GB2368338A - Epoxy resin coatings for hydraulic mortars - Google Patents
Epoxy resin coatings for hydraulic mortars Download PDFInfo
- Publication number
- GB2368338A GB2368338A GB0026421A GB0026421A GB2368338A GB 2368338 A GB2368338 A GB 2368338A GB 0026421 A GB0026421 A GB 0026421A GB 0026421 A GB0026421 A GB 0026421A GB 2368338 A GB2368338 A GB 2368338A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coating
- hydraulic mortar
- epoxy resin
- concrete
- surface treatment
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 72
- 239000011429 hydraulic mortar Substances 0.000 title claims abstract description 36
- 239000003822 epoxy resin Substances 0.000 title claims abstract description 15
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 69
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000004381 surface treatment Methods 0.000 claims abstract description 14
- 239000000654 additive Substances 0.000 claims abstract description 8
- 239000003973 paint Substances 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 7
- 239000010433 feldspar Substances 0.000 claims abstract description 6
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000004567 concrete Substances 0.000 claims description 45
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000004842 bisphenol F epoxy resin Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 229940043265 methyl isobutyl ketone Drugs 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 239000000049 pigment Substances 0.000 description 4
- 239000011505 plaster Substances 0.000 description 4
- 239000013008 thixotropic agent Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000012764 mineral filler Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- NFGXHKASABOEEW-UHFFFAOYSA-N 1-methylethyl 11-methoxy-3,7,11-trimethyl-2,4-dodecadienoate Chemical compound COC(C)(C)CCCC(C)CC=CC(C)=CC(=O)OC(C)C NFGXHKASABOEEW-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229920004482 WACKER® Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- KFUSXMDYOPXKKT-VIFPVBQESA-N (2s)-2-[(2-methylphenoxy)methyl]oxirane Chemical compound CC1=CC=CC=C1OC[C@H]1OC1 KFUSXMDYOPXKKT-VIFPVBQESA-N 0.000 description 1
- BBBUAWSVILPJLL-UHFFFAOYSA-N 2-(2-ethylhexoxymethyl)oxirane Chemical compound CCCCC(CC)COCC1CO1 BBBUAWSVILPJLL-UHFFFAOYSA-N 0.000 description 1
- SHKUUQIDMUMQQK-UHFFFAOYSA-N 2-[4-(oxiran-2-ylmethoxy)butoxymethyl]oxirane Chemical compound C1OC1COCCCCOCC1CO1 SHKUUQIDMUMQQK-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000013032 Hydrocarbon resin Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 229920006270 hydrocarbon resin Polymers 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000001034 iron oxide pigment Substances 0.000 description 1
- DMKSVUSAATWOCU-HROMYWEYSA-N loteprednol etabonate Chemical compound C1CC2=CC(=O)C=C[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@@](C(=O)OCCl)(OC(=O)OCC)[C@@]1(C)C[C@@H]2O DMKSVUSAATWOCU-HROMYWEYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229940032007 methylethyl ketone Drugs 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 239000010421 standard material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/48—Macromolecular compounds
- C04B41/483—Polyacrylates
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/62—Coating or impregnation with organic materials
- C04B41/63—Macromolecular compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
A coating for the surface treatment of a hydraulic mortar includes an epoxy resin and a hardening agent. The treatment of the hydraulic mortar comprises applying the coating to the surface of the hydraulic mortar, the method of application generally being determined by the prevailing condition of the surface of the hydraulic mortar. The hardening agent may be an amidoamine adduct. The composition may also contain a Filler, e.g. Feldspar, and paint additives and/or methyl isobutyl ketone.
Description
HYDRAULIC MORTAR TREATMENT
This invention relates to a method for the treatment of hydraulic mortar, in particular concrete, and to a product for use in said method.
It is well known that a substantial portion of the time involved in laying concrete, for example concrete floors, is required to allow the concrete to dry and set, or cure. No further work can be done, for example, applying a surface finish such as paint or plaster to the surface of the concrete until the concrete has cured.
The concrete while curing also dries at an uneven rate ; the surface of the concrete drying more quickly than the rest of the body of concrete. This creates a surface that is brittle which invariably flakes producing concrete dust, a condition commonly experienced in the trade. This problem is greatly aggravated where hot dry conditions prevail.
