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SE451067B - Accelerating hardening of concrete - Google Patents

Accelerating hardening of concrete

Info

Publication number
SE451067B
SE451067B SE8002613A SE8002613A SE451067B SE 451067 B SE451067 B SE 451067B SE 8002613 A SE8002613 A SE 8002613A SE 8002613 A SE8002613 A SE 8002613A SE 451067 B SE451067 B SE 451067B
Authority
SE
Sweden
Prior art keywords
curing
concrete
carbonation
dewatering
carbon dioxide
Prior art date
Application number
SE8002613A
Other languages
Swedish (sv)
Other versions
SE8002613L (en
Inventor
Roman Malinowski
Original Assignee
Roman Malinowski
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roman Malinowski filed Critical Roman Malinowski
Priority to SE8002613A priority Critical patent/SE451067B/en
Priority to CA000375225A priority patent/CA1185078A/en
Publication of SE8002613L publication Critical patent/SE8002613L/en
Publication of SE451067B publication Critical patent/SE451067B/en

Links

Classifications

    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/02—Selection of the hardening environment
    • C04B40/0231—Carbon dioxide hardening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/245—Curing concrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/247—Controlling the humidity during curing, setting or hardening
    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0089—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability making use of vacuum or reduced pressure
    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/02—Selection of the hardening environment
    • C04B40/0254—Hardening in an enclosed space, e.g. in a flexible container
    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/02—Selection of the hardening environment
    • C04B40/0272—Hardening under vacuum or reduced pressure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
    • E04G21/061—Solidifying concrete, e.g. by application of vacuum before hardening by applying vacuum or vacuum combined with vibration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

Accelerating the curing of concrete or other similar cast material comprises dehumidifying and dewatering the material before and/or during the curing. The dehumidifying and dewatering arrangement is housed in a closed unit which is connected to the curing container. The arrangement has an air tight closed unit including a plant for air circulation, heat prod., and dewatering together with a unit for control equipment. This controls the environmental conditions in the curing container to give the quickest curing conditions for the particular cast structure. Used for rapid setting of concrete. (Provisional Basic previously notified Week E19)

Description

20 25 30 35 451 067 2 den yttre miljön och dels materialets porstruktur på mate- rialets uttorkning före och under karbonatiseringsproces- sen. 20 25 30 35 451 067 2 the external environment and partly the material's pore structure on the material's dehydration before and during the carbonation process.

Följande yttre faktorer påverkar uttorkningen av ma- terialet; dess temperatur, luftens rörelse, omgivningens temperatur och luftens relativa fuktighet samt eventuell koldioxidgas rörelse. Rätt avpassning av dessa faktorer möjliggör ett optimalt karbonatiseringsförfarande.The following external factors affect the drying of the material: its temperature, the movement of the air, the ambient temperature and relative humidity of the air and any movement of carbon dioxide gas. The correct adjustment of these factors enables an optimal carbonation process.

För materialet eftersträvas ett lågt vattenbindetal, lämpligt avpassat bindemedel (företrädesvis cement), lämp- lig porositet, vilket måste avvägas mot önskad hållfast- het, m m. För att få en snabb karbonatiseringsprocess måste också koldioxid lätt kunna absorberas av materialet.The material aims to have a low water-binding capacity, a suitably adapted binder (preferably cement), suitable porosity, which must be balanced against the desired strength, etc. In order to achieve a rapid carbonation process, carbon dioxide must also be easily absorbed by the material.

Uppfinningen avser således ett sätt att snabbhärda betong eller andra liknande gjutmaterial genom karbonati- sering. Sättet kännetecknas av att ett kapillärsystem ska- pas i materialet, att ett lufttätt, slutet system åstad- koms kring materialet, att materialet utsätts för under- tryck och att kapillärsystemet uttorkas före och under karbonatiseringen genom kontinuerlig avfuktning under styrda konditioner i det slutna systemet i form av luft- cirkulering i det slutna systemet och avfuktning av den cirkulerande luften, varvid materialets utsättande för' undertryck, karbonatiseringen och luftcirkuleringen alla sker i det lufttäta, slutna systemet.The invention thus relates to a method of rapidly hardening concrete or other similar casting materials by carbonation. The method is characterized in that a capillary system is created in the material, that an airtight, closed system is created around the material, that the material is exposed to negative pressure and that the capillary system is dried out before and during the carbonation by continuous dehumidification under controlled conditions in the closed system in the form of air circulation in the closed system and dehumidification of the circulating air, whereby the exposure of the material to negative pressure, the carbonation and the air circulation all take place in the airtight, closed system.

