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Novel concrete synergist and preparation process thereof

A concrete synergist and a new type of technology are applied to the new type of concrete synergist, the manufacturing process of the above-mentioned new type of concrete synergist, and the field of admixtures that significantly improve various properties of concrete, and can solve the problem of large slump loss and concrete dosage. Large, poor water resistance and other problems, to achieve the effect of reducing slump loss

Active Publication Date: 2015-08-19
广州基业长青新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of concrete is huge. In the concrete mix ratio, the amount of cement is extremely high. Cement production enterprises are enterprises with high energy consumption. Its production produces a large amount of greenhouse gases and emits them into the atmosphere, saving cement consumption and achieving energy saving and emission reduction. The purpose is an important strategic requirement of the country, and the current ready-mixed concrete is easy to bleed, has a large slump loss, and poor waterproof performance. The concrete reinforcement or synergist invented in the past only focuses on the strength. Bleeding, concrete slump, concrete anchorage to steel bars, concrete impermeability and water resistance, concrete anti-seawater corrosion, admixtures instead of cement, etc. have poor effects

Method used

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  • Novel concrete synergist and preparation process thereof
  • Novel concrete synergist and preparation process thereof
  • Novel concrete synergist and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The weight ratio of various synergists is as follows: anti-bleeding component 704g, reinforcing component 85g, densifying component 80g, dispersing component 60g, air-entraining component 6g, compounding component 65g. 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.

[0023] The slump loss of SY-1 test is 13mm less than that of the blank test, that is, 35.1%, the bleeding is reduced from 36.5% to 8%, the impermeability level is increased by P14, the anchorage force of steel bars is increased by 18.9%, and the chloride ion diffusion coefficient is reduced from 4.9 to 10%. 4.3, saving 40 kg per cubic concrete cement. The strength of 7 days, 28 days and 60 days is slightly higher than that of blank concrete.

[0024] The mix ratio of SY-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, 29.7%....

Embodiment 2

[0031] The specific weight ratio of various synergists is as follows: anti-bleeding component 692g, reinforcing component 105g, densifying component 70g, dispersing component 60g, air-entraining component 8g, compounding component 65g. 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.

[0032] The slump loss of SY-1 test is 18mm less than that of the blank test, that is, 50%, the bleeding is reduced from 37% to 5%, the impermeability level is increased to P22, the anchorage force of steel bars is increased by 23.5%, and the chloride ion diffusion coefficient is reduced from 4.9 It is 4.1, saving 40 kg per cubic concrete cement. The strength of 7 days, 28 days, and 60 days is significantly higher than that of blank concrete, that is, 2.2MPa, 2.7 MPa, and 3.6 MPa.

[0033] The mix ratio of SY-2 remains unchanged, 0.6% synergist is added, the test slump loss is 15mm less tha...

Embodiment 3

[0038] The weight ratio of various synergists is as follows: anti-bleeding component 718g, reinforcing component 115g, densifying component 60g, dispersing component 50g, air-entraining component 7g, compounding component 50g. 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.

[0039] The slump loss of SY-1 test is 11mm less than that of the blank test, that is, 30.6%, the bleeding is reduced from 37% to 7%, the impermeability level is increased to P19, the anchorage force of steel bars is increased by 19.5%, and the chloride ion diffusion coefficient is increased from 4.8 Reduced to 4.34, saving 40 kg per cubic concrete cement. The strength of 7 days, 28 days and 60 days is slightly higher than that of blank concrete.

[0040] The mix ratio of SY-2 remains the same, and 0.6% synergist is added, and the test slump loss is 10mm less than that of the blank test, that is, 27...

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Abstract

The invention discloses a novel concrete synergist. The percent of the components of the novel concrete synergist is 60% to 80% of anti-bleeding component, 5% to 15% of enhancement component, 2% to 20% of densification component, 0.5% to 10% of dispersion component, 0.2% to 2% of entraining component and 1% to 8% of compounding component; the anti-bleeding component contains polysaccharides and / or cellulose ether and / or polyacrylamide; the enhancement component contains ethylene glycol isopropanolamine and composition of the ethylene glycol isopropanolamine, triethanolamine and triisopropanolamine; the densification component contains nano silicon dioxide and / or colloid silicon dioxide monomers; the dispersion component contains MF and / or TCL and / or NNO; the entraining component contains sodium dodecyl benzene sulfonate and / or sodium lauryl sulfate; the compounding component is polymeric alcohol amine and / or polymer polyol, respectively. The invention further provides a preparation process of the novel concrete synergist. The novel concrete synergist and the preparation process have the flowing technical effects that 1, the strength of concrete can be enhanced; 2, the usage of cement is reduced under the same strength; 3, the permeability coefficient of chloride ions can be reduced, and the slump loss is reduced.

Description

technical field [0001] The invention relates to a novel concrete synergist, in particular to an admixture which significantly improves various properties of concrete, and belongs to the technical field of construction admixtures. The present invention also relates to the manufacturing process of the above-mentioned novel concrete synergist. Background technique [0002] At present, with the acceleration of urbanization in our country, in transportation, construction, water conservancy and other industries. The amount of concrete is huge. In the concrete mix ratio, the amount of cement is extremely high. Cement production enterprises are enterprises with high energy consumption. Its production produces a large amount of greenhouse gases and emits them into the atmosphere, saving cement consumption and achieving energy saving and emission reduction. The purpose is an important strategic requirement of the country, and the current ready-mixed concrete is easy to bleed, has a l...

Claims

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Application Information

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IPC IPC(8): C04B24/38C04B24/28C04B24/26C04B22/06
Inventor 孙林柱孙磊杨芳
Owner 广州基业长青新材料股份有限公司
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