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A platform for research: civil engineering, architecture and urbanism
Low-shrinkage mortar for aerated bricks
The invention discloses low-shrinkage mortar for aerated bricks. The low-shrinkage mortar comprises, by weight, 55% of quartz sand, 10% of coal ash, 4% of magnesium lime, 2% of calcium carbonate, 3% of bentonite, 2.5% of xonotlite, 9% of cement, 10% of ceramsite sand, 2.5% of redispersible latex powder, 1% of water reducing agents and 1% of additives. The low-shrinkage mortar has the advantages that the low-shrinkage mortar is simple in production process, low in cost and heat conductivity coefficient and high in strength, is environmental friendly and conforms to environmental protection requirements, excellent anti-cracking effects can be realized, energy can be saved, and requirements of construction engineering can be met; the calcium carbonate is grafted and modified and is dispersed in mortar to form dispersion systems, accordingly, internal stress of the mortar can be absorbed, and shrinkage settlement of the mortar can be reduced; calcined magnesium lime and xonotlite powder is added into the mortar, so that the impermeability performance of the mortar further can be improved, and the problem of phenomena of poor hardening, cracking and the like due to the fact that existing mortar is excessively quickly dried and has insufficient moisture can be effectively solved; the quartz sand is pre-treated, so that the plasticity of the mortar can be enhanced, and the construction operability can be improved.
Low-shrinkage mortar for aerated bricks
The invention discloses low-shrinkage mortar for aerated bricks. The low-shrinkage mortar comprises, by weight, 55% of quartz sand, 10% of coal ash, 4% of magnesium lime, 2% of calcium carbonate, 3% of bentonite, 2.5% of xonotlite, 9% of cement, 10% of ceramsite sand, 2.5% of redispersible latex powder, 1% of water reducing agents and 1% of additives. The low-shrinkage mortar has the advantages that the low-shrinkage mortar is simple in production process, low in cost and heat conductivity coefficient and high in strength, is environmental friendly and conforms to environmental protection requirements, excellent anti-cracking effects can be realized, energy can be saved, and requirements of construction engineering can be met; the calcium carbonate is grafted and modified and is dispersed in mortar to form dispersion systems, accordingly, internal stress of the mortar can be absorbed, and shrinkage settlement of the mortar can be reduced; calcined magnesium lime and xonotlite powder is added into the mortar, so that the impermeability performance of the mortar further can be improved, and the problem of phenomena of poor hardening, cracking and the like due to the fact that existing mortar is excessively quickly dried and has insufficient moisture can be effectively solved; the quartz sand is pre-treated, so that the plasticity of the mortar can be enhanced, and the construction operability can be improved.
Low-shrinkage mortar for aerated bricks
SHEN SHENGXIANG (author) / LI FENGBI (author)
2015-12-30
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME