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Cement concrete inner-doping waterproof agent and preparing method thereof

A technology of cement concrete and waterproofing agent, which is applied in the direction of sustainable waste treatment, solid waste management, and climate sustainability. It can solve the problems of affecting the early strength of concrete, easy moisture absorption failure, and poor waterproofing effect, so as to reduce permeability and electric flux, improve the compactness of concrete, and reduce the effect of water absorption

Active Publication Date: 2016-06-22
JIANGSU SOBUTE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The existing built-in cement concrete waterproofing agent has problems such as affecting the early strength of concrete, poor waterproofing effect, and is easy to absorb moisture and fail during storage; in view of the various limitations of these existing built-in cement concrete waterproofing agents, this paper The invention proposes a kind of waterproofing agent mixed in cement concrete, which can improve the early strength and super early strength of concrete; it can further improve the waterproof performance of cement concrete, reduce water absorption and electric flux, improve the durability of concrete, and help to prolong the life of concrete. service life of the structure

Method used

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  • Cement concrete inner-doping waterproof agent and preparing method thereof
  • Cement concrete inner-doping waterproof agent and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 0.1 part of Tween-80 and 0.1 part of Span-80, dissolve and disperse with appropriate water, add 0.2 part of octyltriethoxysilane, stir at 25°C for 1 hour to form a dispersion; add 0.2 part of specific surface area 50m 2 / g of aluminum oxide nanopowder and 0.05 parts specific surface area is 400m 2 / g silica, 0.05 parts specific surface area is 0.01m 2 / g fly ash, after stirring for 20min, make up the remaining water to obtain waterproofing agent 1.

Embodiment 2

[0027] Weigh 1 part of Tween-60, dissolve and disperse with appropriate water, add 1 part each of stearic acid and dodecyltrimethoxysilane, heat up to 100°C, stir for 2 hours to form a dispersion; cool the above dispersion to 35°C, add 2 parts with a specific surface area of ​​10m 2 / g of aluminum oxide nanopowder, 3 parts with a specific surface area of ​​50m 2 / g calcium carbonate and 1 part specific surface area is 5m 2 / g fly ash, after stirring for 10min, make up the remaining water to obtain waterproofing agent 2.

Embodiment 3

[0029] Weigh 1 part of Tween-20 and 1 part of Span-60, dissolve and disperse with appropriate water, add 5 parts of zinc stearate and 5 parts of lauryl alcohol, heat up to 85°C and stir for 1 hour to form a dispersion; cool down After reaching 45°C, add 10 parts with a specific surface area of ​​150m 2 / g of aluminum oxide nanopowder and 5 parts with a specific surface area of ​​0.02m 2 / g silica, 5 parts specific surface area is 0.5m 2 / g fly ash, after stirring for 60min, make up the remaining water to obtain waterproofing agent 3.

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Abstract

The invention provides a cement concrete inner-doping waterproof agent and a preparing method thereof. The cement concrete inner-doping waterproof agent is prepared from, by weight, 0.2-20% of nano aluminum oxide, 0.1-20% of a filer component, 0.1-20% of a hydrophobic component, 0.2-5% of emulsifier and the balance water. The cement concrete inner-doping waterproof agent has the advantages of early high strength, expansibility, hydrophobicity, permeability reduction, electric flux and the like.

Description

technical field [0001] The invention belongs to the technical field of cement concrete admixtures in the building material industry, and in particular relates to a cement concrete built-in waterproofing agent and a preparation method thereof. technical background [0002] Cement concrete is the most used building material in the world today, and is widely used in municipal, bridge, road and other projects. In outdoor projects in contact with water (such as rain, snow, etc.) and long-term immersion (underground engineering, dams, bridges, etc.), the waterproof requirements of cement concrete are relatively high; due to its porosity and hydration characteristics, cement concrete The structure has high permeability. On the other hand, the transmission of various harmful media in the cement concrete structure is inseparable from the participation of water, such as the corrosion of the steel bars in the concrete structure caused by the penetration of chloride ions with water, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B24/28C04B14/30C04B14/06C04B18/08C04B14/28C04B24/04C04B24/08C04B103/65
CPCC04B40/0039C04B2103/65C04B24/281C04B24/42C04B14/06C04B18/08C04B14/303C04B14/28C04B24/085C04B24/02Y02W30/91
Inventor 王瑞王洪松崔巩李磊周华新
Owner JIANGSU SOBUTE NEW MATERIALS
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