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External-wall door and window rapid waterproof repairing mortar and preparation method thereof

A technology for repairing mortar and doors and windows, applied in the field of building materials, can solve problems such as insufficient water resistance, and achieve the effects of improving bonding performance, high strength and high density

Pending Publication Date: 2019-07-05
湖南大迈新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water resistance of this waterproof flexible cement-based dry-mix overlay repair mortar is still insufficient, and it is necessary to add an expansion agent to increase the expansion effect of the repair mortar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0037] The quick waterproof repair mortar for exterior walls, doors and windows of the present invention is prepared by mixing the following components by weight: 300 parts of ordinary portland cement, 100 parts of sulphoaluminate cement, 8 parts of calcium oxide, 200 parts of water, metakaolin 25 parts, 50 parts of heavy calcium carbonate, 250 parts of 40-mesh quartz sand, 100 parts of 60-mesh quartz sand, 2 parts of hydroxypropyl methylcellulose ether, 2 parts of wood fiber, 1 part of polycarboxylate water reducer, 10 parts of styrene-butadiene rubber powder, 5 parts of calcium formate, and 3 parts of citric acid.

[0038] The fast waterproof repair mortar for exterior walls, doors and windows prepared according to the scheme has no shrinkage, micro-expansion, no cracking, high density, high strength and anti-leakage.

Embodiment approach 2

[0040] The quick waterproof repair mortar for exterior walls, doors and windows of the present invention is prepared by mixing the following components by weight: 250 parts of ordinary portland cement, 150 parts of sulphoaluminate cement, 10 parts of calcium oxide, 180 parts of water, metakaolin 20 parts, 30 parts of heavy calcium carbonate, 300 parts of 40-mesh quartz sand, 100 parts of 60-mesh quartz sand, 1.5 parts of hydroxyethyl methyl cellulose ether, 1.5 parts of wood fiber, 0.5 parts of polycarboxylate water reducer, 15 parts of acrylic polymer powder, 3 parts of calcium formate, and 2 parts of tartaric acid.

[0041] The fast waterproof repair mortar for exterior walls, doors and windows prepared according to the scheme has no shrinkage, micro-expansion, no cracking, high density, high strength and anti-leakage.

Embodiment approach 3

[0043] The quick waterproof repair mortar for exterior walls, doors and windows of the present invention is prepared by mixing the following components by weight: 350 parts of ordinary Portland cement, 120 parts of sulphoaluminate cement, 7 parts of calcium oxide, 200 parts of water, metakaolin 30 parts, 30 parts of heavy calcium carbonate, 10 parts of light calcium carbonate, 200 parts of 40-mesh quartz sand, 100 parts of 60-mesh quartz sand, 2.5 parts of hydroxypropyl methylcellulose ether, 2.5 parts of wood fiber, polycarboxylic acid It is 1.5 parts of water reducing agent, 5 parts of vinyl acetate-ethylene copolymer rubber powder, 8 parts of calcium formate, and 5 parts of lactic acid.

[0044] The fast waterproof repair mortar for exterior walls, doors and windows prepared according to the scheme has no shrinkage, micro-expansion, no cracking, high density, high strength and anti-leakage.

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Abstract

The invention discloses external-wall door and window rapid waterproof repairing mortar and a preparation method thereof. The external-wall door and window rapid waterproof repairing mortar comprisesthe following components in parts by weight: 250-350 parts of ordinary Portland cement, 100-150 parts of sulphoaluminate cement, 7-10 parts of calcium oxide, 150-200 parts of water, 20-30 parts of metakaolin, 30-60 parts of filler, 300-400 parts of quartz sand, 1.5-2.5 parts of cellulose ether, 1.5-2.5 parts of wood fiber, 0.5-1.5 parts of water reducing agent, 5-15 parts of rubber powder, 3-8 parts of calcium formate, and 2-5 parts of retarder. The external-wall door and window rapid waterproof repairing mortar has the advantages of less components, low raw material cost, no shrinkage, micro-expansion function, no cracking, high density, high strength and leakage resistance.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a waterproof repair mortar and a preparation method. Background technique [0002] With the rapid development of the national economy, people's demand for buildings is also constantly developing. Concrete is the most used building structure material today. Due to reasons such as unreasonable design of concrete structures, construction defects, environmental erosion, improper maintenance, etc. Cracking and damage of concrete are inevitable in engineering applications. Concrete cracking and damage will seriously affect the normal use of concrete structures, if not repaired, it will bring great safety hazards and economic losses. [0003] The existing repair materials include traditional inorganic repair materials such as ordinary portland cement repair mortar, polymer repair materials and polymer modified repair materials. Because ordinary cement-based repair mortar is a typical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06
CPCC04B28/06C04B2111/72C04B7/02C04B14/106C04B14/28C04B14/06C04B18/26C04B22/064C04B24/04C04B24/383C04B24/26C04B2103/302C04B2103/22
Inventor 徐跃文杨小钱许章文
Owner 湖南大迈新材科技有限公司
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