reactions within the binder, thereby “healing” the microcracks in the road composition.
  • the road composition effectively valorizes industrial byproducts, such as lignosulfonate, slag, and partially decarbonated eggshells, to increase the sequestration capacity of road compositions while also preventing seepage of potentially toxic elements and compounds present in these industrial byproducts into the environment.
  • industrial byproducts such as lignosulfonate, slag, and partially decarbonated eggshells
  • the road binder composition 100 is an aqueous suspension including the functionalized lignin proportion 110, the carbon-mineralizing proportion 120, and the porous siliceous material proportion 130. More specifically, the road binder composition 100 can include a water proportion greater than 40% by mass. In particular, the road binder composition 100 is produced by mixing solid constituents, including the carbon-mineralizing proportion 120 and the porous siliceous material proportion 130, into an aqueous solution of the functionalized lignin proportion 110 and water.
  • the road binder composition 100 can be mixed onsite or offsite via a continuous or batch drum mixer, planetary mixer, twin shaft mixers, ribbon blenders, or any suitable mixing machinery that produces a sufficiently homogenous mixture of the constituents of the road binder composition 100 while preventing over-milling of the solid ingredients below the intended particle size distribution.
  • the road binder composition 100 is manufactured from an aqueous solution of functionalized lignin and water characterized by a ratio of functionalized lignin to water between 40:60 and 60:40 by mass. More specifically, the road binder composition 100 can be characterized by a ratio of functionalized lignin to water selected based on a target viscosity for the road binder composition 100 at various expected temperatures during road construction, an average molecular mass of the functionalized lignin proportion 110, a degree of functionalization of the functionalized lignin proportion 110, a humidity and temperature range at a target location of the road, based on target molecular mobility within the road binder composition 100, and/or for any other reason.
  • the road binder composition 100 includes a functionalized lignin proportion 110 consisting of lignin-based polymers functionalized with anionic functional groups such as sulfonic groups or carboxyl groups, thereby increasing the solubility and reactivity of the lignin-based compound and improving the capability of lignin as a binding agent. More specifically, the road binder composition 100 can include a functionalized lignin proportion 110 between 5% and 40% by mass.
  • the functionalized lignin proportion 110 can include a lignosulfonate proportion 112, a carboxylated Kraft lignin proportion, an organosolv lignin proportion, a sulfonated Kraft lignin proportion, an oxidized lignin proportion, a hydroxyalkylated lignin proportion, and/or a phenolated lignin proportion.
  • a lignosulfonate proportion 112 a carboxylated Kraft lignin proportion
  • an organosolv lignin proportion a sulfonated Kraft lignin proportion
  • an oxidized lignin proportion a hydroxyalkylated lignin proportion
  • phenolated lignin proportion phenolated lignin proportion
  • the road binder composition 100 includes a lignosulfonate proportion 112 functioning as the primary binding agent and as a surfactant that increases the concentration of carbon dioxide within the road binder composition 100, thereby enabling increased carbon sequestration by the carbon-mineralizing proportion 120. More specifically, the road binder composition 100 includes a lignosulfonate proportion 112 between 5% and 40% by mass.
  • the road binder can include a lignosulfonate proportion 112 characterized by a molecular mass greater than 2.5 kilodaltons and less than 125 kilodaltons, as this range of molecular masses results in desirable extant physical properties of the road binder composition 100 including suitable solubility of the lignosulfonate proportion 112 in water, suitable viscosity for distribution into aggregate material of a road, and suitable binding strength to provide mechanical support to the aggregate materials of a road.
  • the lignosulfonate proportion 112 when the lignosulfonate proportion 112 is combined with water in an aqueous solution, the lignosulfonate proportion 112 provides a surfactant effect, thereby lowering the surface tension of the aqueous solution and decreasing the solvation energy of carbon dioxide. Furthermore, the lignosulfonate proportion 112, via the aforementioned surfactant characteristics, can lead to micelle formation within the aqueous solution, thereby increasing the concentration of carbon dioxide dissolved in the aqueous solution. Thus, the lignosulfonate proportion 112 supports the target mechanical and chemical properties of the road binder composition 100 via intermolecular interactions between lignosulfonate molecules and by increasing the concentration of dissolved carbon dioxide and bicarbonate ions in the aqueous solution.
  • the lignosulfonate proportion 112 includes calcium lignosulfonate.
  • calcium lignosulfonate exhibits lower solubility in water and a tendency to precipitate as calcium carbonate (especially in alkaline environments) compared to alternative lignosulfonate compounds. Therefore, implementations of the road binder composition 100 including calcium lignosulfonate are applicable when the improved binding characteristics provided by precipitated calcium are useful for increasing road durability and/or compressive strength.