To reduce the formation of a brittle concrete surface it is known to cover the surface of freshly laid concrete with a polyethylene plastic sheet.
Alternatively or in addition, water can be applied to the surface of the concrete where necessary, for example, where the surrounding air is particularly hot and dry. This method however has not been found to be very effective and is cumbersome and time consuming.
It is also known to spray material onto the surface of the concrete which helps to maintain the moisture level. However, these materials do not form a permanent coating on the surface of the concrete and flake off over time.
The drying of the surface of concrete and the resulting brittleness that ensues is also experienced with old concrete which has been set for some time.
This invention is directed to overcoming at least some of the above mentioned problems.
According to the invention, there is provided a coating for the surface treatment of a hydraulic mortar comprising; an epoxy resin; and a hardening agent.
Typically, the hydraulic mortar comprises concrete.
Preferably, the epoxy resin is bis-phenol A epoxy resin. Optionally, the epoxy resin can be bis-phenol
F epoxy resin or a mixture of bis-phenol A epoxy resin and bis-phenol F epoxy resin.
Preferably, the hardening agent is an amidoamine adduct.
Typically, the coating comprises the epoxy resin in the range 25%-67% by weight. Preferably, the coating comprises bis A epoxy resin and the amidoamine adduct in the ratio of 4: 1 by weight.
Preferably, the coating includes a filler, for example, feldspar. Typically, the coating comprises filler in the range of 0-50% by weight.
Optionally, the coating may include additives, for example, standard paint additives and methyl-isobutyl-ketone (M. I. B. K.).
In another aspect of the present invention there is provided a method for the treatment of hydraulic mortar comprising applying a coating as hereinbefore defined to the surface of the hydraulic mortar.
The method of application is generally determined by the prevailing condition of the surface of the hydraulic mortar.
For example, the coating may be applied by brush or roller where the surface of the hydraulic mortar such as concrete has set sufficiently to resist the mechanical stresses which would be subjected thereto by this application method.
The coating may also be trowelled into the surface of the concrete while wet. Alternatively, the coating may be applied by spraying. Application of the coating by spraying may be applied at any stage during or after the curing of the concrete.
Advantageously, the coating mixes easily with the concrete even though the coating itself is immiscible in water. As the coating and concrete substrate cure, they bond together so that the coating provides a permanent surface layer on the concrete.
The coating being immiscible in water displaces the moisture at the surface of the fresh concrete effectively sealing in the moisture under the coating. The coating thus prevents the evaporation
of moisture from the surface of the concrete allowing the concrete to cure without forming a dry brittle surface even in extremely hot and dry conditions.
Once the coating has dried it forms an extremely hard, durable and permanent surface.
An advantage of the present invention is that it eliminates the lengthy drying period required to cure concrete. It also prevents the formation of a brittle concrete surface which would otherwise flake creating a substantial amount of dust thus eliminating the surface preparation of the concrete required for the application of more conventional coatings such as paint or plaster.
In the case where the coating is applied to the surface of old concrete which has set for some time, the method for the treatment of the concrete surface preferably includes the step of preparing the surface of the concrete.
Preparing the surface of the concrete comprises removing surface contaminates such as dirt and grease.
Generally, the surface of the concrete should be prepared in a similar fashion to most other surfaces to which it is desired to apply a surface coating.
Embodiments of the invention will now be described having regard to the following non-limiting examples
in which typical formulae of the coating as shown below in Tables 1 and 3 are employed. Table 1
Ingredient Percentage by weight bis-phenol A epoxy resin 50% Amidoamine adduct 25% Feldspar filler 10% M. I. B. K. 10% Paint additives 5% In this example, the samples are prepared from portland cement placed in a metal tray 25mm deep and cured at 500C for 90 minutes. To half of these samples a single coating of the invention is applied to their surfaces by brush. All samples were then weighed at five intervals over a 24 hour period and the rate of the surface moisture evaporation was determined. Table 2 below shows how effective the coating is in preventing moisture loss from the surface of the concrete.
