CN104045307B - A kind of facing mortar and preparation method thereof - Google Patents

A kind of facing mortar and preparation method thereof Download PDF

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Publication number
CN104045307B
CN104045307B CN201410322616.0A CN201410322616A CN104045307B CN 104045307 B CN104045307 B CN 104045307B CN 201410322616 A CN201410322616 A CN 201410322616A CN 104045307 B CN104045307 B CN 104045307B
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parts
facing mortar
semi
cement
portland cement
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CN104045307A (en
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薛伶俐
黎红兵
梁爽
刘延年
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Sichuan Academy of Architectural Sciences Co., Ltd.
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Sichuan Institute of Building Research
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Abstract

The invention discloses a kind of facing mortar, solve the problem that existing facing mortar easily whitens.The present invention is made up of the raw material of following weight portion: aluminate cement 40~80 parts, portland cement 1~30 part, semi-hydrated gypsum 20~30 parts, quartz sand 350~400 parts, latex powder 4~12 parts, cellulose ether 0.1~0.5 part, retarder 0.01~0.5 part, pigment 1~9 part, 75~90 parts of water;Wherein, aluminate cement, portland cement and semi-hydrated gypsum three's sum are 100 parts.The facing mortar of the present invention is without whiting, and stain resistance is good, and water absorption is low, and adhesion strength is high, and Long-Term Properties is good, fast in colour, and water-proof breathable properties is good.

