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Self-leveling mortar anti-shrinking agent and preparation method and application thereof

The technology of self-leveling mortar and anti-shrinkage agent is applied in the field of self-leveling mortar anti-shrinkage agent, which can solve the problem of not being fully applicable, and achieve the effects of improving deformation resistance and increasing flexibility.

Active Publication Date: 2010-09-01
常熟市博海新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various additives for concrete have flourished, but since self-leveling mortar is a special system in the field of concrete, many concrete additives cannot be fully applied to the self-leveling mortar system
Many problems with self-leveling mortars require more additives suitable for self-leveling mortar systems

Method used

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  • Self-leveling mortar anti-shrinking agent and preparation method and application thereof
  • Self-leveling mortar anti-shrinking agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 80 parts of bauxite, 6 parts of sodium carbonate, 0.5 parts of cerium trichloride, 100 parts of zeolite, 10 parts of natural alunite, 40 parts of dihydrate gypsum, N-2-(aminoethyl)-3-aminopropyl trimethyl 1.5 parts of oxysilane.

[0029] (1) Preparation of component A, mix bauxite and sodium carbonate and calcine at 350°C for 3 hours, after cooling, grind the mixture with a grinder until the average particle size is 500 mesh, and then put the powder in the mixing tank Internally heated to about 80°C, spray the cerium trichloride ethanol solution with a weight concentration of 3.5% on the powder, stir for 1 hour, and evaporate the ethanol;

[0030] (2) Preparation of component B. Put zeolite powder, natural alunite, and dihydrate gypsum into a grinder to grind to a fineness of 400 meshes, then put the powder in a mixing kettle and heat it to about 90°C. % N-2-(aminoethyl)-3-aminopropyltrimethoxysilane ethanol solution is sprayed on the powder, stirred for 1 hour, the et...

Embodiment 2

[0032] 90 parts of bauxite, 7 parts of sodium carbonate, 1 part of cerium trichloride, 100 parts of zeolite, 12 parts of natural alunite, 45 parts of dihydrate gypsum, N-2-(aminoethyl)-3-aminopropyl trimethyl 2 parts of oxysilane.

[0033] (1) Preparation of component A, mix bauxite and sodium carbonate and calcine at 380°C for 3 hours, after cooling, use a grinder to grind the mixture to an average particle size of 600 mesh, and then put the powder in the mixing kettle Heat to about 80°C, spray cerium trichloride ethanol solution with a weight concentration of 5% on the powder, stir for 1 hour, and evaporate the ethanol;

[0034] (2) Preparation of component B, put zeolite powder, natural alunite, and dihydrate gypsum into a grinder and grind to an average particle size of 400 mesh fineness, then put the powder in a mixing kettle and heat it to about 90°C, and the weight A 12% ethanol solution of N-2-(aminoethyl)-3-aminopropyltrimethoxysilane was sprayed on the powder and st...

Embodiment 3

[0036] 100 parts of bauxite, 8 parts of sodium carbonate, 1.5 parts of cerium trichloride, 100 parts of zeolite, 15 parts of natural alunite, 50 parts of dihydrate gypsum, N-2-(aminoethyl)-3-aminopropyl trimethyl 3 parts of oxysilane.

[0037] (1) Preparation of component A, mix bauxite and sodium carbonate and calcinate at 400°C for 3 hours, after cooling, grind the mixture to 400 mesh fineness with a grinder, and then heat the powder in a mixing kettle At about 80°C, spray cerium trichloride with a weight concentration of 8% on the powder with ethanol solution, stir for 1 hour, and evaporate the ethanol;

[0038] (2) Preparation of component B, put zeolite, natural alunite, and dihydrate gypsum into a grinder to grind to a fineness of 600 mesh, then put the powder in a mixing kettle and heat it to about 90°C, and set the weight concentration to 8% The ethanol solution of N-2-(aminoethyl)-3-aminopropyltrimethoxysilane was sprayed on the powder, stirred for 1 hour, and the et...

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Abstract

The invention discloses a self-leveling mortar anti-shrinking agent and a preparation method and application thereof. The self-leveling mortar anti-shrinking agent comprises the following components in part by weight: 80 to 100 parts of bauxite, 6 to 12 parts of sodium carbonate, 0.5 to 1.5 parts of cerous chloride, 100 parts of zeolite, 10 to 15 parts of natural alunite, 40 to 50 parts of dihydrate gypsum and 1.5 to 3 parts of silane coupling agent. The self-leveling mortar anti-shrinking agent of the invention produces ettringite during the hydration and hardening of the self-leveling cement to be filled in micropores of the mortar to produce slight expansion, so that the shrinkage stress produced during the hydration of the mortar is buffered to have a remarkable anti-shrinkage effect.

Description

technical field [0001] The invention relates to an anti-shrinkage agent for self-leveling mortar. Background technique [0002] my country's economy has entered a period of rapid development, and infrastructure construction is also booming. The construction of major and mega-projects is currently at the forefront of the world. In the construction of major and major projects, self-leveling mortar, as a new technology and material in the world, has been paid more and more attention in China, and has been widely used in the construction of major and major projects. As a new technology and material, it has a very good prospect. However, self-leveling mortar is the most technically demanding and complex mortar in the mortar system. Ensuring the stability of self-leveling mortar performance is the core issue. For example, late shrinkage cracking, sand removal and other problems need new additives to solve. Various additives for concrete have flourished, but since self-leveling mo...

Claims

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Application Information

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IPC IPC(8): C04B22/14C04B103/60
Inventor 施晓旦郭和森王养臣
Owner 常熟市博海新型建材有限公司
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