Andra sätt och utrustningar för att snabbhärda betongmaterial finns beskrivna i US-patenten 4 ll7 059, 4 117 060 samt 3 492 385.Other methods and equipment for rapid hardening concrete materials are described in U.S. Patents 4,117,059, 4,117,060, and 3,492,385.

I US-patentet 4 ll7 060 beskrivs ett sätt att snabbhärda betong, som har uttorkats genom relativ torr blandning, där vinyl och acetatdibutyl sampolymi- serat ingår, och utsätts för tryck i en form, varefter koldioxidgas tillförs blandningen genom formen. Effekten av detta sätt är beroende av den avvattning som delvis sker genom polymertillsatsen. Någon specifik lösning av avfuktningsproblemet visas icke. 10 15 20 25 30 35 451 067 3 US-patentet 4 117 059 bygger på samma idé som US-pa- tentet 4 117 060, men som härdningsutrymmen utnyttjas en öppen kammare för att åstadkomma en kontinuerlig tillverkning av betongprodukter eller liknande. Kol- dioxidgasen tillförs här i kammaren i stället för till formen enligt US-patentet 4 117 060.US Patent 4,117,060 describes a method of rapidly curing concrete, which has been dried by relatively dry mixing, in which vinyl and acetate dibutyl copolymer are included, and is subjected to pressure in a mold, after which carbon dioxide gas is supplied to the mixture through the mold. The effect of this method is dependent on the dewatering that partly occurs through the polymer addition. No specific solution to the dewatering problem is shown. 10 15 20 25 30 35 451,067 3 US Patent 4,117,059 is based on the same idea as US Patent 4,117,060, but an open chamber is used as the curing space to achieve continuous production of concrete products or the like. The carbon dioxide gas is supplied here in the chamber instead of to the mold according to US Patent 4,117,060.

I den redovisade processen påpekas att kammarens höjd i förhållande till produktens tjocklek är direkt avgörande för härdningens resultat. Dessutom framhålls, att de angivna polymererna är nödvändiga för att snabb- hårdning skall erhållas enligt det redovisade sättet och skiljer således väsentligt från föreliggande upp- finning.In the process described, it is pointed out that the height of the chamber in relation to the thickness of the product is directly decisive for the curing result. It is also emphasized that the polymers specified are necessary for rapid curing to be obtained according to the method described and thus differ significantly from the present invention.

I US-patentet 3 492 385 visas ett sätt att påskynda härdningen genom att betongelementen i sina formar förs vertikalt genom omväxlande kalla och varma zoner med en koldioxidanrikad atmosfär. Vid detta sätt finns inga lösningar för avvattnings- och avfuktningsprob- lematiken.US Patent 3,492,385 shows a method of accelerating hardening by passing the concrete elements in their molds vertically through alternating cold and hot zones with a carbon dioxide-enriched atmosphere. This method does not provide solutions to the dewatering and dehumidification problems.

Väsentligt för föreliggande uppfinning är således att de faktorer, som påverkar härdningsförloppet, kan regleras så att de verkar gemensamt eller var för'sig eller i olika kombinationer samtidigt eller förskjutna i tiden i förhållande till varandra samt anpassas till elementens form och struktur, så att optimala härdningsbetingelser uppnås.It is thus essential for the present invention that the factors which influence the curing process can be regulated so that they act jointly or separately or in different combinations simultaneously or staggered in time in relation to each other and are adapted to the shape and structure of the elements, so that optimal curing conditions are achieved.

En anordning för tillämpning av sättet innehåller erforderlig konditioneringsutrustning, dvs värmekälla, fläkt och avfuktare (t ex salt eller kondensanordning), regleringsanordning för konditioneringen samt vakuum- utrustning och utrustning för koldioxidtillförsel.A device for applying the method contains the necessary conditioning equipment, i.e. heat source, fan and dehumidifier (e.g. salt or condensation device), control device for the conditioning, as well as vacuum equipment and equipment for carbon dioxide supply.