  • the road binder composition 100 includes a carbon-mineralizing proportion 120 or a binding additive proportion 122 to facilitate carbonation reactions with carbon dioxide dissolved in the aqueous solution of the functionalized lignin proportion 110 and water. More specifically, the road binder composition 100 can include a carbon-mineralizing proportion 120 between 10% and 35% by mass.
  • the carbon-mineralizing proportion 120 can include a set of sources of alkaline earth metal species such that each of the set of alkaline earth metal species contributes to improving structural and carbon sequestering properties of road compositions 200 including the road binder composition 100.
  • a subset of potential carbon-mineralizing materials for the road binder composition 100 is further described below.
  • the carbon-mineralizing proportion 120 includes a calcium oxide (i.e., burnt lime) source proportion. More specifically, the calcium oxide source proportion can include partially decarbonated eggshells, partially decarbonated seashells, agricultural lime waste, recycled building materials, responsibly sourced coral sand, and/or any other source of calcium oxide. Additionally, the road binder composition 100 can include a calcium oxide content between 1% and 15% by mass, despite a larger mass proportion of the calcium oxide source in the road binder composition 100. The carbon-mineralizing proportion 120 can include higher mass percentages of calcium oxide in applications involving softer aggregate materials to increase the stability of the resulting road composition 200.
  • a calcium oxide (i.e., burnt lime) source proportion can include partially decarbonated eggshells, partially decarbonated seashells, agricultural lime waste, recycled building materials, responsibly sourced coral sand, and/or any other source of calcium oxide.
  • the road binder composition 100 can include a calcium oxide content between 1% and 15% by mass, despite a larger mass proportion of the calcium oxide
  • the calcium oxide source proportion facilitates further dissolution of carbon dioxide in the road binder composition 100, the carbonation reaction of calcium ions, and the precipitation of calcium carbonate within the road binder composition 100, further solidifying road compositions 200 to which the road binder composition 100 is applied.
  • the calcium oxide source proportion includes partially decarbonated eggshells.
  • the carbon-mineralizing proportion can include partially decarbonated eggshells characterized by an average particle size between 1 millimeter and 2 millimeters, thereby ensuring that the partially decarbonated eggshells can fill voids within the aggregate material of the road composition. Additionally or alternatively, the carbon-mineralizing proportion can include partially decarbonated eggshells characterized by a calcium oxide concentration of greater than 18% by mass, which enables the partially decarbonated eggshells to sufficiently react with dissolved carbon dioxide within the road binder composition 100.
  • the partially decarbonated eggshells define mechanical properties that enable the release of additional calcium oxide in response to microcracks within individual partially decarbonated eggshell particles. Therefore, in this implementation, the road binder composition 100 can lend self-healing properties to road compositions 200 including the road binder composition 100, as cracks propagating through the road composition 200 release additional calcium oxide causing further carbonation within the road composition.
  • the road binder composition 100 includes a partially decarbonated eggshell proportion between 5% and 10% by mass. In another example of this implementation, the road binder composition 100 includes a partially decarbonated eggshell proportion between 10% and 35% by mass.
  • the road binder composition 100 can include a carbon-mineralizing proportion 120 consisting partially or entirely of partially decarbonated eggshells.
  • the carbon-mineralizing proportion includes slag, such as blast furnace slag, steel slag, ladle slag, and/or silicon green stone slag (hereinafter “SiGS”). More specifically, slag can include high concentrations of alkaline earth metal silicates, calcium oxide, and magnesium oxide, each of which can donate alkaline earth metal species to the road binder composition 100 and/or increase the pH of the road binder composition 100, thereby aiding the carbonation reaction. In one example of this implementation, the slag is characterized by an average particle size between 1 millimeter and 3 millimeters, thereby enabling slag particles to fill voids in the aggregate materials of the road composition.
  • SiGS silicon green stone slag
  • the road binder composition 100 can include one or more types of slag to improve the material properties of the road binder composition 100 and the carbon sequestration potential of the road binder composition 100.
  • slag includes large proportions of calcium oxide that reacts as described above, thereby causing cementitious carbonation reactions that strengthen the road composition and sequester carbon dioxide.
  • certain slags can include calcium and magnesium silicates in amounts depending on the source process of the slag, thereby increasing the carbon sequestering capacity of the slag.
  • the road binder composition 100 includes a slag proportion characterized by a calcium oxide content greater than 15% by mass to ensure the slag proportion provides the intended carbonation effect on the road composition.
