High-performance facing mortar and preparation method thereof

A decorative mortar, high-performance technology, applied in the field of building materials, can solve problems such as affecting the aesthetics and durability of decoration, poor wall bonding strength, affecting production efficiency, etc., to speed up the cement hydration process, flame retardancy Good, improve the effect of early and long-term flexural strength

Inactive Publication Date: 2021-02-02
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although cement-based finishing materials have the above advantages, there are also some disadvantages, such as poor stain resistance, easy frosting on the surface, poor bonding strength with the wall, poor durability, and low mortar strength, etc., which affect the beauty of decoration. and durability
Moreover, when it is applied to the integrated system of building insulation and decoration, its setting time is relatively slow, which will also affect the factory production efficiency of the integrated system of building insulation and decoration.

Method used

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  • High-performance facing mortar and preparation method thereof

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Effect test

preparation example Construction

[0050] The preparation method of high-performance facing mortar comprises the following steps:

[0051] Step 1, weighing various raw materials according to weight ratio.

[0052] Step 2: Add the weighed white Portland cement, sulphoaluminate cement, superfine gypsum powder, calcium sulfate whiskers, slag micropowder and high-activity metakaolin into the mixer and mix for 1min-2min.

[0053] Step 3, add the weighed styrene-acrylic emulsion, terpene emulsion, air-entraining agent, defoamer, wetting agent, water-repellent agent, leveling agent and inorganic pigment into the mixer and continue mixing for 2min-3min.

[0054] Step 4, add the weighed quartz sand into the mixer and mix for 2min-3min, then slowly add 20%-25% of the water of the total weight of the high-performance finishing mortar, stir well and then use it.

Embodiment 1

[0057] A high-performance finishing mortar, according to 100 parts of white Portland cement, 28 parts of sulphoaluminate cement, 13 parts of superfine gypsum powder, 5 parts of calcium sulfate whiskers, 25 parts of slag micropowder, and 7 parts of high-activity metakaolin , 3 parts of modified styrene-acrylic emulsion, 5 parts of terpene emulsion, 0.2 part of sodium laurate sulfate air-entraining agent, 0.4 part of polydimethylsiloxane defoamer, 1 part of hydrazide wetting agent, polysiloxane It is prepared by weight ratio of 1 part of water-repellent agent, 1 part of polysiloxane-ether copolymer leveling agent, 5 parts of nano-iron oxide red, and 400 parts of quartz sand.

[0058] First add white Portland cement, sulphoaluminate cement, superfine gypsum powder, calcium sulfate whiskers, slag micropowder and high-activity metakaolin into the mixer and mix for 2 minutes; then add styrene-acrylic emulsion, terpene emulsion, lauric acid base Add sodium sulfate air-entraining agen...

Embodiment 2

[0061] A high-performance finishing mortar, according to 100 parts of white Portland cement, 28 parts of sulphoaluminate cement, 15 parts of superfine gypsum powder, 5 parts of calcium sulfate whiskers, 22 parts of slag micropowder, and 8 parts of high-activity metakaolin , 1 part of modified styrene-acrylic emulsion, 7 parts of terpene emulsion, 0.2 part of sodium laurate sulfate air-entraining agent, 0.4 part of polydimethylsiloxane defoamer, 1 part of hydrazide wetting agent, polysiloxane It is prepared by weight ratio of 1 part of water-repellent agent, 1 part of polysiloxane-ether copolymer leveling agent, 5 parts of nano-iron oxide red, and 400 parts of quartz sand.

[0062] First add white Portland cement, sulphoaluminate cement, superfine gypsum powder, calcium sulfate whiskers, slag micropowder and high-activity metakaolin into the mixer and mix for 2 minutes; then add styrene-acrylic emulsion, terpene emulsion, lauric acid base Add sodium sulfate air-entraining agent...

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Abstract

The invention belongs to the technical field of building materials, and provides high-performance facing mortar and a preparation method thereof. The high-performance facing mortar is prepared from white Portland cement, sulphoaluminate cement, superfine gypsum powder, calcium sulfate whiskers, superfine slag powder, high-activity metakaolin, modified styrene-acrylic emulsion, terpene emulsion, anair entraining agent, an antifoaming agent, a wetting agent, a water repellent, a leveling agent, an inorganic pigment and quartz sand. The preparation method comprises the following steps: mixing white Portland cement, sulphoaluminate cement, ultrafine gypsum powder, calcium sulfate whiskers, superfine slag powder and high-activity metakaolin, then adding other raw materials, conducting mixing,adding water accounting for 20-25% of the total weight of the high-performance facing mortar, and conducting uniform stirring before usage. The high-performance facing mortar provided by the inventionhas good physical and mechanical properties and decorative properties; in particular, the frosting problem of the facing mortar is practically solved, the facing mortar is endowed with excellent stain resistance, and the high-performance facing mortar can meet the use requirements for adjustable setting time and operable time and improves construction efficiency.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a high-performance facing mortar and a preparation method thereof. Background technique [0002] my country's annual new construction is about 2 billion m 2 Most of the decorative layers of the exterior walls of these buildings are ceramic tiles or latex paint, and very few finishing mortars are used, so the finishing mortars have great potential for development. Since the elastic modulus and thermal expansion coefficient of the facing mortar are similar to the plastering mortar of the external wall insulation system, it has good matching and compatibility with the external wall insulation system. Finishing mortar is a new type of building decoration material for building wall surfaces composed of aggregates, inorganic cementitious materials, fillers, and additives. Compared with facing bricks and decorative panels, facing mortar has the characteristics o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/16C04B111/20C04B111/27
CPCC04B28/16C04B2111/20C04B2111/27C04B11/264C04B7/02C04B7/32C04B14/383C04B18/141C04B14/106C04B24/2641C04B24/2611C04B24/16C04B24/42C04B24/12C04B14/308C04B14/06
Inventor 张国防罗顺王博王顺祥王聪王培铭
Owner TONGJI UNIV
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