Denna anordning kan anslutas till följande alternativa härdningsutrymmen: sluten form, paket av slutna formar, sluten kammare eller liknande härdningsutrymmen.This device can be connected to the following alternative curing spaces: closed mold, package of closed molds, closed chamber or similar curing spaces.

I en sluten form, bestående av en enstaka form, paket av formar vertikalt eller horisontellt samman- satta, kan man efter det att formen (formarna) fyllts 10 15 20 25 30 451 067 4 med gjutmaterialet, först avvattna massan med vakuumsug och samtidigt eller omedelbart efter vakuumbehandlingen införa koldioxid med bibehållande av ett visst under- tryck i massan. Efter koldioxidtillförseln tillförs värme medelst fläkt så att en sluten luftcirkulation uppstår för att möjliggöra avfuktning av den cirkule- rade luften genom salter eller kondens. Alternativt kan en viss mängd koldioxid även tillföras under värme- behandlingen.In a closed mold, consisting of a single mold, a package of molds vertically or horizontally assembled, after the mold(s) have been filled with the casting material, the mass can first be dewatered by vacuum suction and simultaneously or immediately after the vacuum treatment, carbon dioxide is introduced while maintaining a certain negative pressure in the mass. After the carbon dioxide is supplied, heat is supplied by means of a fan so that a closed air circulation occurs to enable the dehumidification of the circulated air by salts or condensation. Alternatively, a certain amount of carbon dioxide can also be supplied during the heat treatment.

Ett annat alternativ vid sluten form är att i ovannämnda förfarande införs koldioxid efter det att avvattning skett genom vakuumbehandling samtidigt med att värmefläkten och avfuktningen aktiveras.Another alternative in the closed form is that in the above-mentioned process, carbon dioxide is introduced after dewatering has taken place through vacuum treatment at the same time as the heating fan and dehumidification are activated.

I ett härdningssystem med sluten kammare införs i all- mänhet pressat och vattenfattigt. Sättet att tillämpa det formade materialet, med eller utan form, uppfinningen sker därvid företrädesvis genom att först uttorka och avfukta det införda materialet genom använ- dande av värmefläkt och avfuktningsutrustningen, var- efter materialet vakuumsugs. Vid bibchållet undertryck i kammaren införs därefter koldioxiden.In a closed chamber curing system, the material is generally introduced in a compressed and water-poor state. The method of applying the shaped material, with or without a mold, the invention is preferably carried out by first drying and dehumidifying the introduced material by using a heating fan and dehumidifying equipment, after which the material is vacuumed. With the negative pressure maintained in the chamber, the carbon dioxide is then introduced.

Av bifogade figur framgår hur uppfinningen kan komhincras med olika typer av härdningsutrymmen.The attached figure shows how the invention can be combined with different types of curing spaces.

Prov av sättet enligt uppfinningen har utförts på fasadsten av betong. Förutsättningar för proven och dess resultat blev följande: 1. Cement 1, sand 2,7, vct 0,31 vatten 0,3 utgångstemperatur 20 - 23°C vakuum undertryck 0,5 bar, 10 min C02-gas temperatur 24 - 34°C, tryck O,l bar ' avfuktning, varmluftscirkulation 24 - 3S°C härdningstid 42 min, densitet 2,1 hållfasthet medelvärde 30 MPa 2. Samma som ovan med tillsatsmedel hållfasthet 18,9 MPa (polymerer) 451 067 5 Materialförutsättningar samma som ovan under 1.Tests of the method according to the invention have been carried out on concrete facade bricks. The conditions for the tests and their results were as follows: 1. Cement 1, sand 2.7, vct 0.31 water 0.3 starting temperature 20 - 23°C vacuum negative pressure 0.5 bar, 10 min C02 gas temperature 24 - 34°C, pressure 0.1 bar ' dehumidification, hot air circulation 24 - 3S°C curing time 42 min, density 2.1 strength average value 30 MPa 2. Same as above with additives strength 18.9 MPa (polymers) 451 067 5 Material conditions same as above under 1.

Ej vakuum, koldioxidgas tryck 0,1 bar temperatur 23 - 32°C, avfuktning, varmluftscirkulation 24 - 34°C, härdningstid 34 min, densitet 2,1, håll- fasthet medelvärde 24,3 MPa.Non-vacuum, carbon dioxide gas pressure 0.1 bar, temperature 23 - 32°C, dehumidification, hot air circulation 24 - 34°C, curing time 34 min, density 2.1, average strength 24.3 MPa.