Table 2
Surface 1 hour 2 hours 4 hours 8 hours 24 hours evaporation (mg/cm2) Uncoated 60 200 267 300 340 sample Coated sample 3. 233. 54. 26. 19. 15 As can be seen, taken over a 24 hour period, the rate of evaporation from the surface of the concrete to
which a single coating of the present invention has been applied is approximately 40 times less than that to which no coating has been applied.
In addition to bis-phenol A epoxy resin, mixtures of bis-phenol F epoxy resin and bis-phenol A epoxy resin can also be used. Epoxy novolac and other such speciality resins could be used but they would be uneconomic except for special applications. Reactive diluents can be included to reduce the viscosity of the paint to make it easier to apply in cold conditions. Examples of suitable reactive diluents are, C13/Cis-alkyl glycidyl ether, C12/Cl4-alkyl glycidyl ether, o-cresyl glycidyl ether, 2-ethyl hexyl glycidyl ether 1,4 butane diglycidyl ether, 1,6 hexane diglycidyl ether.
The ratio of the hardening agent to the epoxy resin is governed by the epoxy equivalent weight of the resin and the hydrogen equivalent weight of the hardening agent. The reaction is stochimetric and each epoxy molecule must react with one hydrogen atom of an amine group. The ratio is adjusted within limits to a convenient figure by adjusting the amounts of non-reactive material in the coating.
Table 3 below illustrates a further typical formula which may be used for the coating of the invention and the function of each component will be, described in turn.
Table 3
GRAMMES SG VOLUME Ingredients % Epoxy resin EPA 7,460.00 1.15 6.49 38.15 Standard epoxy resin Novarss LA300 740. 00 1. 1 0.67 3.78 phenolic / hydrocarbon waterprofing res Silica Wacker N20 140.00 1 0.14 0.72 Thixotropic agent Byk 605R 42.00 1 0.04 0.21 Thixotoronic co-agent BYK, A530 43.00 1 0.04 0.22 Air release agent BYK OK 164.00 1 0.16 0.84 Leveiline agent Silane 99.00 0.799 0.11 0.46 Adhesion plonober MIBK 820.00 0.8 1.03 4.19 Cure inhibitor Pigment White 600.00 4. 05 0.15 3.07 Titanium dioxide pigment Pigment Red 100.00 2.7 0.04 0.51 Iron oxide pigment Minex S20 5,500.00 2.5 2.20 28. 13 Feldspar filer 2.5 0.00 0.00 Fitter50. 00O. C3 Solvent Polyguard 0.8 0.00 0.00 0.00 Totals 15,699,00 1.42 11.07 Hardener 3,854,33 1 3,85433333 19.71 System totals 19,553.33 1.31 14.93 100.00 The coating of this embodiment includes 4.19% of
M. I. B. K. which acts as an inhibitor to prolong the pot life of the coating. The M. I. B. K. associates with the amine in the hardening agent thus slowing cure. Once the coating is applied to the concrete the M. I. B. K. evaporates allowing the concrete and hardening agent to cure normally. Other ketones such as acetone or methyl-ethyl-ketone (M. E. K. ) can be used but only for spray application or in cold conditions because they evaporate very quickly. At less than 5% by weight of the coating the ketone is regarded as an additive and not a solvent because it is insufficient to significantly reduce the viscosity of the coating.
The Novares LA300 is a hydrocarbon resin containing phenolic groups and has the advantage of increasing
the resistance of the coating and promoting full cure.
The Wacker silica and the BYK 605R are synergetic thixotropic agents which increase the viscosity of the coating while it is at rest while allowing the viscosity to fall during application. This attribute makes the coating easy to apply but prevents it running off vertical surfaces. Other thixotropic agents such as bentonite clay can also be used.
Thixotropic agents are useful components when the coating is to be used, for example, on vertical surfaces or ceilings.
The BYK A530 is an air release agent which induces air bubbles that may be trapped in the coating to coalesce and rise to the surface where they can escape. There are many other air release agents which could be used in the coating. These agents are usually organic polymers such as polyethers and polyacrylics or polydimethylsiloxanes. Examples are the Airex 900 series. Other BYK Chemie air release agents that could be used are BYK A525 and BYK 555.
