High-performance inorganic alkali-free chlorine-free waterproof anti-cracking agent

A high-performance, inorganic technology, applied in the field of cement concrete waterproof, moisture-proof and anti-cracking agent, can solve the problems of difficult passivation film, unstable passivation film, and destruction of passivation film.

Inactive Publication Date: 2005-09-21
廖志伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the pH<11.5, the passivation film begins to be unstable (critical value); when the pH<9.88, the passivation film is difficult to form or the passivation film that has already been formed is gradually destroyed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] High-performance inorganic, alkali-free, chlorine-free, waterproof, moisture-proof, and crack-resistant. It is composed of two kinds of compositions used in conjunction. + 、Na + Chemical raw materials.

[0038] The first composition consists of Al 2 (SO 4 ) 3 , FeSO 4 ·7H 2 O, Co(NH 2 ) 2 、CuSO 4 ·5H 2 O, water composition, the weight percent of each component is:

[0039] al 2 (SO 4 ) 3 10,

[0040] FeSO 4 ·7H 2 O 45,

[0041] Co(NH 2 ) 2 0.1,

[0042] Food grade CuSO 4 ·5H 2 O 0.1,

[0043] water 44.8;

[0044] The second composition includes Al 2 (SO 4 ) 3 , triethanolamine, FeSO 4 ·7H 2 O, calcium stearate, CuSO 4 ·5H 2 O, CaCO 3 , water, the weight percent of each component is:

[0045] al 2 (SO 4 ) 3 10,

[0046] Triethanolamine 16,

[0047] FeSO 4 ·7H 2 O 0.1,

[0048] ...

Embodiment 2

[0054] High-performance inorganic, alkali-free, chlorine-free, waterproof, moisture-proof, and crack-resistant. It is composed of two kinds of compositions used in conjunction. + 、Na + Chemical raw materials.

[0055] The first composition consists of Al 2 (SO 4 ) 3 , FeSO 4 ·7H 2 O, Co(NH 2 ) 2 、CuSO 4 ·5H 2 O, water composition, the weight percent of each component is:

[0056] al 2 (SO 4 ) 3 45,

[0057] FeSO 4 ·7H 2 O 1,

[0058] Co(NH 2 ) 2 1,

[0059] Food grade CuSO 4 ·5H 2 O 1,

[0060] water 52;

[0061] The second composition includes Al 2 (SO 4 ) 3 , triethanolamine, FeSO 4 ·7H 2 O, calcium stearate, CuSO 4 ·5H 2 O, CaCO 3 , water, the weight percent of each component is:

[0062] al 2 (SO 4 ) 3 50,

[0063] Triethanolamine 2,

[0064] FeSO 4 ·7H 2 O 1,

[0065] Ca...

Embodiment 3

[0071] High-performance inorganic, alkali-free, chlorine-free, waterproof, moisture-proof, and crack-resistant. It is composed of two kinds of compositions used in conjunction. + 、Na + Chemical raw materials.

[0072] The first composition (mortar type) consists of Al 2 (SO 4 ) 3 , FeSO 4 ·7H 2 O, Co(NH 2 ) 2 、CuSO 4 ·5H 2 O, water composition, the weight percent of each component is:

[0073] Al 2 (SO 4 ) 3 20,

[0074] FeSO 4 ·7H 2 O 20,

[0075] Co(NH 2 ) 2 10,

[0076] Food grade CuSO 4 ·5H 2 O10,

[0077] water 40;

[0078] The second composition (concrete type) consists of Al 2 (SO 4 ) 3 , triethanolamine, FeSO 4 ·7H 2 O, calcium stearate, urea, CuSO 4 ·5H 2 O, CaCO 3 , water composition, the weight percent of each component is:

[0079] Al 2 (SO 4 ) 3 10,

[0080] Triethanolamine 2,

[0081] FeSO...

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PUM

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Abstract

The invention relates to a cement water-proof damp-proof agent comprising two matching compositions, wherein the the first composition consists of Al2(So4)3, FeSO4*7H2O, Co(NH2)2, CuSO4*5H2O and water, the second composition consists of Al2(SO4)3, triethanolamine, FeSO4*7H2O, calcium stearate, urea, CuSO4*5H2O, CaCO3 and water. The advantages of the invention include water-proof, anticracking and high reliability in moisture protection.

Description

technical field [0001] The invention relates to a waterproof, moisture-proof and anti-cracking agent for cement concrete in various construction projects and water conservancy projects. Background technique [0002] In actual engineering, many roads and bridges cannot reach the designed service life, and some of them have only been used for a few years and have been seriously damaged, so they need to be repaired on a large scale. Practice has proved that Cl - It is an important reason for the deterioration of the durability of roads, bridges and other structures, and now many cement concrete admixtures such as waterproofing agents, plugging agents, early strength agents, and water reducing agents contain a lot of Cl - , when mixed into cement concrete, it will accelerate the corrosion of steel bars and lead to cracking and damage of cement concrete. [0003] Cl - The corrosion effect on the steel bars inside the concrete is multifaceted, including: (1) destroying the pass...

Claims

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Application Information

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IPC IPC(8): C04B22/08C04B22/14C04B24/08C04B24/12
Inventor 廖志伟
Owner 廖志伟
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