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High performance cement-base self-leveling mortar

A self-leveling mortar, cement-based technology, applied in the field of cement-based building materials, can solve the problems of poor surface flatness, slow strength development, shrinkage cracking, etc., and achieve the effect of promoting strength development, rapid development and low shrinkage rate

Inactive Publication Date: 2014-10-22
广东省建筑工程监理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cement-based self-leveling mortar still has technical defects such as shrinkage cracking, hollowing, poor wear resistance, poor surface smoothness, and slow strength development in engineering applications. It is urgent to improve and perfect its performance. Provide technical support for wider application

Method used

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  • High performance cement-base self-leveling mortar

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] 30 parts of ordinary portland cement, 15 parts of sulfur aluminum silicate cement, 8 parts of fly ash, 4 parts of slag, 3 parts of silica fume, 5 parts of gypsum, 45 parts of fine aggregate, 20 parts of filler, 0.8 parts of water reducer 0.05 parts of water retaining agent, 6 parts of redispersible latex powder, 3.0 parts of early strength agent, 1.2 parts of defoamer, 0.3 parts of retarder, 1.0 part of fiber, and 18 parts of water.

Embodiment 2

[0026] 20 parts of ordinary portland cement, 10 parts of sulfur aluminum silicate cement, 12 parts of fly ash, 8 parts of slag, 8 parts of gypsum, 65 parts of fine aggregate, 30 parts of filler, 0.1 part of water reducing agent, 0.02 parts of water retaining agent 2 parts, 2 parts of redispersible latex powder, 0.2 parts of early strength agent, 0.1 part of defoamer, 0.1 part of retarder, 0.1 part of fiber, 24 parts of water.

Embodiment 3

[0028] 25 parts of ordinary portland cement, 12 parts of sulfoaluminum silicate cement, 10 parts of fly ash, 4 parts of silica fume, 10 parts of gypsum, 55 parts of fine aggregate, 25 parts of filler, 0.5 parts of water reducing agent, water retaining agent 0.03 parts, 4 parts of redispersible latex powder, 1.5 parts of early strength agent, 0.8 parts of defoamer, 0.2 parts of retarder, 0.5 parts of fiber, and 20 parts of water.

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Abstract

The invention discloses a high performance cement-base self-leveling mortar. The mortar is characterized by comprising cement, an auxiliary gel material, fine aggregate, a filling material, an additive, and water; wherein the cement is common silicate cement and sulphoaluminate-silicate cement, the auxiliary gel material comprises mineral slag, fly ash, silica fume, and gypsum, and the ratio of common silicate cement to sulphoaluminate-silicate cement to gypsum is equal to 1:0.2-0.6:0.1-0.4. The mortar has a self-leveling function without vibration, so the surface flatness is very high. The curing speed of the mortar is very quick, and after two hours, the strength of the mortar can meet the requirements of subsequent construction. Moreover the mortar has the advantages of low contraction rate, good volume stability, good surface wear resistance, and high compression strength.

Description

technical field [0001] The invention relates to a cement-based building material, in particular to a high-performance cement-based self-leveling mortar. Background technique [0002] Cement-based self-leveling mortar is composed of cementitious materials, fine aggregates, fillers and admixtures, etc. It is a self-leveling material with high fluidity after adding water. It has good fluidity and self-leveling function, and can be quickly solidified. It can be constructed on the floor material in a short time. It is firmly bonded to the substrate and has good characteristics such as high compressive strength. In recent years, not only has it been widely used in self-leveling floors, but it has also been greatly developed as a final finishing material. However, cement-based self-leveling mortar still has technical defects such as shrinkage cracking, hollowing, poor wear resistance, poor surface smoothness, and slow strength development in engineering applications. It is urgent ...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B111/62
Inventor 王元光李建新王新祥陈培鑫陈耿张永健郑靓
Owner 广东省建筑工程监理有限公司
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