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External wall anti-crack mortar

An anti-cracking mortar and exterior wall technology, applied in the field of building materials, can solve the problems of complex process and increased cost.

Pending Publication Date: 2021-10-22
龙南县彩艺装饰材料厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of the above-mentioned various methods is greatly improved, and the technological process is very complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] An anti-cracking mortar for external walls, raw materials include P.O42.5 cement: 325 parts, machine-made sand: 650 parts, 325 mesh heavy calcium powder: 25 parts, cellulose ether: 4 parts, modified fiber: 4 parts, latex Powder: 15 parts, modified sealing agent 2 parts.

[0051] The modified fiber is: 20 parts of polypropylene fiber, 33 parts of lignin fiber, 13 parts of steel nanofiber, 13 parts of brucite fiber, 13 parts of sepiolite fiber, 10 parts of 10mm carbon fiber, 7 parts of 6mm basalt fiber Modified after mixing.

[0052] Wherein, the specific modification process of the fiber is as follows:

[0053] 1) Cut polypropylene fibers, steel nanofibers, and brucite fibers into 10mm-long chopped fibers, add lignin fibers, sepiolite fibers, 10mm carbon fibers, and 6mm basalt fibers to them, and mix them according to the proportion well mixed;

[0054] 2) Soak the above uniformly mixed fibers in the sol solution, slowly raise the temperature to 73°C at a rate of 2°C / ...

Embodiment 2

[0078] An anti-cracking mortar for external walls, raw materials include P.O42.5 cement: 300 parts, machine-made sand: 650 parts, 325 mesh heavy calcium powder: 50 parts, cellulose ether: 3 parts, modified fiber: 5 parts, latex Powder: 12 parts, modified sealing agent 3 parts.

[0079] The modified fiber is: 25 parts of polypropylene fiber, 30 parts of lignin fiber, 15 parts of steel nanofiber, 10 parts of brucite fiber, 15 parts of sepiolite fiber, 5 parts of 10mm carbon fiber, and 8 parts of 6mm basalt fiber Modified after mixing.

[0080] Wherein, the specific modification process of the fiber is as follows:

[0081] 1) Cut polypropylene fibers, steel nanofibers, and brucite fibers into 10mm-long chopped fibers, add lignin fibers, sepiolite fibers, 10mm carbon fibers, and 6mm basalt fibers to them, and mix them according to the proportion well mixed;

[0082] 2) Soak the uniformly mixed fibers above in the sol solution, slowly raise the temperature to 70°C at a rate of 3°C...

Embodiment 3

[0106] An anti-crack mortar for external walls, raw materials include P.O42.5 cement: 350 parts, machine-made sand: 650 parts, cellulose ether: 5 parts, modified fiber: 3 parts, latex powder: 18 parts, modified solidification 1 dose.

[0107] The modified fiber is: 15 parts of polypropylene fiber, 35 parts of lignin fiber, 10 parts of steel nanofiber, 15 parts of brucite fiber, 10 parts of sepiolite fiber, 15 parts of 10mm carbon fiber, 5 parts of 6mm basalt fiber Modified after mixing.

[0108] Wherein, the specific modification process of the fiber is as follows:

[0109] 1) Cut polypropylene fibers, steel nanofibers, and brucite fibers into 10mm-long chopped fibers, add lignin fibers, sepiolite fibers, 10mm carbon fibers, and 6mm basalt fibers to them, and mix them according to the proportion well mixed;

[0110] 2) Soak the uniformly mixed fibers above in the sol solution, slowly raise the temperature to 75°C at a rate of 1°C / min, keep warm for 3 hours, and carry out pr...

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Abstract

The invention provides a preparation method of external wall anti-crack mortar. The modified fibers are added, the crack resistance of the mortar is improved, and the fibers are subjected to surface modification, the fibers can be uniformly dispersed in the mortar, and the effects of the fibers can be exerted. Due to the fact that the difference between the heat conductivity coefficients of mortar and the heat preservation plate is large, the deformation amount difference of a plastering mortar layer caused by temperature difference changes is large, and the mortar is prone to cracking, modified plastic particles are added into sand, so that the temperature difference coefficient of the mortar becomes small, cracking of the mortar is prevented from the source, and the mortar has the effects of heat preservation, heat insulation and sound resistance. The modified sealing agent is added, the agglomeration phenomenon in the mortar is reduced, and flame-retardant components exist in the modified sealing agent, spontaneous combustion of the plastic sand at high temperature is prevented, and the safety coefficient of the wall surface is improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a dry-mixed anti-crack mortar for exterior walls. Background technique [0002] With the deepening of the promotion and application of energy-saving buildings, external wall insulation systems have been widely used. Due to the large changes in the ambient temperature and humidity of the external wall thermal insulation system, large self-shrinkage, or improper construction methods, it is easy to cause hollowing, cracking, and falling off of the external thermal insulation layer of the external wall, thereby causing wall leakage. , ventilation, peeling and other issues. One of the most effective ways to solve this problem is to wipe the anti-crack mortar on the basis of the insulation layer. Anti-cracking mortar for exterior walls is made by mixing cementitious materials, fillers, fibers, and admixtures according to a certain formula. It is a polymer mortar material t...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B20/02C04B14/38C04B14/46C04B14/48C04B16/06C04B18/26C04B24/42C04B111/34
CPCC04B28/04C04B20/023C04B16/0633C04B18/26C04B14/48C04B14/46C04B14/4643C04B14/386C04B14/4656C04B40/0046C04B2111/343C04B2201/32C04B14/06C04B14/28C04B24/383C04B16/04C04B24/281C04B24/286C04B24/2641C04B24/42Y02W30/91
Inventor 谢咏宸李炬轩徐观明黄晓东廖房朋钟林峰
Owner 龙南县彩艺装饰材料厂
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