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A kind of polymer modified cement-based waterproof mortar

A waterproof mortar and cement-based technology, which is applied in the field of polymer modified cement-based waterproof mortar, can solve the problems of reduced compressive strength, shrinkage rate, high polymer price, and increased cement mortar price and cost, and achieves improved pore structure, good Economic and social benefits, low shrinkage effect

Inactive Publication Date: 2017-09-19
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, the problems of greatly reduced compressive strength and large shrinkage cannot be solved; secondly, the polymer is expensive, and the addition of polymer leads to an increase in the price and cost of cement mortar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A polymer-modified cement-based waterproof mortar, which is composed of the following raw materials in parts by mass: 200 parts of rapid-hardening sulphoaluminate cement, 50 parts of Portland cement, 30 parts of ultrafine mineral powder, 180 parts of stone powder, 300 parts Part diatomite, 5 parts calcium sulfoaluminate expansion agent, 20 parts butadiene-styrene copolymer emulsion, 0.8 part fatty acid polyether derivative, 250 parts water, 200 parts sand.

[0027] Said, the solid content of the butadiene-styrene copolymer emulsion is 50-52%, the minimum film forming temperature is 14°C, and the viscosity is 300mPa·s.

[0028] As mentioned, the specific surface area of ​​ultrafine mineral powder is 600kg / m 2 , average particle size 3μm.

[0029] As mentioned above, stone powder is a large amount of waste piled up in quarries with a particle size of less than 75 μm and an average particle size of 20 μm.

[0030] Said diatomite has a particle size of 800 mesh and is cal...

Embodiment 2

[0034] Preferably, a polymer modified cement-based waterproof mortar is composed of the following raw materials in parts by mass: 150 parts of rapid hardening sulfoaluminate cement, 65 parts of Portland cement, 45 parts of ultrafine mineral powder, 130 parts Stone powder, 240 parts of diatomite, 3 parts of calcium sulfoaluminate expansion agent, 35 parts of butadiene-styrene copolymer emulsion, 0.5 part of fatty acid polyether derivative, 170 parts of water, 400 parts of sand.

[0035] Said, the solid content of the butadiene-styrene copolymer emulsion is 50-52%, the minimum film forming temperature is 14°C, and the viscosity is 200mPa·s.

[0036] As mentioned, the specific surface area of ​​ultrafine mineral powder is 800kg / m 2 , average particle size 3μm.

[0037] As mentioned above, stone powder is a large amount of waste piled up in quarries with a particle size of less than 75 μm and an average particle size of 20 μm.

[0038] Said diatomite has a particle size of 800 m...

Embodiment 3

[0042] A polymer-modified cement-based waterproof mortar, which is composed of the following raw materials in parts by mass: 100 parts of rapid-hardening sulphoaluminate cement, 80 parts of Portland cement, 60 parts of ultrafine mineral powder, 80 parts of stone powder, 180 parts Parts of diatomaceous earth, 2 parts of calcium sulfoaluminate expansion agent, 50 parts of butadiene-styrene copolymer emulsion, 0.1 part of fatty acid polyether derivative, 100 parts of water, 600 parts of sand.

[0043] Said, the solid content of the butadiene-styrene copolymer emulsion is 50-52%, the minimum film-forming temperature is 14°C, and the viscosity is 50mPa·s.

[0044] As mentioned, the specific surface area of ​​ultrafine mineral powder is 1000kg / m 2 , average particle size 3μm.

[0045] As mentioned above, stone powder is a large amount of waste piled up in quarries with a particle size of less than 75 μm and an average particle size of 20 μm.

[0046] Said diatomite has a particle ...

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Abstract

The invention discloses polymer modified cement-based waterproof mortar. The mortar comprises raw materials in parts by mass as follows: 100-200 parts of quick-hardening sulphate aluminum cement, 50-80 parts of Portland cement, 30-60 parts of superfine mineral powder, 80-180 parts of stone powder, 180-300 parts of diatomite, 2-5 parts of an expanding agent, 20-50 parts of a butyldiphenyl-styrene copolymer emulsion, 0.1-0.8 parts of a defoaming agent, 100-250 parts of water and 200-600 parts of sand. The polymer modified cement-based waterproof mortar has higher compressive strength and bonding strength, low shrinking percentage and good anti-permeability performance and completely meets the requirements of JC / T 984-2011 polymer cement waterproof mortar.

Description

technical field [0001] The invention relates to a polymer-modified cement-based waterproof mortar, which belongs to the technical field of energy-saving and environment-friendly building materials. Background technique [0002] At present, the old buildings in China are old, a large number of buildings are aging, and there are phenomena such as leakage and seepage in buildings. Polymerized modified cement-based waterproof mortar has good impermeability and improves the toughness of cement-based materials, and has been widely used in repairing marine concrete construction projects in recent years. Secondly, polymer-modified cement-based materials have good fluidity and water retention rate, so polymer-modified cement-based materials have broad prospects in the field of building waterproof materials. But adding polymer modified cement-based materials also has many problems. First of all, the problems of greatly reduced compressive strength and large shrinkage rate cannot be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06C04B111/27
CPCC04B28/06C04B2111/27C04B2201/50C04B7/02C04B14/02C04B18/12C04B14/08C04B22/142C04B24/2676C04B24/32C04B14/06
Inventor 芦令超孙科科宫晨琛王守德赵丕琪
Owner UNIV OF JINAN