GB2152921A - Cement-based adhesive compositions - Google Patents
Cement-based adhesive compositions Download PDFInfo
- Publication number
- GB2152921A GB2152921A GB08401773A GB8401773A GB2152921A GB 2152921 A GB2152921 A GB 2152921A GB 08401773 A GB08401773 A GB 08401773A GB 8401773 A GB8401773 A GB 8401773A GB 2152921 A GB2152921 A GB 2152921A
- Authority
- GB
- United Kingdom
- Prior art keywords
- composition
- cement
- weight
- pointing
- mortar
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 46
- 239000000853 adhesive Substances 0.000 title claims abstract description 20
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 20
- 239000004568 cement Substances 0.000 title claims abstract description 13
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 24
- 230000008961 swelling Effects 0.000 claims abstract description 12
- 239000004927 clay Substances 0.000 claims abstract description 11
- 229920002689 polyvinyl acetate Polymers 0.000 claims abstract description 11
- 239000011118 polyvinyl acetate Substances 0.000 claims abstract description 10
- 239000011396 hydraulic cement Substances 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 6
- 239000004576 sand Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000011398 Portland cement Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims description 4
- 229940080314 sodium bentonite Drugs 0.000 claims description 4
- 229910000280 sodium bentonite Inorganic materials 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical group O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- 239000004575 stone Substances 0.000 abstract description 5
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 235000019581 fat taste sensations Nutrition 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 235000012216 bentonite Nutrition 0.000 description 2
- 239000000834 fixative Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 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
- 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
- C04B28/04—Portland cements
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A cement-based adhesive and pointing mortar composition in dry mix form, comprises a hydraulic cement (15-50 wt%), an aggregate, (50-80 wt%) polyvinyl acetate powder (1-5 wt%) and a high swelling clay in an amount of from 1 to 10% by weight of the composition. The composition is suitable for fixing tiles such as stone facings and brickslips to surfaces such as walls and floors and as a pointing mortar for pointing the tile joints.
Description
SPECIFICATION
Improvements in cement based adhesive compositions
This invention relates to a cement based adhesive composition which can be used as a fixative for fixing tiles such as stone facing tiles and brickslips to a variety of surfaces. In particular the invention relates to such a composition which can be used as a fixative as aforesaid and as a pointing mortar.
Bedding mortars comprising a mixture of sand, portland cement and water prepared on site can be used to fix tiles such as stone facings and brickslips. The mixture is applied to the back of the tile as a thick layer approximately 6 mm thick after thoroughly soaking the tile and the surface to which it is to be fixed. Polyvinyl acetate liquid emulsion may be added to the bedding mortar to improve the working characteristics of the mortar and increase the adhesion of the tiles to the surface. Proprietory tile adhesives known as hydraulically hardening mortars and consisting of a dry factory prepared mixture of portland cement, sand and an organic additive such as polyvinyl acetate powder and a cellulose derivative, for example, methyl cellulose, methyl hydroxyethyl cellulose or hydroxyethyl cellulose.The cellulose derivatives prevent dewatering of the mortar when in contact with dry tiles or surfaces, and control the hydration of the cement.
Once the tiles are in place, a pointing mortar is then separately prepared and applied across the tile joints.
The pointing mortar generally consist of a mixture of four parts sand to one part cement, although this ratio may be varied. The sand will usually contain a natural amount of a clay-like or silty material which gives the pointing mortar its plasticity or "fattiness" characteristic so as to provide for a satisfactory filling of the joints between the tiles.
The conventional and proprietary beding mortars and tile adhesives described above are unsuitable for use as pointing mortars as they lack this requisite plasticity or "fattiness" characteristic. Furthermore, the combination of polyvinyl acetate and the cellulose derivative in the proprietary adhesives would tend to cause staining of the face of the tiles after drying and hardening of the mortar and the stains would be very difficult to remove, if these adhesives were to be used for pointing.
According to one aspect of the present invention there is provided a cement-based adhesive and pointing mortar composition in dry mix form, comprising a hydraulic cement, an aggregate, polyvinyl acetate powder and a high swelling clay in an amount of from 1 to 10% by weight of the composition.
According to another aspect of the present invention there is provided a cement-based adhesive and pointing mortar, comprising the dry mix composition described above, mixed with a sufficient amount of water to produce a workable material.
The combined adhesive and pointing mortar of the invention can be used both for fixing tiles such as stone facings and brickslips to surfaces such as walls and floors and as a pointing mortar for pointing the tile joints.
Thus, it is not necessary for a separate pointing mortar to be applied to the tiles after bedding; the bedding and pointing may be carried out in one operation.
The polyvinyl acetate improves the adhesion of the tiles to the surface, while the high swelling clay prevents loss of water by absorbtion into the tiles or the surface. The high swelling clay also serves to increase the plasticity and fattiness of the adhesive by acting as a gelling agent. Thus, on fixing tiles to a surface using the adhesive, the adhesive is squeezed out between the tile joints as a gel which can then be smoothed with a trowel to provide pointed joints.
