Environment-friendly pervious concrete for roads as well as preparation method and application thereof

A permeable concrete and environmentally friendly technology, applied in the field of concrete, can solve the problems of polluting surrounding water sources, affecting vegetation growth, occupying land, etc., and achieves the effects of light weight, low cost and good mechanical properties

Active Publication Date: 2021-05-11
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are more and more dust, gravel, and scraps produced by stone processing, which are randomly piled up by enterprises. Over time, waste and stone powder pile up into mountains, occupying a large amount of land, seriously affecting the growth of vegetation, and polluting surrounding water sources.

Method used

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  • Environment-friendly pervious concrete for roads as well as preparation method and application thereof
  • Environment-friendly pervious concrete for roads as well as preparation method and application thereof
  • Environment-friendly pervious concrete for roads as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The raw material composition of solid waste-based sulfoaluminate cementitious material: 38 parts of waste rock powder, 17 parts of desulfurized gypsum, 12 parts of steel slag, and 33 parts of aluminum slag.

[0040] Take waste rock powder, desulfurized gypsum, steel slag, and aluminum slag and mix them in proportion, then calcinate and keep warm at 1250°C for 30 minutes in a rotary kiln to obtain cement clinker. Take 90 parts of the cement clinker, mix it with 4 parts of limestone powder and 6 parts of gypsum, and grind it finely. Compared with ordinary Portland cement (P.O) on the market, it has the characteristics of early strength, rapid hardening, high strength, low cost, and environmental protection. Among them, the quantitative analysis of minerals contained in the XRD spectrum of solid waste-based sulfoaluminate cementitious materials is as follows: figure 1 As shown, its compressive strength from 12h to 28d is as figure 2 shown.

Embodiment 2

[0043] Raw material composition of permeable pavement concrete: 200 parts of solid waste-based sulfoaluminate cementitious material, 760 parts of coarse aggregate, 40 parts of fine aggregate, 10 parts of waste rock powder, 0.2 part of water reducer, 1 part of thickener; than 0.21.

[0044] Coarse aggregate mixture of crushed stones and coal gangue particles with a mass ratio of 8:2 with a particle size of 5mm-10mm and machine-made sand and iron tailings with a mass ratio of 1:1 with a particle size of 0.5mm-1.25mm The fine aggregate mixture was placed in a mixer and stirred for 30s. Then add solid waste-based sulfoaluminate cementitious material, waste rock powder, water reducer, and thickener for dry mixing for 60 seconds, and finally add water and stir for 120 seconds to obtain a permeable concrete mixture for pavement. The concrete is placed in the mold and compacted to shape, then the standard curing temperature is 20±0.5°C and the humidity is 98%.

[0045] Performance t...

Embodiment 3

[0047] Raw material composition of permeable pavement concrete: 200 parts of solid waste-based sulfoaluminate cementitious material, 730 parts of coarse aggregate, 60 parts of fine aggregate, 12 parts of waste rock powder, 0.2 part of water reducer, 1 part of thickener; water glue than 0.21.

[0048] Coarse aggregate mixture of crushed stones and coal gangue particles with a mass ratio of 8:2 with a particle size of 5mm-10mm and machine-made sand and iron tailings with a mass ratio of 1:1 with a particle size of 0.5mm-1.25mm The fine aggregate mixture was placed in a mixer and stirred for 30s. Then add solid waste-based sulfoaluminate cementitious material, waste rock powder, water reducer, and thickener for dry mixing for 60 seconds, and finally add water and stir for 120 seconds to obtain a permeable concrete mixture for pavement. The concrete is placed in the mold and compacted to shape, then the standard curing temperature is 20±0.5°C and the humidity is 98%.

[0049] Pe...

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Abstract

The invention provides environment-friendly pervious concrete for roads as well as a preparation method and application thereof. The environment-friendly pervious concrete for roads is prepared from the following raw materials or consists of the following components in parts by weight: 150-250 parts of a solid waste-based sulphoaluminate cementing material, 600-750 parts of coarse aggregate, 40-80 parts of fine aggregate, 10-15 parts of waste stone powder, 0.2-0.25 parts of a water reducing agent and 1 part of a thickening agent, wherein the water-binder ratio is 0.20-0.25. The shape-maintaining pervious concrete for roads has the characteristics of air permeability, water permeability and light weight, has better mechanical properties, is simple in process, low in cost, low-carbon and environment-friendly, and is high in added value by adopting solid waste resource products.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to an environment-friendly road permeable concrete and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The construction of "sponge city" has a significant effect on purifying groundwater resources, alleviating urban waterlogging, and improving the urban heat island effect. Permeable concrete is the main material for the pavement of "sponge city". Permeable concrete is mainly made of coarse aggregate, cementitious material, water and admixture and other materials through a specific mixing method. Traditional road permeable concrete uses mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B7/24C04B7/21
CPCC04B28/06C04B7/243C04B7/21C04B2111/00284C04B2111/0075C04B2111/00017C04B2201/50C04B18/12C04B14/06C04B2103/302C04B2103/44Y02P40/10
Inventor 王文龙吴长亮李敬伟王旭江张超蒋稳毛岩鹏孙静赵希强宋占龙
Owner SHANDONG UNIV
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