BYK OK is a flow and levelling agent. It reduces the surface tension of the coating and allows it to flow into a smooth film without the orange peel effect which can otherwise occur. Flow and levelling agents may not be necessary in the coating because the texture of concrete will usually prevent a smooth gloss finish being achieved.
Flow and levelling agents are chemically similar to air release agents and many types are available.
Silane is an adhesion promoter. It is an organic molecule which has two types of reactive chemical groups and works by reacting with the bis-phenol A epoxy resin or hardening agent and the oxygen molecules on the surface of inorganic materials such as mineral fillers, sand, glass and metals. The formula uses an epoxy functional silane but amino, mercapto or chloro functional silanes could also be used.
The pigments are industry standard materials.
Minex S20 is finely ground feldspar mineral filler.
It has the advantage of being unreactive to dilute acids and does not significantly increase the viscosity of the coating. Many other finely ground mineral fillers could be used such as talc, wollastonite, mica, slate powder, calcium carbonate and chalk.
It is known that even where concrete has cured in the normal fashion, moisture will continue to evaporate from its surface to a certain degree. This can cause the surface to become brittle over time. The application of the coating of the present invention prevents or greatly reduces this type of evaporation helping to maintain the integrity of the surface of the concrete and to prevent flaking.
Further advantages of the present invention include the simplicity of the method of applying the coating to the surface of the concrete. It has also been noted that the resulting cured surface of the concrete provides superior adhesion for the application of conventional coatings, such as paint or plaster.
It will be appreciated that the coating and method of the present invention may also be applied to other similar construction materials for example, plaster, bonding, mortar or grouting.
The embodiments are not limited as hereinbefore described but may be varied within the scope of the invention.
Claims (19)
1. A coating for the surface treatment of a hydraulic mortar comprising: an epoxy resin; and a hardening agent.
2. A coating for the surface treatment of a hydraulic mortar as claimed in claim 1, wherein the epoxy resin is bis-phenol A epoxy resin.
3. A coating for the surface treatment of a hydraulic mortar as claimed in claim 1, wherein the epoxy resin is a mixture of bis-phenol A epoxy resin and of bis-phenol F epoxy resin.
4. A coating for the surface treatment of a hydraulic mortar as claimed in any preceding claim, comprising the epoxy resin in the amount of from 20-70% by weight of the coating.
5. A coating for the surface treatment of a hydraulic mortar as claimed in any preceding claim, wherein the hardening agent is an amidoamine adduct.
6. A coating for the surface treatment of a hydraulic mortar as claimed in any preceding claim, wherein the coating comprises an epoxy
resin and hardening agent in the ratio of 4 : 1 by weight.
7. A coating for the surface treatment of a hydraulic mortar as claimed in any preceding claim, wherein the coating includes a filler material.
8. A coating for the surface treatment of a hydraulic mortar as claimed in claim 7, wherein the filler material is feldspar.
9. A coating for the surface treatment of a hydraulic mortar as claimed in claims 7 or 8, comprising the filler material in the amount of up to 50% by weight.
10. A coating for the surface treatment of a hydraulic mortar as claimed in any preceding claim, wherein the coating includes additives.
11. A coating for the surface treatment of a hydraulic mortar as claimed in claim 10, wherein the additives comprise standard paint additives and/or methyl-iso-butyl-ketone (M. I. B. K.).
12. A method for the treatment of a hydraulic mortar comprising applying a coating as claimed in any of claims 1 to 11 to the surface of the hydraulic mortar.
13. A method for the treatment of a hydraulic mortar as claimed in claim 12, wherein the coating is applied by brush.
14. A method for the treatment of a hydraulic mortar as claimed in claim 12, wherein the coating is applied by spraying.
15. A method for the treatment of a hydraulic mortar as claimed in any of claims 12 to 14 comprising the steps of preparing the surface of the hydraulic mortar and applying the coating to the prepared surface of the hydraulic mortar.
16. A hydraulic mortar comprising a coating as claimed in any of claims 1 to 11.
17. A hydraulic mortar as claimed in claim 16 characterised in that the hydraulic mortar comprises concrete.
18. A coating for the surface treatment of a hydraulic mortar substantially as hereinbefore described with reference to the examples.
