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Pervious concrete for highway engineering

A permeable concrete and engineering technology, applied in the field of building materials, can solve the problems of poor corrosion resistance to salt, high porosity, poor durability, etc., achieve good corrosion resistance and improve service life

Active Publication Date: 2015-11-25
安萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But also due to the high porosity of pervious concrete, its strength is usually poor, and its salt corrosion resistance is poor, so its durability is not good. Compared with ordinary concrete pavement, it needs more frequent maintenance. In addition, the pervious concrete Transport and molding are also more difficult

Method used

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  • Pervious concrete for highway engineering
  • Pervious concrete for highway engineering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In this embodiment, the corrosion-resistant permeable concrete is composed of 20wt% P.O42.5 cement, 1.2wt% anhydrite powder, 6.0wt% slag pellets, 20wt% electric furnace steel slag, 3.2wt% admixture, and the balance of gravel. Wherein, the admixture contains: 30.0wt% silica sol, 15.0wt% alkylphenol ether sulfosuccinate, 15.0wt% lignosulfonate, 4.0wt% acrylic acid-acrylamide copolymer sodium Salt, 3.0wt% of tetramethylene diisocyanate, 2.5wt% of triglycidyl isocyanurate, 1.2wt% of triphenyl phosphite, and the balance of diethanolamine.

Embodiment 2

[0023] In this embodiment, the corrosion-resistant permeable concrete is composed of 25wt% P.O42.5 cement, 1.0wt% anhydrite powder, 5.0wt% slag pellets, 23wt% blast furnace steel slag, 3.2wt% admixture, and the balance of gravel. Wherein, the admixture contains: 30.0wt% silica sol, 15.0wt% alkylphenol ether sulfosuccinate, 15.0wt% lignosulfonate, 4.0wt% acrylic acid-acrylamide copolymer sodium Salt, 3.0wt% of tetramethylene diisocyanate, 2.5wt% of triglycidyl isocyanurate, 1.2wt% of triphenyl phosphite, and the balance of diethanolamine.

Embodiment 3

[0025] In this embodiment, the corrosion-resistant permeable concrete is composed of 22wt% P.O42.5 cement, 1.2wt% anhydrite powder, 5.5wt% slag pellets, 23wt% electric furnace steel slag, 3.0wt% admixture, and the balance of gravel. Wherein, the admixture contains: 28.0wt% silica sol, 18.0wt% alkylphenol ether sulfosuccinate, 12.0wt% lignosulfonate, 4.0wt% acrylic acid-acrylamide copolymer sodium Salt, 4.0wt% tetramethylene diisocyanate, 2.3wt% triglycidyl isocyanurate, 1.2wt% triphenyl phosphite, and the balance of diisopropanolamine.

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Abstract

The invention relates to anti-corrosion pervious concrete for highway engineering, and belongs to the technical field of building materials. The pervious concrete for highway engineering consists of the following materials in percentage by weight: 20-25% of gelled materials, 1.0-1.2% of calcium-rich powder, 5.0-6.0% of slag aggregate, 20-25% of steel slag aggregates, 2.5-3.2% of additives and the balanced coarse aggregates. On the premise that porosity and permeation coefficient of the anti-corrosion pervious concrete are obviously higher than those of the conventional pervious concrete, and compressive strength of the anti-corrosion pervious concrete is still higher than that of the conventional pervious concrete. Anti-corrosion performance is high, and the service life is prolonged obviously.

Description

technical field [0001] The invention belongs to the technical field of building materials, and more specifically, the invention relates to a kind of permeable concrete for road engineering. Background technique [0002] In the past, ordinary concrete was generally used in urban road construction. Because the pavement formed by it cannot penetrate and collect rainwater, and is highly reflective to heat, it is easy to cause environmental problems such as rainwater accumulation and heat island effect. The use of permeable concrete to pave auxiliary roads, non-motor vehicle lanes and other road surfaces is one of the effective ways to solve the above problems. Permeable concrete is a kind of macroporous concrete. Generally, aggregates with specific particle sizes are used as the skeleton, and cementing materials are wrapped on the surface of the aggregates as the cementing layer to form a skeleton-pore porous structure. Compared with ordinary concrete pavement, permeable paveme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/30
CPCY02W30/91
Inventor 安平
Owner 安萍
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