Samma som under 3 med tillsatsmedel (polymerer) hållfasthet 18,1 MPa.Same as under 3 with additives (polymers) strength 18.1 MPa.

Claims (2)

1. 0 15 451 067 PATENTKRAV n.) l. Sätt att snabbhärda betong eller andra liknande gjutmaterial genom karbonatisering, k ä n n e t e c k - n a t av att ett kapillärsystem skapas i materialet, att ett lufttätt, slutet system åstadkoms kring mate- rialet, att materialet utsätts för undertryck och att kapillärsystemet uttorkas före och under karbonatise- ringen genom kontinuerlig avfuktning under styrda konditioner i det slutna systemet i form av luftcir- kulering i det slutna systemet och avfuktning av den cirkulerande luften, varvid materialets utsättande för undertryck, karbonatiseringen och luftcirkuleringen alla sker i det lufttäta, slutna systemet. I1. 0 15 451 067 PATENT REQUIREMENTS n.) L. Method of fast-curing concrete or other similar casting materials by carbonation, characterized in that a capillary system is created in the material, that an airtight, closed system is created around the material, that the material subjected to negative pressure and that the capillary system is dried before and during the carbonation by continuous dehumidification under controlled conditions in the closed system in the form of air circulation in the closed system and dehumidification of the circulating air, the material being subjected to negative pressure, carbonation and air circulation all takes place in the airtight, closed system. IN 2. Sätt enligt krav l, k ä n n e t e c k n a t av att vid karbonatiseríngen införs koldioxidgas i kapillärsystemet från materialets utsida eller mate- rialets inre. V2. A method according to claim 1, characterized in that during the carbonation carbon dioxide gas is introduced into the capillary system from the outside of the material or the inside of the material. V
SE8002613A 1980-04-08 1980-04-08 Accelerating hardening of concrete SE451067B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8002613A SE451067B (en) 1980-04-08 1980-04-08 Accelerating hardening of concrete
CA000375225A CA1185078A (en) 1980-04-08 1981-04-10 Method and device for rapid hardening of concrete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8002613A SE451067B (en) 1980-04-08 1980-04-08 Accelerating hardening of concrete

Publications (2)

Publication Number Publication Date
SE8002613L SE8002613L (en) 1982-03-19
SE451067B true SE451067B (en) 1987-08-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
SE8002613A SE451067B (en) 1980-04-08 1980-04-08 Accelerating hardening of concrete

Country Status (2)

Country Link
CA (1) CA1185078A (en)
SE (1) SE451067B (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8845940B2 (en) 2012-10-25 2014-09-30 Carboncure Technologies Inc. Carbon dioxide treatment of concrete upstream from product mold
US9108883B2 (en) 2013-06-25 2015-08-18 Carboncure Technologies, Inc. Apparatus for carbonation of a cement mix
US9376345B2 (en) 2013-06-25 2016-06-28 Carboncure Technologies Inc. Methods for delivery of carbon dioxide to a flowable concrete mix
US9388072B2 (en) 2013-06-25 2016-07-12 Carboncure Technologies Inc. Methods and compositions for concrete production
US9738562B2 (en) 2013-06-25 2017-08-22 Carboncure Technologies Inc. Methods and compositions for concrete production
US9790131B2 (en) 2013-02-04 2017-10-17 Carboncure Technologies Inc. System and method of applying carbon dioxide during the production of concrete
US10350787B2 (en) 2014-02-18 2019-07-16 Carboncure Technologies Inc. Carbonation of cement mixes
US10570064B2 (en) 2014-04-07 2020-02-25 Carboncure Technologies Inc. Integrated carbon dioxide capture
US10927042B2 (en) 2013-06-25 2021-02-23 Carboncure Technologies, Inc. Methods and compositions for concrete production
US11660779B2 (en) 2016-04-11 2023-05-30 Carboncure Technologies Inc. Methods and compositions for treatment of concrete wash water
US11958212B2 (en) 2017-06-20 2024-04-16 Carboncure Technologies Inc. Methods and compositions for treatment of concrete wash water
US12421169B2 (en) 2019-04-26 2025-09-23 Carboncure Technologies Inc. Carbonation of concrete aggregates
US12508738B2 (en) 2023-07-28 2025-12-30 Carboncure Technologies Inc. Methods and compositions for treatment of concrete wash water