Suitable high swelling clays include high swelling sodium bentonites. A particularly preferred clay is
Volclay sodium bentonite commercially available from the American Colloid Company which consists predominantly of montmorillonite. Other swelling sodium bentonites may be used, e.g. Fulbent types, although it has been found that with such clays the water content of the composition becomes more critical.
If non-swelling or low swelling clays are used, tile slip resistance is poor and the pot life of the adhesive is severely reduced.
The hydraulic cement component of the composition may be selected from any suitable conventional cement such as white or grey portland cement and aluminous cement, but is preferably portland cement.
This component is preferably present at 15 to 50% by weight of the composition.
The aggregate material again can be any suitable conventional material, such as sand or perlite, but is desirably sand of a preferred grain size range of 0.15 to 5.0 mm. The aggregate component is preferably present at 50 to 80% by weight of the composition.
The composition preferably comprises fom 1 to 5% by weight polyvinyl acetate.
Suitable polyvinyl acetates include redispersible spray dried vinyl acetate-ethylene copolymers and vinyl acetate-vinyl versanate copolymers, e.g. Vinapol V1080 and Vinapol 1070 commercially available from Vinyl
Products Ltd.
To produce a workable material, the dry mix composition must generally be mixed with water at a ratio of one part water to 3.5 to 10 parts by weight of dry mix.
The invention will now be illustrated by the following Example.
Example
% by weight
white or grey portland cement 23
sand 69
polyvinyl acetate powder 3
sodium bentonite clay 5
The above dry mix composition can be mixed with water to form a combined tile adhesive and pointing mortar which can be used to fix stone facing tiles or brickslips to a surface and point the tiles in one operation.
Claims (12)
1. A cement-based adhesive and pointing mortar composition in dry mix form, comprising a hydraulic cement, an aggretate, polyvinyl acetate powder and a high swelling clay in an amount of from 1 to 10% by weight of the composition.
2. A composition as claimed in Claim 1, in which the hydraulic cement comprises portland cement.
3. A compositon as claimed in Claim 1 or Claim 2, in which the hydraulic cement is present at 15 to 50% by weight of the composition.
4. A composition as claimed in any preceding claim, in which the aggregate comprises sand.
5. A composition as claimed in Claim 4, in which the sand has a grain size of 0.15 to 5.0 mm.
6. A composition as claimed in any preceding claim, in which the aggregate is present at 50 to 80% by weight of the composition.
7. A composition as claimed in any preceding claim, in which the polyvinyl acetate powder is present at from 1 to 5% by weight of the composition.
8. A composition as claimed in any preceding claim, in which the high swelling clay is a sodium bentonite clay.
9. A composition as claimed in Claim 8, in which the high swelling clay is Volclay sodium bentonite clay.
10. A cement-based adhesive and pointing mortar composition in dry mix form, substantially as herein described with reference to the Example.
11. A cement-based adhesive and pointing mortar, comprising the dry mix composition of any one of
Claims 1 to 10, mixed with a sufficient amount of water to produce a workable material.
12. An adhesive and mortar as claimed in Claim 11, in which one part by weight of water is mixed with from 3.5 to 10 parts by weight of dry mix composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08401773A GB2152921B (en) | 1984-01-24 | 1984-01-24 | Cement-based adhesive compositions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08401773A GB2152921B (en) | 1984-01-24 | 1984-01-24 | Cement-based adhesive compositions |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8401773D0 GB8401773D0 (en) | 1984-02-29 |
| GB2152921A true GB2152921A (en) | 1985-08-14 |
| GB2152921B GB2152921B (en) | 1987-03-25 |
Family
ID=10555422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08401773A Expired GB2152921B (en) | 1984-01-24 | 1984-01-24 | Cement-based adhesive compositions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2152921B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2263696A (en) * | 1989-09-22 | 1993-08-04 | British Gas Plc | Sealant |
| FR2705663A1 (en) * | 1993-05-28 | 1994-12-02 | Aenpc | Sand concrete of high tensile strength and articles, especially thin plates intended for the building industry, made of such a sand concrete and process for the manufacture of these articles |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112759312A (en) * | 2021-02-10 | 2021-05-07 | 王忠良 | Joint mixture for ceramic tiles and preparation method thereof |
-
1984
- 1984-01-24 GB GB08401773A patent/GB2152921B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2263696A (en) * | 1989-09-22 | 1993-08-04 | British Gas Plc | Sealant |
| GB2263696B (en) * | 1989-09-22 | 1994-05-11 | British Gas Plc | Sealant |
| FR2705663A1 (en) * | 1993-05-28 | 1994-12-02 | Aenpc | Sand concrete of high tensile strength and articles, especially thin plates intended for the building industry, made of such a sand concrete and process for the manufacture of these articles |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8401773D0 (en) | 1984-02-29 |
| GB2152921B (en) | 1987-03-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20010124 |