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WHDF-type water-reducing, seepage-proof and crack-resistant agent for concrete

A technology of concrete and anti-cracking agent, which is applied in the field of concrete to achieve the effect of enhancing the ability to resist cracking, good anti-cracking and anti-seepage performance, and improving mechanical properties

Active Publication Date: 2012-06-13
武汉天衣新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to propose a WHDF type concrete water-reducing, anti-seepage and anti-crack agent for the above-mentioned prior art, which has good anti-crack and anti-seepage performance, is not easy to age, has low cost, and simplifies the construction process. Avoid admixture compatibility issues

Method used

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  • WHDF-type water-reducing, seepage-proof and crack-resistant agent for concrete
  • WHDF-type water-reducing, seepage-proof and crack-resistant agent for concrete
  • WHDF-type water-reducing, seepage-proof and crack-resistant agent for concrete

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Experimental program
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Effect test

Embodiment 1

[0020] The components of WHDF-J and their weight percentages are:

[0021] Crystallization excitation component 21%

[0022] Active stimulating ingredient 13%

[0023] Tricalcium aluminate inhibitor 14%

[0024] and easily adjustable components 12%

[0025] Antimicrobial component 2%

[0026] Fly Ash 38%

[0027] Among them, the crystallization stimulating component is sodium hexametaphosphate, the active stimulating component is vitriol, the tricalcium aluminate inhibiting component is phosphogypsum, the easily adjustable component is sodium naphthalenesulfonate, and the antimicrobial component is urea.

[0028] WHDF-J is made by mixing and reacting the above components, and its use method is to add it together with the adhesive during the concrete mixing process.

Embodiment 2

[0030] The components of WHDF-J and their weight percentages are:

[0031] Crystallization excitation component 21%

[0032] Active stimulating ingredient 12%

[0033] Tricalcium aluminate inhibitor 13%

[0034] and easily adjustable components 12%

[0035] Anti-microbial component 5%

[0036] Fly Ash 37%

[0037] Among them, the crystallization stimulating component is alum, the active stimulating component is hemihydrate gypsum, the tricalcium aluminate inhibiting component is boric acid, the easy-to-adjust component is sodium sulfamate, and the anti-microbial component is water glass. With embodiment 1.

Embodiment 3

[0039] The components of WHDF-J and their weight percentages are:

[0040]Crystallization excitation component 21%

[0041] Active stimulating ingredient 13%

[0042] Tricalcium aluminate inhibitor 14%

[0043] and easy adjustment components 15%

[0044] Antimicrobial component 2%

[0045] Fly Ash 35%

[0046] Among them, the crystallization stimulating component is sodium hexametaphosphate, the active stimulating component is vitriol, the tricalcium aluminate inhibiting component is phosphogypsum, and the easy-to-adjust component is sodium naphthalenesulfonate, and the anti-microbial component is urea. Using method is the same as embodiment 1.

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Abstract

The invention relates to a WHDF-type water-reducing, seepage-proof and crack-resistant agent for concrete. The WHDF-type water-reducing, seepage-proof and crack-resistant agent for concrete comprises: by weight, 18 to 28% of a crystallization stimulation component, 12 to 18% of an activity stimulation component, 7 to 15% of a tricalcium aluminate inhibition component, 10 to 20% of a workability adjustment component, 2 to 6% of a microorganism control component and 30 to 40% of a coal ash component. The WHDF-type water-reducing, seepage-proof and crack-resistant agent for concrete can promote a cement hydration degree thereby optimizing hydration products and stimulating secondary hydration action between an active mixed material and calcium hydroxide, and thus the WHDF-type water-reducing, seepage-proof and crack-resistant agent for concrete can effectively improve concrete tensile strength, a ultimate tensile value, compaction performances and a crack-resistant capacity, and can reduce early hydration heat and air shrinkage of concrete and shrinkage-caused cracking. Concrete adopting the WHDF-type water-reducing, seepage-proof and crack-resistant agent for concrete has good seepage-proof and crack-resistant performances.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to a WHDF concrete water-reducing, anti-seepage and anti-cracking agent. Background technique [0002] At present, my country's infrastructure construction is in a stage of rapid development. Concrete is widely used in dams in water conservancy and hydropower construction, roads, railways, bridges, docks, tunnels in traffic construction, and civil construction projects. These concretes have different degrees of shrinkage and resulting cracking, and water seepage, causing corrosion on the surface and inside of the concrete and corrosion of the steel bars inside the concrete, which affects the durability of the concrete and reduces the service life of the concrete project. With the production of high-performance concrete (HPC) and high-strength concrete (HSC), the amount of cement in concrete increases, the amount of water decreases, and the amount of active admixtures i...

Claims

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Application Information

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IPC IPC(8): C04B24/16C04B24/20C04B103/30
Inventor 吴元欣喻幼卿李定或
Owner 武汉天衣新材料有限公司
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