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Concrete water-proof additive

A technology for concrete and additives, applied in the field of concrete additives, can solve the problems of high construction cost, high construction difficulty and complexity, and achieve the effects of improving slump and gripping force.

Inactive Publication Date: 2007-01-17
王衡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the problems that the existing conventional concrete has poor waterproof performance, and further brings about difficulty, complexity and high construction cost of buildings made of concrete that need to be waterproofed, and provides a concrete waterproof additive

Method used

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  • Concrete water-proof additive
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Examples

Experimental program
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Effect test

Embodiment 1

[0020] Embodiment 1: Take the construction of a mine shaft as an example.

[0021] The concrete waterproof additive is composed of the following components and weight ratio: 75% of silicon dioxide, 6% of hydroxy carboxylate, 15% of aluminum sulfate, and 4% of dispersant. The above components are mixed and ground, passed through a standard sieve with a fineness of 300 mesh, and the obtained powder is the concrete waterproof additive.

[0022] The dispersant is selected from industrial grade pull-off powder.

[0023] The hydroxycarboxylate is selected from LHG polymerized hydroxycarboxylate produced by Yichuan Pingping Chemical Building Materials Research Institute, Luoyang City, Henan Province.

[0024] Said waterproof additive is added in conventional concrete with 8% of cement consumption (weight).

[0025] A certain mine constructs 3 shafts with a minus 630 meters, and the present invention is used in No. 3 wells. Design concrete strength C30, impermeability S12. The abo...

Embodiment 2

[0037] The concrete waterproof additive is composed of the following components and weight ratio: 85% of silicon dioxide, 4% of hydroxy carboxylate, 8% of aluminum sulfate, and 3% of dispersant. The above components are mixed and ground, passed through a standard sieve with a fineness of 300 mesh, and the obtained powder is the concrete waterproof additive.

[0038] The dispersant is selected from sodium 12-16 alkylbenzene sulfonate.

[0039] The hydroxycarboxylate is selected from LHG polymerized hydroxycarboxylate produced by Yichuan Pingping Chemical Building Materials Research Institute, Luoyang City, Henan Province.

[0040] Said waterproof additive is added in conventional concrete with 10% of cement consumption (weight).

[0041] The underground coal bunker section of a certain mine is 150 meters long, with an upper mouth diameter of 6 meters, a middle diameter of 15 meters, and a lower mouth diameter of 6 meters, in the shape of a shuttle. After being built with conv...

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Abstract

A concrete waterproof additive consists of silica 62-89wt%, hydroxy carboxylate 1-12wt%, aluminium sulfate 7-21wt%, and disperser 3-5wt%. Its advantages include homogeneous solidification and low cost.

Description

technical field [0001] The invention relates to a concrete additive, in particular to a concrete waterproof additive. Background technique [0002] Concrete buildings in contact with water or soaked in water for a long time require concrete to have certain waterproof and impervious properties. For example, in the construction of deep mines and shaft concrete projects, due to passing through complex geology and many aquifers, the anti-seepage water of the project is a recognized technical problem in the mining construction industry at home and abroad. Should be greater than 5m 3 / h” requirement, it can be seen from the standard that water leakage in shaft engineering is common. Another example is reservoir dams, which are built with concrete. There are also problems of anti-leakage. Roads, railway tunnels, and subways all have concrete waterproof problems. [0003] Most of the existing concrete waterproofing additives are based on materials such as sulfate or aluminate. Due...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B22/06C04B22/14C04B24/06C04B24/20
Inventor 王衡
Owner 王衡
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