  • the road composition includes a slag proportion up to 20% of the overall mass of the road composition including road aggregate materials to leverage the favorable compressive strength and hardness of certain slags (e.g., SiGS, blast furnace slag). Due to the favorable mechanical properties of certain slags (e.g., high compressive strength and high hardness), slag can be incorporated into the road composition in higher quantities than other carbon-mineralizing materials.
  • the road composition can include additional amounts of slag mixed into the aggregate materials separately from the aqueous suspension of the road binder composition 100. This example implementation is particularly effective in improving the compressive strength and durability of road compositions including soft aggregate materials such as soil or brittle minerals.
  • the carbon-mineralizing proportion 120 can include alkaline earth metal silicates, such as wollastonite (CaSiO ⁇ ). serpentinite olivine (Mg SiO ⁇ ), or any other alkaline earth metal silicate.
  • the road binder composition 100 can include an earth metal silicate proportion between 2% and 25% by mass.
  • the road binder composition 100 can leverage the carbon sequestering effects of alkaline earth metal silicates to further increase the total carbon sequestering potential of the road binder composition 100.
  • the carbon-mineralizing proportion 120 can include an olivine proportion.
  • the carbon-mineralizing proportion 120 can include a serpentinite proportion.
  • the carbon-mineralizing proportion 120 can include a wollastonite proportion.
  • the carbon-mineralizing proportion 120 can include combinations of the components described above. More specifically, the carbon-mineralizing proportion 120 can include: partially decarbonated eggshells; slag; alkaline earth metal silicates; a mixture of partially decarbonated eggshells, slag, and alkaline earth metal silicates; a mixture of partially decarbonated eggshells and slag; a mixture of partially decarbonated eggshells and alkaline earth metal silicates; or a mixture of slag and alkaline earth metal silicates.
  • the mechanical properties of each mixture depend on the proportion of each constituent material. Some examples of these mixtures are described in further detail below with respect to specific examples.
  • the porous siliceous material proportion 130 includes a diatomite proportion 132 derived from frustules of freshwater diatoms of the genera aulacoseira and actinocyclus, as these genera offer greater Brunauer-Emmett- Teller (hereinafter “BET”) surface area than diatomite derived from other diatoms.
  • BET Brunauer-Emmett- Teller
  • the diatomite proportion 132 is characterized by a BET surface area of at least 25 square meters per gram.
  • the porous siliceous material proportion 130 can be characterized by a high BET surface area, thereby amplifying the ability of the road binder composition 100 to capture toxins and promote carbonization.
  • the road binder composition 100 is integrated into a road composition 200 to bind aggregate materials in situ, and introduce additional binding additives including the carbon-mineralizing proportion 120 and the porous siliceous material proportion 130, to increase the amount of carbon dioxide sequestered by the road composition 200.
  • the road composition 200 includes an aggregate material proportion greater than 90% by mass and a road binder proportion 220 less than 10% by mass.
  • Some implementations of the road composition 200 include an aggregate proportion 210 greater than or equal to 98% by mass and a road binder proportion 220 less than or equal to 2% by mass.
  • the road composition 200 can include a road binder proportion 220 of up to 40%.
  • a range of proportions of the road binder composition 100 may be added to aggregate materials in situ to bind the aggregate materials for various environments and applications, thereby increasing the compressive strength and carbon sequestering capacity of the road composition 200.
  • the road binder composition 100 can be implemented according to a number of precise proportions that fall within the general ranges defined above.
  • a non-exhaustive fist of examples is described below, accompanied by data describing the characteristics of each example when used to bind a standardized aggregate material mixture.
  • a road binder composition 100 including a functionalized lignin proportion 110 of 25% by mass including sodium lignosulfonate; a carbon-mineralizing proportion 120 of 20% by mass including blast furnace slag; and a porous siliceous material proportion 130 of 5% including diatomite.
  • the remaining 50% of example 1 consists of water.
  • a road binder composition 100 includes a functionalized lignin proportion 110 of 25% by mass including calcium lignosulfonate; a carbon-mineralizing proportion 120 of 20% by mass including blast furnace slag; and a porous siliceous material proportion 130 of 5% including diatomite.
  • the remaining 50% of example 2 of the road binder composition 100 consists of water.
  • the road binder composition 100 includes a functionalized lignin proportion 110 of 25% by mass including ammonium lignosulfonate; a carbon-mineralizing proportion 120 of 20% by mass including blast furnace slag; and a porous siliceous material proportion 130 of 5% including diatomite.
