Environmentally-friendly and fadeless red decorative finish mortar

A technology of veneer mortar and red, applied in the field of red veneer mortar, can solve the problems of prone to color difference, uneven pigment dispersion, efflorescence, etc., and achieve the effect of improving efflorescence performance, promoting hydration reaction, and improving compactness.

Pending Publication Date: 2018-01-19
HUNAN QIWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the Ca(OH) produced in the cement hydration reaction 2 When dissolved in water, it will gradually precipitate to the surface of the building with the evaporation of water in the mortar, and the CO in the air will 2 The reaction forms a white deposit, and the current facing mortar is prone to efflorescence, and due to uneven dispersion of pigments and sun fading, it is prone to color difference

Method used

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  • Environmentally-friendly and fadeless red decorative finish mortar

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Comparison scheme
Effect test

Embodiment 1

[0026] An environmentally friendly, non-fading red facing mortar, consisting of the following parts by weight of raw materials: 40 parts of white Portland cement, 3 parts of phosphoaluminate cement, 20 parts of calcined coal gangue powder, 8 parts of redispersible latex powder , 1 part of nano silica, 2 parts of rheological thickener, 0.5 part of water reducing agent, 1.5 part of water repellent, 0.2 part of reinforcing agent, 1 part of wetting and dispersing agent, 0.01 part of defoaming agent, 0.5 part of phytic acid , 80 parts of washed river sand.

[0027] The redispersible latex powder is ethylene-vinyl acetate copolymer latex powder.

[0028] The average particle size of the nano silica is 15 nm, and the SiO2 content is 99.5%.

[0029] The rheological thickener consists of hydroxypropyl starch ether and γ-aminopropyl triethoxysilane.

[0030] The water reducing agent is a naphthalene water reducing agent.

[0031] The water repellent is composed of aluminum chloride and zinc ste...

Embodiment 2

[0036] An environmentally friendly, non-fading red facing mortar, consisting of the following parts by weight of raw materials: 50 parts by weight of white Portland cement, 1 part of phosphoaluminate cement, 30 parts of calcined coal gangue powder, 3 parts of redispersible latex powder , 5 parts of nano silica, 0.1 part of rheological thickener, 1 part of water reducing agent, 0.5 part of water repellent, 0.8 part of reinforcing agent, 0.1 part of wetting and dispersing agent, 0.05 part of defoaming agent, 0.1 part of phytic acid , 100 parts of washed river sand.

[0037] The white Portland cement is white Portland cement that meets the 42.5 grade requirements in GB / T 2015-2005 "White Portland Cement".

[0038] The phosphoaluminate cement is a system cementing material described in Chinese Patent CN1498870, with an alkali content of 80MPa.

[0039] The calcined coal gangue powder is calcined from coal gangue at 700-900℃ for 1-2h and then ground to specific surface area ≥450m 2 / kg, ...

Embodiment 3

[0050] An environmentally friendly, non-fading red facing mortar, composed of the following parts by weight of raw materials: 45 parts of white Portland cement, 2 parts of phosphoaluminate cement, 25 parts of calcined coal gangue powder, and 5 parts of redispersible latex powder , 4 parts of nano silica, 1 part of rheological thickener, 0.8 part of water reducing agent, 1.2 part of water repellent, 0.6 part of reinforcing agent, 0.9 part of wetting and dispersing agent, 0.04 part of defoaming agent, 0.4 part of phytic acid , 90 parts of washed river sand.

[0051] The alkali content of the phosphoaluminate cement is 0.35%, the 12h compressive strength is 48.1MPa, and the 28d compressive strength is 90.30MPa.

[0052] The calcined coal gangue powder is calcined at 700°C for 2 hours and then ground to a specific surface area of ​​≥450m 2 / kg, the ignition loss is 3%, the 7d activity is 82%, and the 28d activity is 93%.

[0053] The redispersible latex powder is ethylene-vinyl acetate ...

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Abstract

The invention belongs to the technical field of building materials, and discloses an environmentally-friendly and fadeless red decorative finish mortar. The mortar comprises, by weight, 40-50 parts ofwhite Portland cement, 1-3 parts of phosphoaluminate cement, 20-30 parts of calcined gangue powder, 3-8 parts of redisperable latex powder, 1-5 parts of nano-silica, 0.1-2 parts of a rheological thickener, 0.5-1 part of a water reducer, 0.5-1.5 parts of a water repellent, 0.2-0.8 part of a reinforcing agent, 0.1-1 part of a wetting dispersant, 0.01-0.05 part of an antifoaming agent, 0.1-0.5 partof phytic acid and 80-100 parts of washed river sands. All above components have synergistic effects, so the obtained decorative finish mortar has the advantages of no saltpetering, no color difference and good mechanical properties.

Description

Technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an environmentally-friendly, non-fading red facing mortar. technical background [0002] With the development of urban construction, people pay more and more attention to the exterior wall decoration and repair of buildings. Compared with the decorative layer made of organic materials such as paint, the decorative mortar has good matching and compatibility with the external insulation system. Compared with the tile facing, the facing mortar layer is thinner and lighter in weight. When used as a high-rise building facing layer, it will not fall off due to wind pressure and other problems, avoiding potential safety hazards. At present, the types of facing mortar can be roughly divided into three categories according to the formula: ordinary Portland cement system, aluminate cement system and ordinary Portland cement and gypsum mixed system. Because the Ca(OH) pro...

Claims

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Application Information

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IPC IPC(8): C04B28/34C04B111/20
Inventor 程旺生
Owner HUNAN QIWEI TECH CO LTD
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