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Self-waterproof sulphoaluminate cement and preparation method of concrete by using self-waterproof sulphoaluminate cement

A water sulfoaluminate and cement technology, which is applied in the field of construction, can solve the problems of restricting the popularization and application of foam concrete materials, improper material proportioning, high water absorption, etc., and achieve the effects of increased strength, high chemical reaction temperature and long duration

Active Publication Date: 2012-12-05
ZHEJIANG BADA CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the chemical characteristics of the components of the low-alkalinity sulphoaluminate cement, the existing foamed concrete products have the disadvantages of low strength, large shrinkage and high water absorption.
These shortcomings limit the popularization and application of foam concrete materials
The factors that lead to these shortcomings include improper material ratio and construction technology.

Method used

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  • Self-waterproof sulphoaluminate cement and preparation method of concrete by using self-waterproof sulphoaluminate cement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Take the raw material according to the following parts by weight:

[0043] Clinker: 85 parts, fly ash: 10 parts, quicklime: 4 parts, higher fatty acid: 1 part, basic compound: 2 parts, methyl silicate: 1.5 parts, calcium stearate: 1 part, silica fume : 5 parts, polypropylene fiber: 0.8 parts, water: 120 parts, hydrogen peroxide: 6 parts.

[0044] Described higher fatty acid is industrial stearic acid;

[0045] The basic compound is flaky sodium hydroxide;

[0046] Described polypropylene fiber length 10mm;

[0047] The temperature of the water is 50°C;

[0048] The concentration of described hydrogen peroxide is 27%.

[0049]The production process of self-waterproof sulfoaluminate cement is as follows: firstly, limestone, high-iron bauxite tailings (when bauxite is selected, it needs to be evenly matched with pyrite slag or lead-zinc slag in a certain proportion), and anhydrite after crushing Put it into the raw material storage, and then mix the ingredients accord...

Embodiment 2

[0054] Embodiment 2 takes raw materials according to the following parts by weight:

[0055] Clinker: 70 parts, fly ash: 20 parts, quicklime: 2 parts, higher fatty acid: 1 part, basic compound: 2 parts, methyl silicate: 1.5 parts, calcium stearate: 1.5 parts, silica fume : 2 parts, polypropylene fiber: 0.7 parts, water: 110 parts, hydrogen peroxide: 6 parts.

[0056] Described higher fatty acid is industrial stearic acid;

[0057] The basic compound is flaky sodium hydroxide;

[0058] Described polypropylene fiber length 10mm;

[0059] The temperature of the water is 55°C;

[0060] The concentration of described hydrogen peroxide is 27%.

[0061] The production process of self-waterproof sulfoaluminate cement is as follows: firstly, limestone, high-iron bauxite tailings (when bauxite is selected, it needs to be evenly matched with pyrite slag or lead-zinc slag in a certain proportion), and anhydrite after crushing Put it into the raw material storage, and then mix the ing...

Embodiment 3

[0066] Embodiment 3 takes raw materials according to the following parts by weight:

[0067] Clinker: 55 parts, fly ash: 35 parts, quicklime: 2 parts, higher fatty acid: 0.5 parts, basic compound: 0.5 parts, methyl silicic acid: 0.5 parts, calcium stearate: 3 parts, silica fume : 1 part, polypropylene fiber: 0.5 parts, water: 70 parts, hydrogen peroxide: 5 parts.

[0068] Described higher fatty acid is industrial stearic acid;

[0069] The basic compound is flaky sodium hydroxide;

[0070] Described polypropylene fiber length 6mm;

[0071] The temperature of the water is 60°C;

[0072] The concentration of described hydrogen peroxide is 27%.

[0073] The production process of self-waterproof sulfoaluminate cement is as follows: firstly, limestone, high-iron bauxite tailings (when bauxite is selected, it needs to be evenly matched with pyrite slag or lead-zinc slag in a certain proportion), and anhydrite after crushing Put it into the raw material storage, and then mix the...

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Abstract

The invention discloses self-waterproof sulphoaluminate cement, which is prepared by using the following components in parts by weight: 55-85 parts of clinker, 10-35 parts of pulverized coal ash, 1-4 parts of lime, 0.5-1 part of higher aliphatic acid, 0.5-2 parts of alkali compound, 0.5-1.5 parts of methane siliconic acid, 0.5-3 parts of calcium stearate and 1-5 parts of micro silicon powder. During the preparation of the cement, hydrophobic fatty acid salt and methane silicate are produced, and the hydrophobic substances are adsorbed on the surfaces of the pulverized coal ash, the micro silicon powder, the cement and hydrated substances. At the same time, the pulverized coal ash and the micro silicon powder can fill internal pores and micro cracks through filling and chemical reaction after the cement is solidified, so the goals of realizing self-waterproof performance and improving cement product strength are achieved.

Description

technical field [0001] The invention relates to the construction field, in particular to a self-waterproof sulphoaluminate cement and a preparation method thereof and a preparation method thereof. Background technique [0002] Insulation materials in building energy-saving and thermal insulation projects are divided into two categories: organic and inorganic materials, and organic materials are extremely prone to fire. Therefore, inorganic material foamed concrete panels have begun to be used in some projects. Foamed concrete slabs can adopt two methods of physical foaming (such as application number CN102153364A) and chemical foaming. Physical foaming is relatively simple, but the bulk density of the board is relatively large, usually used at 300kg / m 3 Above; chemically foamed foamed concrete has a self-weight of 180-350kg / m 3 , relatively light, and the thermal conductivity is close to polystyrene board, more and more applications in engineering. [0003] At present, low...

Claims

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Application Information

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IPC IPC(8): C04B7/32C04B28/06
Inventor 岳建伟孙占利段海涛毛国华冷灯华
Owner ZHEJIANG BADA CONSTR GRP