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A kind of high strength and high water permeability concrete and its preparation method

A water permeability, concrete technology, applied in the field of new permeable concrete pavement materials, to achieve the effect of improving water permeability, increasing compressive strength, and superior water permeability

Active Publication Date: 2020-03-17
安徽诺威新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to provide a light-weight, high-strength and high-permeability concrete material that can alleviate the urban "heat island effect", solve the problem of road surface water and control the groundwater level

Method used

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  • A kind of high strength and high water permeability concrete and its preparation method
  • A kind of high strength and high water permeability concrete and its preparation method
  • A kind of high strength and high water permeability concrete and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0037] The performance index of each raw material used in the present embodiment is as follows:

[0038] 1. Gravel

[0039] The particle size range of gravel is 5mm ~ 10mm, and the bulk density is 1500kg / m 3 , the technical indicators of gravel are shown in Table 1.

[0040] Table 1 Technical indicators of gravel

[0041]

[0042] 2. Brick aggregate

[0043] The particle size of brick aggregates ranges from 5mm to 22mm, and the technical indicators are shown in Table 2.

[0044] Table 2 Technical Index of Brick Aggregate

[0045]

[0046] 3. Silica fume

[0047] Silica fume is ferrosilicon alloy and industrial silicon will be smelted to produce SiO 2 It is an ultrafine powder material that is rapidly oxidized and condensed into Si gas in the air. Silicon dioxide (SiO 2 ) as its main component, its volcanic ash activity is very high. The average particle size of silica fume is in the range of 0.15-0.20μm, and the specific surface area is in the range of 15000-200...

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Abstract

The invention discloses concrete with high strength and high permeable rate and a preparation method of the concrete. The concrete is prepared by mixing gravels with brick aggregate, and taking a mixture as coarse aggregate; mixing silica fume, potassium lignosulfonate and sodium silicate, taking a mixture as a fortifier and then adding cement, an emulsifier and water. The permeation coefficient of the concrete obtained by the preparation method disclosed by the invention reaches 0.82 mm / s, so the concrete belongs to an efficient permeable pavement material with superior permeability; in addition, the compressive strength reaches 35.6MPa which is in line with standards of GJJ / T135-2009 Technical Specification of Permeable Cement Concrete Pavement; an internal exposure index (IRa) is 0.10,an external exposure index (Ir) is 0.17; besides, the concrete is in line with A type decoration materials.

Description

technical field [0001] The invention relates to a novel permeable concrete pavement material. Background technique [0002] With the advancement of reform and opening up, in terms of urban transformation in my country, a large area of ​​the original land and roads in cities and towns has been replaced by impermeable roads such as asphalt concrete and cement concrete. At the same time, dense buildings in the city, coupled with impermeable roads such as asphalt and cement concrete, make the city absorb and store more solar energy than the suburbs during the day, and the temperature in the city cools down slowly at night and is still higher than the temperature in the suburbs, thus forming a heat island effect. In addition, cities in rainy areas encounter short-term heavy rains under the existing drainage systems, which will increase the burden on drainage facilities and affect drainage effects, which may cause short-term floods in low-lying areas. [0003] At present, the mea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/00
CPCC04B28/04C04B2111/00284C04B2111/0075C04B2201/50C04B14/02C04B18/146C04B24/18C04B12/04C04B18/16C04B2103/40C04B38/0038
Inventor 徐子芳马俊方存松李征宇
Owner 安徽诺威新型建材有限公司
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