19. A method for the treatment of a hydraulic mortar substantially as hereinbefore described with reference to the examples.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0026421A GB2368338A (en) | 2000-10-28 | 2000-10-28 | Epoxy resin coatings for hydraulic mortars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0026421A GB2368338A (en) | 2000-10-28 | 2000-10-28 | Epoxy resin coatings for hydraulic mortars |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0026421D0 GB0026421D0 (en) | 2000-12-13 |
| GB2368338A true GB2368338A (en) | 2002-05-01 |
Family
ID=9902145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0026421A Withdrawn GB2368338A (en) | 2000-10-28 | 2000-10-28 | Epoxy resin coatings for hydraulic mortars |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2368338A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11426762B2 (en) | 2015-12-31 | 2022-08-30 | Henkel Ag & Co. Kgaa | Low bake autodeposition coatings |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB951953A (en) * | 1960-02-19 | 1964-03-11 | Gen Mills Inc | Resinous coating compositions |
| GB1031543A (en) * | 1963-06-20 | 1966-06-02 | Shell Int Research | Process for curing polyepoxides and resulting products |
| GB1055504A (en) * | 1964-03-11 | 1967-01-18 | Gen Mills Inc | Epoxy resin compositions |
| GB1110115A (en) * | 1964-05-07 | 1968-04-18 | Chem Building Prod | Improvements in or relating to building materials |
| GB1122996A (en) * | 1964-10-01 | 1968-08-07 | Kyowa Hakko Kogyo Kk | The curing of epoxy resins |
| GB2056458A (en) * | 1978-08-18 | 1981-03-18 | Britflex Resin Syst Ltd | Epoxy resin compositions for use in seal coats |
| GB2105218A (en) * | 1981-07-13 | 1983-03-23 | Dittmers Ludwig Gmbh | Process for applying reaction-hardening two-component or multicomponent coating materials to underwater surfaces |
| EP0430276A2 (en) * | 1989-12-01 | 1991-06-05 | Mitsui Petrochemical Industries, Ltd. | Two-component epoxy resin compositions |
| EP1048682A2 (en) * | 1999-04-28 | 2000-11-02 | Mitsui Chemicals, Inc. | Thermosetting resin composition for prestressed concrete tendon, its use and prestressed concrete tendon using the composition |
-
2000
- 2000-10-28 GB GB0026421A patent/GB2368338A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB951953A (en) * | 1960-02-19 | 1964-03-11 | Gen Mills Inc | Resinous coating compositions |
| GB1031543A (en) * | 1963-06-20 | 1966-06-02 | Shell Int Research | Process for curing polyepoxides and resulting products |
| GB1055504A (en) * | 1964-03-11 | 1967-01-18 | Gen Mills Inc | Epoxy resin compositions |
| GB1110115A (en) * | 1964-05-07 | 1968-04-18 | Chem Building Prod | Improvements in or relating to building materials |
| GB1122996A (en) * | 1964-10-01 | 1968-08-07 | Kyowa Hakko Kogyo Kk | The curing of epoxy resins |
| GB2056458A (en) * | 1978-08-18 | 1981-03-18 | Britflex Resin Syst Ltd | Epoxy resin compositions for use in seal coats |
| US4296167A (en) * | 1978-08-18 | 1981-10-20 | Ceintrey M | Compositions for use in seal coats |
| GB2105218A (en) * | 1981-07-13 | 1983-03-23 | Dittmers Ludwig Gmbh | Process for applying reaction-hardening two-component or multicomponent coating materials to underwater surfaces |
| EP0430276A2 (en) * | 1989-12-01 | 1991-06-05 | Mitsui Petrochemical Industries, Ltd. | Two-component epoxy resin compositions |
| EP1048682A2 (en) * | 1999-04-28 | 2000-11-02 | Mitsui Chemicals, Inc. | Thermosetting resin composition for prestressed concrete tendon, its use and prestressed concrete tendon using the composition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11426762B2 (en) | 2015-12-31 | 2022-08-30 | Henkel Ag & Co. Kgaa | Low bake autodeposition coatings |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0026421D0 (en) | 2000-12-13 |
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| Date | Code | Title | Description |
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| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |