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Additive for saltresistance series concrete

A technology of concrete admixture and admixture, which is applied in the field of additives, can solve problems such as no records, and achieve the effects of simple preparation, sufficient raw materials, and improved frost resistance

Inactive Publication Date: 2005-11-09
QINGHAI UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many types and varieties of concrete admixtures in China, but there are no records of anti-corrosion admixtures for concrete structure engineering in salt lake areas and saline soil areas.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Anti-corrosion and water-reducing type I anti-salinization concrete admixture made of the following raw materials in percentage by weight: 80% β-naphthalene sulfonate sodium formaldehyde condensation polymer; 12.5% ​​sodium sulfate; rosin Thermopolymer 2.0%; Sodium Fluorosilicate 1.5%; Silicone 2.0%; Defoamer 1.0%; Sodium Nitrite + Sodium Sulfate 1.0%.

Embodiment 2

[0010] The slow-setting, anti-corrosion and water-reducing type II salt-resistant concrete admixture is made from the following raw materials in percentage by weight: 87.5% of sodium formaldehyde condensation polymer of beta-naphthalene sulfonate; 1.5% of magnesium powder; 2.0% of alkylbenzene sulfonate Sodium Fluosilicate 2.5%; Triethanolamine 1.5%; Silicone 1.0%; Defoamer 1.0%; Sodium Nitrite + Sodium Sulfate 1.0%;

Embodiment 3

[0012] Antifreeze, anti-seepage, anti-salt corrosion type III anti-salt concrete admixture is made of the following raw materials in percentage by weight: 85% of sodium formaldehyde polycondensate of β-naphthalene sulfonate; 5.5% of sodium sulfate; 1.5% of rosin thermal polymer %; alkylbenzene sulfonate 1.5%; sodium fluorosilicate 1.5%; silicone 2.0%; defoamer 1.0%; calcium chloride 1.0%; sodium nitrite + sodium sulfate 1.0%.

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PUM

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Abstract

An additive for preparing the saline-resistant concrete able also to resist against freezing, osmosis and corrosion is proportionally prepared from sodium beta-nephthalenesulfonate-formaldehyde polycondensate, sodium sulfate, rosin thermopolymer, magnesium powder, alkylphenyl sulfonate, sodium fluorosilicate, triethanolamine, sodium nitrite plus sodium sulfate, and hydroxycarboxylic acid.

Description

technical field [0001] The present invention relates to an additive, in particular to an admixture for preparing salt corrosion resistant concrete. Background technique [0002] As we all know, the development and utilization of salt lake resources is one of the key points of western development in the 21st century. Concrete has been widely used in engineering structures such as bridges, tunnels, production plants and office buildings for railways and highways in salt lake areas and saline soil areas. The serious corrosion of concrete by various salts in the salt lake area has aroused great concern in the engineering field. How to use anti-corrosion admixtures and mineral admixtures to prepare concrete with high anti-corrosion performance is of great significance to the high durability, safety and service life of engineering structures. At present, there are many types and varieties of concrete admixtures in China, but there are no records of anti-co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/22
Inventor 刘连新黄梓平王潘劳张伟勤戴大虎
Owner QINGHAI UNIVERSITY