Alkali excited fly ash repairing mortar and production method thereof
A technology for repairing mortar and fly ash, applied in the field of repairing mortar, can solve the problems of poor construction performance, large amount of cement, large shrinkage and deformation, etc., and achieve the effects of good bearing performance, strong adhesion, and small shrinkage and deformation
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Embodiment 1
[0028] An alkali-activated fly ash repair mortar, comprising the following components by weight: 30 parts of fly ash, 1 part of metakaolin, 1 part of cement, 40 parts of sand, 10 parts of sodium silicate, 2 parts of sodium hydroxide, 0.8 part of redispersible latex powder, 0.02 part of water retaining agent, 0.02 part of short fiber and 0.5 part of plasticizer.
[0029] In this embodiment, the particle diameter of fly ash is lower than 75um, contains SiO in the fly ash 2 、Al 2 o 3 and Fe 2 o 3 The calcium content is 72%, and the calcium content is less than 10%. mesh; the sand is 40-70 mesh dried river sand.
[0030]Preferably in this embodiment, the redispersible latex powder is vinyl acetate and ethylene copolymerized rubber powder; the water-retaining agent is cellulose ether, wherein the cellulose ether is hydroxypropyl methylcellulose ether, and the viscosity is between 40000mPa.s and 75000mPa between .s; the cement is ordinary Portland cement, and the cement streng...
Embodiment 2
[0038] An alkali-activated fly ash repair mortar comprises the following components by weight: 50 parts of fly ash, 10 parts of metakaolin, 10 parts of cement, 60 parts of sand, 15 parts of sodium silicate, 4 parts of sodium hydroxide, 1.2 parts of redispersible latex powder, 0.04 parts of water retaining agent, 0.04 parts of short fiber and 1 part of plasticizer.
[0039] In this embodiment, the particle diameter of fly ash is lower than 75um, contains SiO in the fly ash 2 、Al 2 o 3 and Fe 2 o 3 The calcium content is 85%, the calcium content is less than 10%, it belongs to F-class fly ash, and its ignition loss is less than 10%, mainly from bituminous coal-fired power plants, boiler factories, etc.; The sand is a mixture of 40-70 mesh dried river sand, 70-140 mesh dried river sand, 40-70 mesh quartz sand and 70-140 mesh quartz sand.
[0040] Preferably in this embodiment, the redispersible latex powder is terpolymerized rubber powder of ethylene, vinyl chloride and viny...
Embodiment 3
[0049] An alkali-activated fly ash repair mortar comprises the following components by weight: 40 parts of fly ash, 5 parts of metakaolin, 5 parts of cement, 50 parts of sand, 12 parts of sodium silicate, 3 parts of sodium hydroxide, 1 part of redispersible latex powder, 0.03 part of water retaining agent, 0.03 part of short fiber and 0.8 part of plasticizer.
[0050] In this embodiment, the particle diameter of fly ash is lower than 75um, contains SiO in the fly ash 2 、Al 2 o 3 and Fe 2 o 3 The calcium content is 80%, the calcium content is less than 10%, and it belongs to F-class fly ash, and its ignition loss is less than 10%, mainly from bituminous coal-fired power plants, boiler factories, etc.; the particle size of heavy calcium powder is 200-400 mesh; the sand is a mixture of 70-140 mesh dried river sand and 40-70 mesh quartz sand.
[0051] Preferably in this embodiment, the redispersible latex powder is vinyl acetate, ethylene and higher fatty acid vinyl ester ter...
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Abstract
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