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Chloridion-corrosion resistant concrete synergist and production technology thereof

A technology of concrete synergist and chloride ion corrosion, applied in the production process of concrete synergist, concrete synergist, significantly improving the anti-seawater corrosion of concrete and improving the comprehensive performance of concrete in the field of admixtures, which can solve the loss of slump Large, anti-chloride ion performance, corrosion resistance, poor seepage and water resistance, endangering the safety of large structures, etc., to achieve the effect of reducing slump loss

Active Publication Date: 2015-08-26
株洲市中建新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, my country's coastal and tidal reclamation areas are very large, and large-scale water conservancy projects, municipal engineering, traffic engineering, and construction projects need to be built on coastal and beach reclamation. Due to the presence of a large amount of chloride ions and corrosive substances in seawater and tidal flats, it is harmful to concrete. Severe corrosion occurs, which seriously affects the durability of concrete engineering and endangers the safety of large structures. The conventionally used ready-mixed concrete has poor corrosion resistance to chloride ions, easy bleeding, large slump loss, and low waterproof performance. Concrete's chloride ion resistance, corrosion resistance, bleeding, concrete slump, concrete impermeability and water resistance, and admixtures instead of cement have poor effects. How to reduce the corrosion of chloride ions on concrete and steel bars and improve the corrosion resistance of concrete Performance, improving concrete strength, anti-bleeding, reducing slump loss, and reducing cement consumption have become a topic

Method used

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  • Chloridion-corrosion resistant concrete synergist and production technology thereof
  • Chloridion-corrosion resistant concrete synergist and production technology thereof
  • Chloridion-corrosion resistant concrete synergist and production technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The weight ratio of various substances in the synergist is as follows: anti-bleeding component 709g, anti-seepage and waterproof component 100g, reinforcing component 80g, dispersing component 60g, air-entraining component 6g, compounding component 45g. Mix and stir to make a synergist. The dosage of synergist is 0.6%, and the test is carried out according to Table 1, and the results are shown in Table 2.

[0020] The slump loss in the MY-1 test is 13mm less than that in the blank test, that is, 34.2%, the bleeding is reduced from 38% to 10%, the impermeability level is increased by P18, the chloride ion diffusion coefficient is reduced from 5.1 to 4.2, and the cement is saved per cubic meter of concrete. 40 kg. The 28-day strength is slightly higher than that of blank concrete.

[0021] The mix ratio of MY-2 remains unchanged, and 0.6% synergist is added, and the test slump loss is 11mm less than that of the blank test, that is, 28.9%.

[0022] Bleeding was reduced ...

Embodiment 2

[0027] The weight ratio of various substances in the synergist is as follows: anti-bleeding component 717g, anti-seepage and waterproof component 85g, reinforcing component 95g, dispersing component 50g, air-entraining component 8g, compounding component 45g. Mix and stir to make a synergist. The dosage of synergist is 0.6%, and the test is carried out according to Table 1, and the results are shown in Table 3.

[0028] The slump loss of the MY-1 test is 18mm less than that of the blank test, which is 45%, the bleeding is reduced from 39% to 12%, the impermeability level is increased to P17, and the chloride ion diffusion coefficient is reduced from 5.2 to 4.3. Saved 40 kg. The 28-day strength is significantly higher than that of blank concrete.

[0029] The mix ratio of MY-2 remains the same, 0.6% synergist is added, the test slump loss is 16mm less than that of the blank test, that is, 40%, the bleeding is reduced from 39% to 2%, the impermeability level is increased to P2...

Embodiment 3

[0034] The weight ratio of various substances in the synergist is as follows: anti-bleeding component 665g, anti-seepage and waterproof component 150g, reinforcing component 105g, dispersing component 40g, air-entraining component 10g, compounding component 30g. Mix and stir to make a synergist. The dosage of synergist is 0.6%, and the test is carried out according to Table 1, and the results are shown in Table 3.

[0035] The slump loss of the MY-1 test is 12mm less than that of the blank test, that is, 31.6%, the bleeding is reduced from 38% to 6%, the impermeability level is increased to P24, and the chloride ion diffusion coefficient is reduced from 5.1 to 4.1. Cement saved 40 kg. The 28-day strength is significantly higher than that of blank concrete.

[0036] The mix ratio of MY-2 remains unchanged, and 0.6% synergist is added, and the test slump loss is 11mm less than that of the blank test, that is, 28.9%.

[0037] Bleeding is reduced from 38% to 0%, the impermeabil...

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Abstract

The invention discloses a chloridion-corrosion resistant concrete synergist. The component percentage is anti-bleeding component : anti-permeability waterproof component : enhancing component : dispersing component : entraining component : coordinating component; the anti-bleeding component comprises polysaccharide and / or cellulose ether and / or polyacrylamide, the anti-permeability waterproof component comprises methyl sodium silicate and / or organosilicon waterproofing agent, the enhancing component comprises glycol monoisopropanolamine, composition of the glycol monoisopropanolamine and triethanolamine and triisopropanol, the dispersing component comprises MF and / or TCL and / or NNO, the entraining component comprises dodecyl benzene acid sodium and / or dodecyl benzene sodium sulfate, and the coordinating component comprises polymeric alcohol amine and polymeric polyhydric alcohol. The invention further provides a production technology for the chloridion-corrosion resistant concrete synergist. The chloridion-corrosion resistant concrete synergist is capable of improving the concrete strength, reducing the bleeding rate and reducing the slump loss.

Description

technical field [0001] The invention relates to a concrete synergist for anti-chloride ion corrosion, in particular to an admixture for significantly improving the anti-seawater corrosion of concrete and improving the comprehensive performance of concrete, belonging to the technical field of building admixtures. The invention also relates to a production process of the concrete synergist for resisting chloride ion corrosion. Background technique [0002] At present, my country's coastal and tidal reclamation areas are very large, and large-scale water conservancy projects, municipal engineering, traffic engineering, and construction projects need to be built on coastal and beach reclamation. Due to the presence of a large amount of chloride ions and corrosive substances in seawater and tidal flats, it is harmful to concrete. Severe corrosion occurs, which seriously affects the durability of concrete engineering and endangers the safety of large structures. The conventionally ...

Claims

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Application Information

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IPC IPC(8): C04B24/42C04B24/38
Inventor 孙林柱孙磊杨芳
Owner 株洲市中建新材料有限公司
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