Description

A kind of facing mortar and preparation method thereof
Technical field
The invention belongs to building material technical field, be specifically related to a kind of facing mortar and preparation method thereof.
Background technology
Facing mortar is the China's novel finishing material of one from external introduction, cement-based finishing mortar can be used for external and internal wall surface and ceiling decoration, there is good hydrophobicity and permeability, have good caking property with various basal planes (concrete, cement mortar etc.), not easily peel off and cracking;By selecting the aggregate of different-grain diameter, good texture and wall body decoration effect can be reached.Compared with coating, cement-based finishing mortar is not only constructed simple, quick, has very excellent long-time stability simultaneously;Compared with ceramic tile, cement-based finishing mortar light weight, during as skyscraper facing, will not there is brick phenomenon because of negative blast etc., and there is obvious economy.
The facing mortar problem that there will be whiting in application process being major gelled material with portland cement.Whiten and typically not cause mortar significantly to destroy, mainly affect the organoleptic quality of product, producing in very short time after building of being everlasting comes into operation, particularly when the color of colored mortar is deeper, the white macula that surface is formed can cause the irregular spot that contrast is strong.This is to affect one of major reason that Portland cement base facing mortar promotes the use of.
Aluminate cement has early-strong-fast-hard, resistant to elevated temperatures feature, will not produce Ca (OH) in hydration process2But, due to the transformation at aquation final hydration product crystal formation, it may occur that strength retraction.Portland cement strength development is more stable, but the Ca (OH) produced in hydration process2The whiting of facing mortar can be caused.
Summary of the invention
It is an object of the invention to provide a kind of facing mortar and preparation method thereof, solve the problem that existing facing mortar easily whitens.
To achieve these goals, technical scheme is as follows:
A kind of facing mortar, is made up of the raw material of following weight portion: aluminate cement 40~80 parts, portland cement 1~30 part, semi-hydrated gypsum 20~30 parts, quartz sand 350~400 parts, latex powder 4~12 parts, cellulose ether 0.1~0.5 part, retarder 0.01~0.5 part, pigment 1~9 part, 75~90 parts of water;Wherein, aluminate cement, portland cement and semi-hydrated gypsum three's sum are 100 parts.
Further, described aluminate cement is white aluminate cement;Described portland cement is the white portland cement of strength grade 52.5R;Described semi-hydrated gypsum is alpha-semi water plaster stone.
Yet further, described quartz sand adopts following particle diameter and grating: 40~70 orders, accounts for 55%~65%, and 70~100 orders account for 35%~45%;Described cellulose ether is viscosity is the hydroxyethylmethyl-cellulose of 40000~75000Pa s.
Further, described latex powder is ethene-vinyl acetate-acrylate terpolymer latex powder.
It addition, described retarder is monohydrate potassium;Described pigment is the inorganic red of ferrum oxide.
The preparation method of above-mentioned facing mortar, comprises the following steps:
(1) by aluminate cement, portland cement, semi-hydrated gypsum, quartz sand, latex powder, retarder and pigment dry mixing to uniform state, dry mash is obtained;
(2) adding water in blender, then dry mash adds stirring in blender, mixing time is 2~3 minutes, gets product.
The testing result of facing mortar of the present invention is as follows:
The key property of table 1 facing mortar
The present invention compared with prior art, has the following advantages and beneficial effect:
The present invention adopts the cooperation each other of each raw material, aluminate cement and portland cement are carried out compound, and adds semi-hydrated gypsum and adjust solidifying, and add other raw material, particularly select the quartz sand of appropriate particle size, Ca (OH) can be consumed when hydration process2Generate high sulfur type hydrated calcium aluminate sulfate (AFt) or low sulfur type hydrated calcium aluminate sulfate (AFm), to reach to suppress the purpose of whiting.
The facing mortar of the present invention is without whiting, and stain resistance is good, and water absorption is low, and adhesion strength is high, and Long-Term Properties is good, fast in colour, and water-proof breathable properties is good, and production technology is simple, and application process is convenient, environmental protection simultaneously.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment 1
A kind of facing mortar, is made up of the raw material of following weight portion: aluminate cement 65 parts, portland cement 10 parts, semi-hydrated gypsum 25 parts, 40~70 order quartz sand 160 parts, 70~100 order quartz sand 240 parts, latex powder 9 parts, cellulose ether 0.4 part, iron oxide red 9 parts, retarder 0.3 part, 90 parts of water.Preparation method is as follows:
Preparation method is as follows:
(1) by aluminate cement, portland cement, semi-hydrated gypsum, quartz sand, latex powder, retarder and pigment dry mixing to uniform state, dry mash is obtained;
(2) adding water in blender, then dry mash adds stirring in blender, mixing time is 2~3 minutes, gets product.
The mortar performance of the present embodiment such as following table.
The facing mortar performance indications of table 2 embodiment 1
Project Measured performance
Operable time 70min 2 -->
Initial dry cracking resistance Flawless
30min water absorption/g 1.1
240min water absorption/g 2.9
Rupture strength/MPa 7.8
Comprcssive strength/MPa 21.0
Tensile bond strength/MPa 0.72
Anti-whitening resistance Without visible whiting, not dry linting
Stain resistance (white or light color) 2
Embodiment 2
A kind of facing mortar, is made up of the raw material of following weight portion: aluminate cement 75 parts, portland cement 5 parts, semi-hydrated gypsum 20 parts, 40~70 order quartz sand 140 parts, 70~100 order quartz sand 210 parts, latex powder 9 parts, cellulose ether 0.4 part, iron oxide red 4 parts, retarder 0.2 part, 85 parts of water.Preparation method is with embodiment 1.
The mortar performance of the present embodiment such as following table.
The facing mortar performance indications of table 3 embodiment 2
Project Measured performance
Operable time 120min
Initial dry cracking resistance Flawless
30min water absorption/g 1.2
240min water absorption/g 3.1
Rupture strength/MPa 7.3
Comprcssive strength/MPa 25.0
Tensile bond strength/MPa 0.85
Anti-whitening resistance Without visible whiting, not dry linting
Stain resistance (white or light color) 1
Embodiment 3
A kind of facing mortar, is made up of the raw material of following weight portion: aluminate cement 60 parts, portland cement 10 parts, semi-hydrated gypsum 30 parts, 40~70 order quartz sand 152 parts, 70~100 order quartz sand 228 parts, latex powder 6 parts, cellulose ether 0.3 part, iron oxide red 3 parts, retarder 0.15 part, 80 parts of water.Preparation method is with embodiment 1.
The mortar performance of the present embodiment such as following table.
The facing mortar performance indications of table 4 embodiment 3
Project Measured performance
Operable time 65min
Initial dry cracking resistance Flawless
30min water absorption/g 1.7
240min water absorption/g 4.2
Rupture strength/MPa 5.1
Comprcssive strength/MPa 17.9 3 -->
Tensile bond strength/MPa 0.59
Anti-whitening resistance Without visible whiting, not dry linting
Stain resistance (white or light color) 2
Embodiment 4
A kind of facing mortar, is made up of the raw material of following weight portion: aluminate cement 55 parts, portland cement 20 parts, semi-hydrated gypsum 25 parts, 40~70 order quartz sand 148 parts, 70~100 order quartz sand 222 parts, latex powder 8 parts, cellulose ether 0.4 part, iron oxide red 5 parts, retarder 0.10 part, 77 parts of water.Preparation method is with embodiment 1.
The facing mortar performance indications of table 5 embodiment 4
Project Measured performance
Operable time 45min
Initial dry cracking resistance Flawless
30min water absorption/g 1.6
240min water absorption/g 4.3
Rupture strength/MPa 4.5
Comprcssive strength/MPa 15.9
Tensile bond strength/MPa 0.66
Anti-whitening resistance Without visible whiting, not dry linting
Stain resistance (white or light color) 2
According to above-described embodiment, the present invention just can be realized well.What deserves to be explained is; under premise based on said structure design, for solving same technical problem, even if some making in the present invention are without substantial change or polishing; the essence of the technical scheme adopted is still the same with the present invention, therefore it should also be as in protection scope of the present invention.

