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Steel slag pervious concrete

A permeable concrete and steel slag technology, applied in the field of steel slag permeable concrete, can solve the problems of weakening the function of the reservoir, achieve the effect of increasing the rate, reducing the amount of residual water, and improving the collection rate

Active Publication Date: 2018-09-18
苏州易斯特建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the permeable concrete pavement structure with water storage type, its own water permeability determines the actual use efficiency of the reservoir. If a large amount of rainwater is accumulated in the pavement structure, it cannot finally penetrate into the bottom reservoir In the middle, the role of the reservoir is greatly weakened

Method used

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  • Steel slag pervious concrete
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A steel slag permeable concrete with a total weight of 1 ton, including:

[0034] Ordinary Portland cement (strength grade 42.5, the same below) 140kg;

[0035] Mixed aggregate 650kg (steel slag (Deton Mining, the same below) 333kg, gravel (Deton Mining, the same below) 317kg);

[0036] Polycarboxylate water reducer (Minghuang Technology MH-JS-102, the same below) 8kg;

[0037] Metakaolin (Rongtai Chemical, the same below) 5kg;

[0038] Modified rubber 20kg (silicone modified polyacrylate (Jianmeng Chemical KR-9706, the same below) 9.2kg and styrene-butadiene rubber emulsion (Haiyun Building Materials T2535L, the same below) 10.8kg);

[0039] Calcium carbonate powder (Shenghaiyuan new material HY-8016, the same below) 2kg;

[0040] 175kg of water.

[0041] Performance test: The steel slag permeable concrete in Example 1 is made into concrete bricks, and the following performance indicators are obtained according to the GB28635-2012 test method:

[0042]

[0043]...

Embodiment 2

[0050] Replace 9.2 kg of silicone-modified polyacrylate in Example 1 with 9.2 kg of organic fluorine-modified polyacrylate (Rieter resin LD-1084), and the rest are the same as in Example 1.

Embodiment 3

[0052] A steel slag permeable concrete with a total weight of 1 ton, including:

[0053] Ordinary Portland cement (strength grade 42.5) 140kg;

[0054] Mixed aggregate 650kg (steel slag (Deton Mining) 333kg, gravel (Deton Mining) 317kg);

[0055] Polycarboxylate water reducer (Minghuang Technology MH-JS-102) 8kg;

[0056] Metakaolin (Rongtai Chemical) 5kg;

[0057] Modified rubber 20kg (silicone modified polyacrylate (Jianmeng Chemical KR-9706) 9.2kg and styrene-butadiene rubber emulsion (Haiyun Building Materials T2535L) 10.8kg);

[0058] Calcium carbonate powder (Shenghaiyuan new material HY-8016) 2kg;

[0059] Straw powder 3kg;

[0060] 172kg of water.

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Abstract

The invention relates to steel slag pervious concrete which contains the following materials in percentage by weight: 14-18% of ordinary Portland cement, 65-75% of blended aggregate, 0.8-1.4% of waterreducing agent, 0.5-1% of metakaolin, 2-3% of modified sizing material, 0.2-0.4% of calcium carbonate powder and the balance of water, wherein the mixed aggregate is a combination of steel slag and macadam; and the modified sizing material is a combination of modified polyacrylate and butadiene styrene rubber. According to the scheme, the concrete material is modified, and therefore, the blockage-proof performance of the concrete after being used for a long time is improved, the rate for rainwater to permeate concrete is increased, the rainwater residual amount in the concrete is effectivelyreduced, the rainwater collection rate is increased, and the practicability of an impounding pavement structure is improved.

Description

technical field [0001] The invention relates to a steel slag permeable concrete, in particular to a steel slag permeable concrete with high water permeability for building a sponge city. Background technique [0002] Sponge city is a new generation of urban stormwater management concept. When it rains, it absorbs, stores, infiltrates, purifies, and releases the stored water when it is needed. However, the construction of a sponge city is a very large system, which involves many aspects that need to be improved, such as road pavement structure design, pavement material design, pavement process optimization, and construction efficiency optimization. [0003] For the permeable concrete pavement structure with water storage type, its own permeable efficiency determines the actual use efficiency of the reservoir. If a large amount of rainwater is accumulated in the pavement structure, it cannot finally penetrate into the bottom reservoir In the middle, the role of the reservoir ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00284C04B2201/50C04B18/142C04B18/12C04B24/24C04B14/106C04B24/2641C04B24/2676C04B14/28C04B18/24
Inventor 单东陈健
Owner 苏州易斯特建材科技有限公司
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