Silane coupling agent modified diabase permeable concrete

A technology of silane coupling agent and permeable concrete, which is applied in the field of influence of silane coupling agent modified diabase aggregate on the performance of permeable concrete

Active Publication Date: 2018-08-03
广西建设职业技术学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of such silane coupling agent-modified aggregates in the preparation of cement-based permeable concrete has not been involved

Method used

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  • Silane coupling agent modified diabase permeable concrete
  • Silane coupling agent modified diabase permeable concrete
  • Silane coupling agent modified diabase permeable concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1 Raw materials and test methods

[0040] 1.1 Test raw materials

[0041] (1) Cement: P.O 42.5 grade ordinary Portland cement, produced by Guangxi China Resources Cement Co., Ltd. The physical and mechanical properties of cement are shown in Table 1.

[0042] Table 1 Cement physical and mechanical performance indicators

[0043]

[0044] (2) Aggregate: Diabase gravel, particle size 2.36-4.75mm, 4.75-9.5mm, 9.5-13.2mm, produced by Guangxi Tiandong County Diabase Mining Co., Ltd. The chemical element analysis results of the aggregate are shown in the table 2. See Table 3 for physical performance indicators.

[0045] Table 2 Aggregate chemical element analysis results table (unit: %)

[0046]

[0047] Table 3 Aggregate Physical Performance Index

[0048]

[0049] (3) Silane coupling agent: model KH-570 (γ-methacryloxypropyltrimethoxysilane), light yellow colorless transparent liquid, melting point -48°C, boiling point 190°C, density 201.05g / cm 3 , produced by...

Embodiment 2

[0084] 1 Raw materials and test methods

[0085] 1.1 Test raw materials

[0086] (1) Cement: P.O 42.5 grade ordinary Portland cement, produced by Guangxi China Resources Cement Co., Ltd. The physical and mechanical properties of cement are shown in Table 7.

[0087] Table 7 cement physical and mechanical performance indicators

[0088]

[0089] (2) Aggregate: Diabase gravel, particle size 2.36-4.75mm, produced by Guangxi Tiandong County Diabase Mining Co., Ltd. The chemical element analysis results of the aggregate are shown in Table 8, and the physical performance indicators are shown in Table 9.

[0090] Table 8 Aggregate chemical element analysis results table (unit: %)

[0091]

[0092] Table 9 Aggregate Physical Performance Index

[0093]

[0094]

[0095] (3) Silane coupling agent: model KH550 (γ-aminopropyltriethoxysilane), produced by Dinghai Plastic Chemical Co., Ltd., Dongguan, Guangdong; water reducing agent: polycarboxylic acid powder water reducing ...

Embodiment 3

[0106] The preparation method of permeable concrete is the same as in Example 2, except that the silane coupling agent is KH560 (γ-(2,3-glycidyloxy)propyltrimethoxysilane)

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Abstract

The invention provides a preparation method of silane coupling agent modified diabase permeable concrete. The method comprises the following steps: silane coupling agent modified diabase as aggregateis uniformly mixed with cement and a water reducing agent, molding and demolding are performed, and the silane coupling agent modified diabase permeable concrete is obtained. Mechanical properties ofpermeable concrete are obviously improved by SCA modified diabase aggregate, and permeability is decreased to a certain extent. The smaller the particle size of aggregate is, the higher the increase amplitude of strength of the SCA modified aggregate permeable concrete specimen is, and the better the modification effect is; the larger the particle size is, the higher the porosity of the SCA modified aggregate specimen is and the higher the permeability coefficient is. According to comprehensive consideration of requirements of maximum practical economy and ecological benefit of engineering, anSCA solution with concentration of 1% is more appropriate for pretreatment.

Description

technical field [0001] The invention belongs to the field of permeable concrete preparation, in particular to the influence of silane coupling agent modified diabase aggregate on the performance of permeable concrete. Background technique [0002] Permeable concrete, also known as porous concrete, is a kind of porous honeycomb lightweight concrete mixed with coarse aggregate, cement, water, admixtures and admixtures. Coating realizes the mutual bonding between coarse aggregate particles and forms a structure with uniform distribution of pores. As an ecological multifunctional permeable pavement material, pervious concrete has good water permeability and air permeability, and its unique porous structure can also reduce road environmental noise. The aggregate particle size of pervious concrete is relatively large, the amount of cementing material is less, the interface cementation point is less, and the transition zone of the aggregate cement layer is relatively weak, resulti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/00C04B111/40
CPCC04B28/04C04B2111/00284C04B2111/0075C04B2111/40C04B2201/50C04B14/14C04B24/42C04B38/0041C04B2103/302C04B18/0427
Inventor 付希尧谢雄敏李波林
Owner 广西建设职业技术学院
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