Claims (8)

1. a facing mortar, it is characterized in that, be made up of the raw material of following weight portion: aluminate cement 40~80 parts, portland cement 1~30 part, semi-hydrated gypsum 20~30 parts, quartz sand 350~400 parts, latex powder 4~12 parts, cellulose ether 0.1~0.5 part, retarder 0.01~0.5 part, pigment 1~9 part, 75~90 parts of water;Wherein, aluminate cement, portland cement and semi-hydrated gypsum three's sum are 100 parts.
2. a kind of facing mortar according to claim 1, it is characterised in that described aluminate cement is white aluminate cement.
3. a kind of facing mortar according to claim 1, it is characterised in that described portland cement is the white portland cement of strength grade 52.5R.
4. a kind of facing mortar according to claim 1, it is characterised in that described semi-hydrated gypsum is alpha-semi water plaster stone.
5. a kind of facing mortar according to claim 1, it is characterised in that described quartz sand adopts following particle diameter and grating: 40~70 orders, accounts for 55%~65%, and 70~100 orders account for 35%~45%.
6. a kind of facing mortar according to claim 1, it is characterised in that described latex powder is ethene-vinyl acetate-acrylate terpolymer latex powder.
7. a kind of facing mortar according to claim 1, it is characterised in that described retarder is monohydrate potassium.
8. a kind of facing mortar according to claim 1, it is characterised in that described pigment is the inorganic red of ferrum oxide.
CN201410322616.0A 2014-07-09 2014-07-09 A kind of facing mortar and preparation method thereof Active CN104045307B (en)

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CN104496382A (en) * 2014-11-24 2015-04-08 柳州立洁科技有限公司 Organic-inorganic composite thermal insulation mortar with low density and low shrinkage
CN104529341A (en) * 2014-11-26 2015-04-22 芜湖中民科技建材有限公司 Dry-mixed masonry mortar, and preparation method and application thereof
CN104591659B (en) * 2014-12-23 2017-10-31 武汉奥捷高新技术有限公司 A kind of bonding and the fast rigid mortar of joint filling for paster leatheroid brick
CN106630897A (en) * 2016-12-09 2017-05-10 广西北海浩邦新能源科技有限公司 Mortar for exterior wall facings of buildings
CN106966679B (en) * 2017-03-10 2019-05-14 同济大学 A kind of ternary gelling system facing mortar and its application method
CN107117913A (en) * 2017-05-09 2017-09-01 安徽梦谷纤维材料科技有限公司 A kind of facing mortar of low contract with dry rate
CN107602059A (en) * 2017-08-19 2018-01-19 湖南七纬科技有限公司 A kind of non-fading red facing mortar of environmental protection
CN107382228A (en) * 2017-08-29 2017-11-24 南通成山高分子材料有限公司 A kind of preparation method of colored finish mortar
CN107337413A (en) * 2017-08-29 2017-11-10 南通成山高分子材料有限公司 A kind of colored finish mortar
CN107721310A (en) * 2017-10-26 2018-02-23 君旺节能科技股份有限公司 Anti- accumulation of salt in the surface soil facing mortar composite bed
CN111995344B (en) * 2020-08-26 2022-05-27 亚士创能科技(滁州)有限公司 Decorative mortar and application thereof
CN112341114A (en) * 2020-10-20 2021-02-09 浙江忠信新型建材股份有限公司 Facing mortar with humidity adjusting function and preparation method thereof
CN112723853A (en) * 2020-12-31 2021-04-30 北京三棵树新材料科技有限公司 Efflorescence-free low-alkalinity high-fire-resistance inner and outer wall facing mortar and preparation method thereof
CN113860838A (en) * 2021-10-26 2021-12-31 同济大学 Anti-efflorescence color facing mortar
CN114315296A (en) * 2021-12-14 2022-04-12 盐城工学院 Gypsum-based colored facing mortar and preparation method thereof

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CN101475354A (en) * 2008-10-29 2009-07-08 汕头经济特区龙湖科技有限公司 Anti-crystalline bloom exterior wall facing mortar
CN101955344A (en) * 2010-08-26 2011-01-26 卢建华 Polymer cement-base wall colored finishing mortar
CN102584141A (en) * 2012-02-06 2012-07-18 凯诺(青岛)化学建材有限公司 Exterior wall facing mortar with inorganic characteristic and excellent crystalline bloom resistant performance

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101475354A (en) * 2008-10-29 2009-07-08 汕头经济特区龙湖科技有限公司 Anti-crystalline bloom exterior wall facing mortar
CN101955344A (en) * 2010-08-26 2011-01-26 卢建华 Polymer cement-base wall colored finishing mortar
CN102584141A (en) * 2012-02-06 2012-07-18 凯诺(青岛)化学建材有限公司 Exterior wall facing mortar with inorganic characteristic and excellent crystalline bloom resistant performance

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Address after: A section of Chengdu city Jinniu District 610000 North Road No. 55 in Sichuan Province

Patentee after: Sichuan Academy of Architectural Sciences Co., Ltd.

Address before: A section of Chengdu city Jinniu District 610000 North Road No. 55 in Sichuan Province

Patentee before: Research Inst. of Architectonics, Sichuan Prov.

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