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9492945B2 (en) 2012-10-25 2016-11-15 Carboncure Technologies Inc. Carbon dioxide treatment of concrete upstream from product mold
US10654191B2 (en) 2012-10-25 2020-05-19 Carboncure Technologies Inc. Carbon dioxide treatment of concrete upstream from product mold
US8845940B2 (en) 2012-10-25 2014-09-30 Carboncure Technologies Inc. Carbon dioxide treatment of concrete upstream from product mold
US10683237B2 (en) 2013-02-04 2020-06-16 Carboncure Technologies Inc. System and method of applying carbon dioxide during the production of concrete
US9790131B2 (en) 2013-02-04 2017-10-17 Carboncure Technologies Inc. System and method of applying carbon dioxide during the production of concrete
US9738562B2 (en) 2013-06-25 2017-08-22 Carboncure Technologies Inc. Methods and compositions for concrete production
US12319628B2 (en) 2013-06-25 2025-06-03 Carboncure Technologies Inc. Methods and compositions for concrete production
US9758437B2 (en) 2013-06-25 2017-09-12 Carboncure Technologies Inc. Apparatus for delivery of carbon dioxide to a concrete mix in a mixer and determining flow rate
US9388072B2 (en) 2013-06-25 2016-07-12 Carboncure Technologies Inc. Methods and compositions for concrete production
US10246379B2 (en) 2013-06-25 2019-04-02 Carboncure Technologies Inc. Methods and compositions for concrete production
US9463580B2 (en) 2013-06-25 2016-10-11 Carboncure Technologies Inc. Methods for carbonation of a cement mix in a mixer
US12319626B2 (en) 2013-06-25 2025-06-03 Carboncure Technologies Inc. Apparatus for delivery of carbon dioxide to a concrete mix in a mixer and determining flow rate
US9376345B2 (en) 2013-06-25 2016-06-28 Carboncure Technologies Inc. Methods for delivery of carbon dioxide to a flowable concrete mix
US9108883B2 (en) 2013-06-25 2015-08-18 Carboncure Technologies, Inc. Apparatus for carbonation of a cement mix
US10927042B2 (en) 2013-06-25 2021-02-23 Carboncure Technologies, Inc. Methods and compositions for concrete production
US11773019B2 (en) 2013-06-25 2023-10-03 Carboncure Technologies Inc. Methods and compositions for concrete production
US11773031B2 (en) 2013-06-25 2023-10-03 Carboncure Technologies Inc. Apparatus for delivery of a predetermined amount of solid and gaseous carbon dioxide
US10350787B2 (en) 2014-02-18 2019-07-16 Carboncure Technologies Inc. Carbonation of cement mixes
US11878948B2 (en) 2014-04-07 2024-01-23 Carboncure Technologies Inc. Integrated carbon dioxide capture
US10570064B2 (en) 2014-04-07 2020-02-25 Carboncure Technologies Inc. Integrated carbon dioxide capture
US12325669B2 (en) 2014-04-07 2025-06-10 Carboncure Technologies Inc. Integrated carbon dioxide capture
US11660779B2 (en) 2016-04-11 2023-05-30 Carboncure Technologies Inc. Methods and compositions for treatment of concrete wash water
US12330336B2 (en) 2016-04-11 2025-06-17 Carboncure Technologies Inc. Methods and compositions for treatment of concrete wash water
US11958212B2 (en) 2017-06-20 2024-04-16 Carboncure Technologies Inc. Methods and compositions for treatment of concrete wash water
US12421169B2 (en) 2019-04-26 2025-09-23 Carboncure Technologies Inc. Carbonation of concrete aggregates
US12497329B2 (en) 2019-04-26 2025-12-16 Carboncure Technologies Inc. Carbonation of concrete aggregates
US12508738B2 (en) 2023-07-28 2025-12-30 Carboncure Technologies Inc. Methods and compositions for treatment of concrete wash water

Also Published As

Publication number Publication date
SE8002613L (en) 1982-03-19
CA1185078A (en) 1985-04-09

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