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High-impermeability cement

A technology of impermeability and cement, applied in the field of cement, can solve the problems of easy loosening of cement raw material particles, increase of moisture content in cement, insufficient cement compaction, etc., achieve smooth surface, improve impermeability and weather resistance Good results

Inactive Publication Date: 2019-06-07
TONGLING SHANGFENG CEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, after the cement produced in the market is made into cement slurry, the adsorption between the constituent particles of the cement raw material is not strong, so that the cement raw material particles are prone to loosening, resulting in insufficient compactness of the cement. When the cement is exposed to the external environment for a long time, water stains will gradually penetrate into the interior of the cement, which will increase the moisture content inside the cement, and seriously affect the strength of the cement

Method used

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  • High-impermeability cement

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Experimental program
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Effect test

Embodiment 1

[0027] refer to figure 1 , a cement with high impermeability, comprising the following raw materials in parts by weight: 40-50 parts of cement clinker, 10-15 parts of coal ore, 10-15 parts of black waste residue, 5-10 parts of gypsum powder, and 5 parts of steel slag powder -10 parts, 2-8 parts of silicon powder and 5 parts of mixed additives.

[0028] Cement clinker is composed of limestone, clay and quality raw materials, among which, limestone, clay and quality raw materials are formulated into raw meal in a ratio of 5:4:1, which is a semi-finished product obtained by burning until partially or completely melted and cooled.

[0029] The mixed additive is composed of air-entraining agent and polyvinyl alcohol fiber, wherein the air-entraining agent and polyvinyl alcohol fiber are mixed in a ratio of 6:4.

[0030] The raw materials of the air-entraining agent are mainly composed of rosin resins, alkyl and alkyl aromatic hydrocarbon sulfonic acids, fatty alcohol sulfonates, s...

Embodiment 2

[0042] refer to figure 1 , a cement with high impermeability, comprising the following raw materials in parts by weight: 40-50 parts of cement clinker, 10-15 parts of coal ore, 10-15 parts of black waste residue, 5-10 parts of gypsum powder, and 5 parts of steel slag powder -10 parts, 2-8 parts of silicon powder and 7.5 parts of mixed additives.

[0043] Cement clinker is composed of limestone, clay and quality raw materials, among which, limestone, clay and quality raw materials are formulated into raw meal in a ratio of 5:4:1, which is a semi-finished product obtained by burning until partially or completely melted and cooled.

[0044] The mixed additive is composed of air-entraining agent and polyvinyl alcohol fiber, wherein the air-entraining agent and polyvinyl alcohol fiber are mixed in a ratio of 6:4.

[0045] The raw materials of the air-entraining agent are mainly composed of rosin resins, alkyl and alkyl aromatic hydrocarbon sulfonic acids, fatty alcohol sulfonates,...

Embodiment 3

[0057] refer to figure 1 , a cement with high impermeability, comprising the following raw materials in parts by weight: 40-50 parts of cement clinker, 10-15 parts of coal ore, 10-15 parts of black waste residue, 5-10 parts of gypsum powder, and 5 parts of steel slag powder -10 parts, 2-8 parts of silicon powder and 10 parts of mixed additives.

[0058] Cement clinker is composed of limestone, clay and quality raw materials, among which, limestone, clay and quality raw materials are formulated into raw meal in a ratio of 5:4:1, which is a semi-finished product obtained by burning until partially or completely melted and cooled.

[0059] The mixed additive is composed of air-entraining agent and polyvinyl alcohol fiber, wherein the air-entraining agent and polyvinyl alcohol fiber are mixed in a ratio of 6:4.

[0060] The raw materials of the air-entraining agent are mainly composed of rosin resins, alkyl and alkyl aromatic hydrocarbon sulfonic acids, fatty alcohol sulfonates, ...

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Abstract

The invention discloses a high-impermeability cement. The cement comprises, by weight, a cement clinker, coal ores, black waste residues, gypsum powder, steel slag powder, silicon powder and a mixed additive. Added polyvinyl alcohol fibers have the characteristics of high strength, good wear resistance, good acid and alkali resistance and good weather resistance, and can completely wrap cement rawmaterial particles during contact adsorption with the cement raw materials, so the adsorption capacity among cement mortar particles is enhanced when water is added to the cement to prepare a cementmortar, and almost no gaps exist among the cement raw material particles, thereby the tightness of the cement particles is greatly improved; and addition of an air entraining agent can effectively empty bubble gaps reserved among the cement particles, so the tightness of the cement particles is further enhanced, water spots are prevented from entering the cement under the action of a pressure andcausing leakage inside the cement, and the use effect of the cement is improved.

Description

technical field [0001] The invention relates to the technical field of cement, in particular to cement with high impermeability. Background technique [0002] Cement is a powdery hydraulic inorganic gelling material. It can be mixed with water to form a slurry. It can be hardened in the air or better hardened in water, and can firmly bond sand, stone and other materials together. Concrete made of crushed stone not only has high strength after hardening, but also can resist the erosion of fresh water or salt water. For a long time, it has been used as an important cementing material and is widely used in civil engineering, water conservancy, national defense and other projects. [0003] However, after the cement produced in the market is made into cement slurry, the adsorption between the constituent particles of the cement raw material is not strong, so that the cement raw material particles are prone to loosening, resulting in insufficient compactness of the cement. When t...

Claims

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Application Information

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IPC IPC(8): C04B7/24C04B7/36
CPCY02P40/10
Inventor 叶挺钢徐瞒张茂鹍王东
Owner TONGLING SHANGFENG CEMENT CO LTD
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