  • the remaining 50% of example 3 consists of water.
  • the road binder composition 100 includes a functionalized lignin proportion 110 of 30% by mass including sodium lignosulfonate; a carbon-mineralizing proportion 120 of 15% by mass including a blast furnace slag proportion of 10% and a partially decarbonated egg shell proportion of 5%; and a porous siliceous material proportion 130 of 5% including diatomite.
  • the remaining 50% of example 4 consists of water.
  • the road binder composition 100 includes a functionalized lignin proportion 110 of 25% by mass including sodium lignosulfonate; a carbon-mineralizing proportion 120 of 15% by mass including a blast furnace slag proportion of 10% and a partially decarbonated egg shell proportion of 5%; and a porous siliceous material proportion 130 of 5% including diatomite.
  • the remaining 55% of example 5 consists of water.
  • the road binder composition 100 includes a functionalized lignin proportion 110 of 25% by mass including sodium lignosulfonate; a carbon-mineralizing proportion 120 of 15% by mass including a blast furnace slag proportion of 15%; and a porous siliceous material proportion 130 of 10% including diatomite.
  • the remaining 50% of example 6 consists of water.
  • the road binder composition 100 includes a functionalized lignin proportion 110 of 25% by mass including sodium lignosulfonate; a carbon-mineralizing proportion 120 of 20% by mass including an olivine proportion of 20%; and a porous siliceous material proportion 130 of 5% including diatomite.
  • the remaining 50% of example 7 consists of water.
  • the road binder composition 100 includes a functionalized lignin proportion 110 of 20% by mass including sodium lignosulfonate; a carbon-mineralizing proportion 120 of 25% by mass including an olivine proportion of 25%; and a porous siliceous material proportion 130 of 10% including diatomite.
  • the remaining 45% of example 8 consists of water.
  • the data presented below are derived from tests made by using the road binder composition 100 to bind a 50%:50% mixture of clayey soil and siliceous aggregates with the following characteristics, shown in TABLE 1 and TABLE 2 below.
  • control 1 a 100% clayey soil and siliceous aggregate mixture
  • control 2 a mixture of 1% of a 50%:50% lignosulfonate and water solution and 99% of the clayey soil and siliceous aggregate mixture.
  • TABLE 4 summarizes data characterizing the quantity of carbon dioxide sequestered and the content of potentially hazardous elements cadmium and nickel within various examples of the road composition 200.
  • the test protocol utilized to derive the carbon sequestering capacity of each example includes inserting the road composition 200 into a laboratory reactor in a high-pressure carbon dioxide-rich environment to accelerate the carbonation reaction in the road composition 200, and recording the drop in pressure of the carbon dioxide-rich environment over time.
  • Cadmium and nickel levels were calculated in the supernatant solution according to DIN EN 16171:2017, determination of elements by inductively coupled plasma mass spectrometry.
  • the road binder composition 100 includes a functionalized lignin proportion 110 of 20% by mass; a carbon-mineralizing proportion 120 of 50% by mass including a steel slag proportion of 20% by mass, an olivine proportion of 20% by mass, and a calcium oxide proportion of 10% by mass; and a porous siliceous material proportion 130 of 10% including diatomite.
  • the remaining 20% of example 9 of the road binder composition 100 consists of water.
  • the road binder composition 100 includes a functionalized lignin proportion 110 of 4% by mass; a carbon-mineralizing proportion 120 of 82% by mass including a steel slag proportion of 76% by mass, an olivine proportion of 4% by mass, and a calcium oxide proportion of 2% by mass; and a porous siliceous material proportion 130 of 10% including diatomite.
  • the remaining 4% of example 10 of the road binder composition 100 consists of water.
  • the road binder composition 100 includes a functionalized lignin proportion 110 of 3% by mass; a carbon-mineralizing proportion 120 of 86% by mass including a SiGS proportion of 81% by mass, an olivine proportion of 3% by mass, and a calcium oxide proportion of 2% by mass; and a porous siliceous material proportion 130 of 8% including diatomite.
  • the remaining 3% of example 11 of the road binder composition 100 consists of water.
  • UCS tests were conducted according to ASTM D2166/D2166M-16, standard test method for unconfined compressive strength of cohesive soils, adapted for granular material stabilized with binders.
  • granular 0/4 millimeter crushed rock sand was utilized as the aggregate material of the road composition 200.
  • FIGURE 5 shows the grading curve of the 0/4 millimeter crushed rock.
  • 9 5 grams of the road binder composition 100 were added per 100 grams of 0/4 millimeter crushed rock.
