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Inorganic cement retarder

A cement retarder and inorganic technology, applied in the field of inorganic cement retarders, can solve the problems of concrete strength, shrinkage and the effect of frost resistance and durability.

Inactive Publication Date: 2019-03-05
王宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After adding retarder, it will affect the strength, shrinkage and frost resistance durability of concrete, but its frost resistance durability is similar to that of unmixed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] An inorganic cement retarder, raw materials include by weight: polyacrylic acid 30Kg, sodium citrate 5Kg, edetate disodium magnesium 6Kg, baking soda 6Kg, iron powder 3Kg, lime 7Kg, urea 1Kg.

Embodiment 2

[0015] An inorganic cement retarder, raw materials include by weight: polyacrylic acid 36Kg, sodium citrate 8Kg, edetate disodium magnesium 8Kg, baking soda 6Kg, iron powder 3Kg, lime 8Kg, urea 2Kg.

Embodiment 3

[0017] An inorganic cement retarder, raw materials include by weight: polyacrylic acid 39Kg, sodium citrate 9Kg, edetate disodium magnesium 9Kg, baking soda 7Kg, iron powder 5Kg, lime 9Kg, urea 3Kg.

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PUM

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Abstract

The invention belongs to the field of building materials, and provides an inorganic cement retarder. The inorganic cement retarder comprises the following raw materials in parts by weight: 30-40 partsof poly acrylic vinyl acid, 5-10 parts of sodium citrate, 5-10 parts of an ethylene diamine tetraacetic acid disodium magnesium salt, 5-10 parts of sodium bicarbonate,3-5 parts of iron powder, 5-10 parts of lime and 1-3 parts of urea. The technology is simple, economical and practical, and is convenient to popularize and use. The hydration hardening time of cement can be effectively prolonged, plasticity of newly-mixed concrete is kept, the condensation time of the newly-mixed concrete is adjusted, and good slump and fluidity of the newly-mixed concrete are kept.

Description

technical field [0001] The invention belongs to the field of building materials and provides an inorganic cement retarder. Background technique [0002] The purpose of adding retarder in commercial concrete is to prolong the hydration and hardening time of cement, so that fresh concrete can maintain plasticity for a long time, thereby adjusting the setting time of fresh concrete. The strength, shrinkage and frost resistance durability of concrete will be affected after adding retarder, but its frost resistance durability is similar to that without mixing. Contents of the invention [0003] The purpose of the present invention is to improve the retarding effect of commercial concrete, and proposes an inorganic cement retarder. [0004] Technical solutions [0005] In order to realize the above-mentioned purpose of the invention, the present invention provides the following technical solutions: [0006] An inorganic cement retarder, raw materials include by weight: 30-4...

Claims

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Application Information

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IPC IPC(8): C04B24/26C04B103/22
CPCC04B40/0039C04B2103/22C04B24/2641C04B24/06C04B24/123C04B22/10C04B22/04C04B24/126C04B22/064
Inventor 王宁
Owner 王宁