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Pervious concrete reinforcing agent as well as preparation method and application thereof

A permeable concrete and reinforcing agent technology, applied in the field of concrete, can solve the problems of low early strength, low economic benefit and poor construction performance of permeable concrete, and achieve the effects of reducing production cost, improving economic benefit and high construction performance

Active Publication Date: 2020-11-03
河北省建筑科学研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low early strength, poor cohesion, large shrinkage and high cost of permeable concrete prepared with existing reinforcing agents, which lead to poor construction, easy cracking, poor durability and low economic benefits, the present invention provides a permeable concrete reinforcing agent and Its preparation method and application

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  • Pervious concrete reinforcing agent as well as preparation method and application thereof
  • Pervious concrete reinforcing agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A permeable concrete reinforcing agent, comprising the following components in mass percentage:

[0031] Silica fume 60%, fly ash zeolite powder 11%, polycarboxylate superplasticizer powder 2%, EVA dispersible latex powder 10%, methyl cellulose ether 2%, sodium dodecylbenzenesulfonate 1%, Polyvinyl alcohol fiber 5%, sodium sulfate 7% and sodium silicate 2%.

[0032] Wherein, the particle diameter of silica fume is 0.1-0.3 μ m; the preparation method of fly ash zeolite powder is: the NaOH solution of 2mol / L and fly ash are mixed according to the ratio of the NaOH solution of 6mL in every 1g of fly ash, Stir and heat at 90° C. under microwave conditions, react and crystallize for 1 hour, then perform suction filtration, water washing, drying and grinding in sequence to obtain fly ash zeolite powder.

[0033] The preparation method of the above-mentioned permeable concrete reinforcing agent is: silica fume, polycarboxylate superplasticizer powder, EVA dispersible latex po...

Embodiment 2

[0038] A permeable concrete reinforcing agent, comprising the following components in mass percentage:

[0039] Silica fume 63%, fly ash zeolite powder 12.5%, polycarboxylate superplasticizer powder 3%, EVA dispersible latex powder 7%, methyl cellulose ether 1.5%, sodium dodecylbenzenesulfonate 0.8%, 6% polyvinyl alcohol fiber, 5% early strength agent and 1.2% sodium aluminate.

[0040]Wherein, the particle diameter of silica fume is 0.1-0.3 μ m; the preparation method of fly ash zeolite powder is: the NaOH solution of 3mol / L and fly ash are mixed according to the ratio of the NaOH solution of 8mL in every 1g of fly ash, Stir and heat at 100°C under microwave conditions, react and crystallize for 2 hours, then carry out suction filtration, water washing, drying and grinding in sequence to obtain fly ash zeolite powder; early strength agent is composed of sodium sulfate and triethanolamine with a mass ratio of 4:1 .

[0041] The preparation method of the above-mentioned perme...

Embodiment 3

[0046] A permeable concrete reinforcing agent, comprising the following components in mass percentage:

[0047] Silica fume 63%, fly ash zeolite powder 12.5%, polycarboxylate superplasticizer powder 3%, EVA dispersible latex powder 7%, methyl cellulose ether 1.5%, sodium dodecylbenzenesulfonate 0.8%, 6% polyvinyl alcohol fiber, 5% early strength agent and 1.2% sodium aluminate.

[0048] Wherein, the particle diameter of silica fume is 0.1-0.3 μ m; the preparation method of fly ash zeolite powder is: the NaOH solution of 3mol / L and fly ash are mixed according to the ratio of the NaOH solution of 8mL in every 1g of fly ash, Stir and heat at 100°C under microwave conditions, react and crystallize for 2 hours, then carry out suction filtration, water washing, drying and grinding in sequence to obtain fly ash zeolite powder; early strength agent is composed of sodium sulfate and triethanolamine with a mass ratio of 3:1 .

[0049] The preparation method of the above-mentioned perm...

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Abstract

The invention relates to the technical field of concrete, and particularly discloses a pervious concrete reinforcing agent and a preparation method and application thereof. The pervious concrete reinforcing agent comprises the following components in percentage by mass: 60-70% of silica fume, 8-15% of fly ash zeolite powder, 2-4% of a polycarboxylate superplasticizer, 5-10% of dispersible latex powder, 1-2% of methyl cellulose ether, 0.5-1% of sodium dodecyl benzene sulfonate, 5-10% of a fiber material, 4-7% of an early strength agent and 1-3% of a coagulation accelerator. Due to the additionof the reinforcing agent, the pervious concrete has good compressive strength, tensile strength, permeability coefficient, frost resistance, corrosion resistance and heat resistance, has excellent comprehensive performance, can realize quick repair and quick construction of a pervious pavement, and meets the requirements of short repair time and quick recovery of the pervious pavement. Meanwhile,the reinforcing agent disclosed by the invention takes industrial wastes as raw materials, so that the cost of the reinforcing agent is greatly reduced, the environmental pressure is reduced, and theeconomic benefit is relatively high.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a permeable concrete reinforcing agent and a preparation method and application thereof. Background technique [0002] Permeable concrete is a kind of porous structure concrete, which is usually prepared and mixed by coarse aggregate, cementitious material, water and admixture in a certain proportion. It is a new environment-friendly and ecological road material. Permeable concrete can be widely used In parks, squares, parking lots, sidewalks, underground buildings, greening, sewage purification and other fields, it can effectively solve the problems of urban rainwater inundation and groundwater replenishment and release. [0003] The role of the reinforcing agent (admixture) is to make the cement paste (gel material) covering the surface of the stone fully wrap the stone (coarse aggregate), keep the cement paste still, and improve the viscosity of the permeable concrete, thereb...

Claims

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Application Information

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IPC IPC(8): C04B24/38C04B28/04C04B28/06C04B28/08
CPCC04B40/0039C04B28/04C04B28/06C04B28/08C04B2111/00284C04B2201/50C04B18/146C04B14/047C04B2103/302C04B2103/0057C04B24/383C04B24/20C04B16/0641C04B16/0633C04B22/147C04B24/04C04B24/122C04B22/085C04B12/04C04B22/0093C04B22/148C04B22/10C04B14/00C04B22/002
Inventor 李如林赵斌付士峰周恩泽刘东基张广田韩素玉王飞刘以臣董泽华高辉鲁丽棉武海蔚谷峪刘颖陈苏李帅韩方达
Owner 河北省建筑科学研究院有限公司