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Self-leveling polymer cement base repair mortar and preparation method thereof

A repairing mortar and self-leveling technology, applied in the field of building repairing materials, can solve the problems of the large difference in the expansion coefficient of the base concrete, the different influence of the strength of the cement mortar, and the poor compactness of the hardened slurry, so as to achieve uniform surface finish and self-leveling performance. Good, improve the effect of adhesion

Inactive Publication Date: 2011-09-07
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The three types of products have their own characteristics. The price of cement is cheap but the repair effect is not good; It has different effects on the strength of cement mortar and is difficult to mix
Chinese patent CN200810041001.5 relates to a preparation method of a waterproof sealing adhesive material. Since the invention does not use a water-retaining agent and a defoamer in combination, the compactness of the hardened slurry is poor, and it is easy to cause damage during construction in a hot environment. Problems with cracking of the repair mortar surface due to excessive water evaporation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The self-leveling polymer cement-based repair mortar of the present invention is composed of the following components by weight, 10 parts of 42.5 Portland cement; 40 parts of sulphoaluminate cement; 10 parts of fly ash; 1 part of silica fume; 6 parts of heavy calcium 40 parts of quartz sand; 1 part of redispersible rubber powder; 0.6 parts of sodium silicate; 0.5 parts of water reducing agent; 0.1 part of water retaining agent; . Add each component into the mixing chamber one after another, start the machine and stir for 10-20 minutes, discharge, pack in bags, and make mortar powder. When in use, the dry powder material and water can be used after being evenly stirred according to the ratio of 1:0.25 (weight ratio).

Embodiment 2

[0030] The self-leveling polymer cement-based repair mortar of the present invention is composed of the following components by weight, 50 parts of 42.5 Portland cement; 10 parts of sulphoaluminate cement; 10 parts of fly ash; 1 part of silica fume; 5 parts of filler ; 32 parts of quartz sand; 2 parts of redispersible rubber powder; 0.5 parts of sodium stearate; 0.3 parts of water reducing agent; 0.1 part of water retaining agent; . Add each component into the mixing chamber one after another, start the machine and stir for 10-20 minutes, discharge, pack in bags, and make mortar powder. When in use, the dry powder material and water can be used after being evenly stirred according to the ratio of 1:0.25 (weight ratio).

Embodiment 3

[0032] The self-leveling polymer cement-based repair mortar of the present invention is composed of the following components by weight: 50 parts of 42.5 portland cement; 10 parts of sulphoaluminate cement; 10 parts of fly ash; 5 parts of silica fume; 70 parts of quartz sand 5 parts; redispersible rubber powder 5 parts; sodium silicate: 0.2 parts; water reducing agent 0.1 part; water retaining agent 0.1 part; defoamer 0.2 part; Add each component into the mixing chamber one after another, start the machine and stir for 10-20 minutes, discharge, pack in bags, and make mortar powder. When in use, the dry powder material and water can be used after being evenly stirred according to the ratio of 1:0.25 (weight ratio).

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Abstract

The invention provides a self-leveling polymer cement base repair mortar which is used for repairing cracks of a concrete building. The self-leveling polymer cement base repair mortar comprises the following components in part by weight: 25 to 60 parts of cement, 40 to 70 parts of sand, 1 to 5 parts of redispersible rubber powder, 0.2 to 1.0 part of interface reinforcing agent, 0.1 to 0.5 part of water-retaining agent, and 0.1 to 1 part of water reducing agent; the self-leveling polymer cement base repair mortar has high self-leveling performance; after the building is repaired by the mortar, the whole flatness is high, surface finishment is uniform, and the decoration performance is high; the mortar has high crack infiltration capacity, can infiltrate the crack with the length of less than 1mm, has high bonding strength between the mortar and the original concrete, and does not fall off after being dried and hardened; and after being hardened, the mortar has micro expansion performance, and can compensate the partial shrinkage of concrete, improve the impermeability of the concrete, and is suitable for crack repairing of the concrete.

Description

Technical field: [0001] The invention relates to a building repair material, in particular to a novel self-leveling polymer cement-based repair mortar. Background technique: [0002] With the increase of the service life of reinforced concrete buildings, the aging diseases of concrete buildings are becoming more and more serious, and the damage mainly includes cracks, leakage and erosion. These damages lead to reduced service life and increasingly unattractive appearance of reinforced concrete buildings. At present, there are three main types of repair materials to solve this problem: cement mortar, resin mortar, and polymer cement mortar. The three types of products have their own characteristics. The price of cement is cheap but the repair effect is not good; It has different effects on the strength of cement mortar and is difficult to mix. After these materials are repaired, the surface is uneven and needs to be smoothed again, which increases manpower and material res...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B111/72
Inventor 田凤兰段文锋熊卫锋
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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