  • 26 grams of the road binder composition 100 were added per 100 grams of the 0/4 millimeter crushed rock.
  • 31 grams of the road binder composition 100 were added per 100 grams of the 0/4 millimeter crushed rock.
  • the UCS of each sample is highly dependent on the curing time of the sample.
  • All examples of the road composition 200 improved upon the untreated aggregate materials.
  • One sample of example 9 achieved a UCS of 3.27 newtons per square millimeter after 29 days of curing.
  • One sample of example 10 achieved a peak UCS of 2.34 newtons per square millimeter over 28 days of curing.
  • One sample of example 11 achieved a UCS of 2.52 newtons per square millimeter over 7 days of curing. Data on the performance of example 11 after more than 7 days of curing are not currently available. However, based on the strength development patterns of other examples, example 11 is projected to exhibit the greatest UCS among these samples.
  • instances of the road composition 200 can exhibit UCS in excess of 3.27 newtons per square millimeter.

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Abstract

L'invention concerne une composition de liant routier comprenant : une proportion de lignosulfonate comprise entre 5 % et 40 % en masse caractérisée par une masse moléculaire supérieure à 2,5 kilodaltons et inférieure à 125 kilodaltons ; une proportion de minéralisation du carbone comprise entre 10 % et 35 % en masse ; et une proportion de matériau siliceux poreux comprise entre 2 % et 15 % en masse.
PCT/US2024/056189 2023-11-15 2024-11-15 Composition de séquestration de dioxyde de carbone pour la liaison et la stabilisation de matériaux d'agrégat Pending WO2025106859A1 (fr)

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ROA202300687A RO138024A0 (ro) 2023-11-15 2023-11-15 Compoziţie care sechestrează bioxidul de carbon destinată utilizării ca agent de legare şi stabilizare a agregatelor din fundaţia drumurilor

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Citations (6)

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Publication number Priority date Publication date Assignee Title
WO1999019566A1 (fr) * 1997-10-13 1999-04-22 Italgrip S.R.L. Procede et composition permettant de rendre rugueux un revetement routier
US20020091177A1 (en) * 2000-10-25 2002-07-11 Coatex S.A.S. Method for improving the mechanical strength, particularly the strength "at the young ages" of cement matrices, and the cement matrices obtained thereby
US20120142518A1 (en) * 2006-07-06 2012-06-07 Vesuvius Crucible Company Cement-free refractory
WO2015087255A1 (fr) * 2013-12-11 2015-06-18 University Of Pretoria Composition de laitier à activation alcaline (aas) améliorée
US20190209989A1 (en) * 2016-09-08 2019-07-11 Total Marketing Services Method for manufacturing material in the form of granules that can be used as road binder or sealing binder and device for manufacturing same
RO138024A0 (ro) * 2023-11-15 2024-03-29 Carbon Crusher Compoziţie care sechestrează bioxidul de carbon destinată utilizării ca agent de legare şi stabilizare a agregatelor din fundaţia drumurilor

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WO1999019566A1 (fr) * 1997-10-13 1999-04-22 Italgrip S.R.L. Procede et composition permettant de rendre rugueux un revetement routier
US20020091177A1 (en) * 2000-10-25 2002-07-11 Coatex S.A.S. Method for improving the mechanical strength, particularly the strength "at the young ages" of cement matrices, and the cement matrices obtained thereby
US20120142518A1 (en) * 2006-07-06 2012-06-07 Vesuvius Crucible Company Cement-free refractory
WO2015087255A1 (fr) * 2013-12-11 2015-06-18 University Of Pretoria Composition de laitier à activation alcaline (aas) améliorée
US20190209989A1 (en) * 2016-09-08 2019-07-11 Total Marketing Services Method for manufacturing material in the form of granules that can be used as road binder or sealing binder and device for manufacturing same
RO138024A0 (ro) * 2023-11-15 2024-03-29 Carbon Crusher Compoziţie care sechestrează bioxidul de carbon destinată utilizării ca agent de legare şi stabilizare a agregatelor din fundaţia drumurilor

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CHEN Y.K.; SUN Y.; WANG K.Q.; KUANG W.Y.; YAN S.R.; WANG Z.H.; LEE H.S.: "Utilization of bio-waste eggshell powder as a potential filler material for cement: Analyses of zeta potential, hydration and sustainability", CONSTRUCTION & BUILDING MATERIALS, vol. 325, 14 February 2022 (2022-02-14), NL, XP086981442, ISSN: 0950-0618, DOI: 10.1016/j.conbuildmat.2021.126220 *

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