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Water-retaining permeable concrete using construction waste and preparation method thereof

A water-retaining, water-permeable pavement technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of poor water retention performance and non-conforming to recycling, and achieve waste reduction, artistry and appreciation , the color can be diversified effect

Active Publication Date: 2020-03-24
厦门宏鹭升建筑新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since each layer of the existing permeable pavement structure basically uses natural sand (machine-made sand, stone) as the main aggregate of various structures, although it has water permeability and air permeability, its own water retention performance is poor. , and the main aggregate used does not conform to the promotion of recycling

Method used

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  • Water-retaining permeable concrete using construction waste and preparation method thereof
  • Water-retaining permeable concrete using construction waste and preparation method thereof
  • Water-retaining permeable concrete using construction waste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Prepare the first water-retaining permeable concrete for the sand layer of the water-retaining and permeable ground structure, as follows:

[0043] (1) Weigh each raw material component according to the following parts by weight: 1-30 parts by weight of cement, 1-3 parts by weight of mineral admixture, 50-90 parts by weight of aggregate, 0-3 parts by weight of colorant, special admixture SZ -BS-02 0.1 to 3 parts by weight and 4 to 9 parts by weight of water;

[0044] The above cement is ordinary portland cement P.O 42.5, P.O 52.5;

[0045] Above-mentioned aggregate is made up of the component of following percentage by weight:

[0046] Waste concrete particles with a particle size of 2-8mm 30%

[0047] Waste clay brick particles with a particle size of 2-8mm 50%

[0048] Lightweight ceramsite with particle size not greater than 4mm 20%

[0049] The above-mentioned mineral admixtures are made by using the specific surface area ≥ 550m2 generated during the constructio...

Embodiment 2

[0053] Prepare the second water-retaining pervious concrete for the graded cushion of the water-retaining permeable ground structure, as follows:

[0054] (1) Weigh each raw material component according to the following parts by weight: 1-30 parts by weight of cement, 1-3 parts by weight of mineral admixture, 50-90 parts by weight of aggregate, 0-3 parts by weight of colorant, special admixture SZ -BS-02 0.1 to 3 parts by weight and 4 to 9 parts by weight of water;

[0055] The above cement is ordinary portland cement P.O 42.5, P.O 52.5;

[0056] Above-mentioned aggregate is made up of the component of following percentage by weight:

[0057] Waste concrete particles with a particle size of 2 to 30mm 30%

[0058] Waste clay brick particles with a particle size of 2-30mm 50%

[0059] Lightweight ceramsite with a particle size of 0.1-15mm 20%;

[0060] The above waste concrete particles are composed of first concrete particles and second concrete particles in a weight ratio ...

Embodiment 3

[0067] Such as figure 1 As shown, a water-retaining permeable ground structure, the pavement structure includes from top to bottom: permeable surface layer 1 (the basic formula is: 25-35 parts of cement, 45-55 parts of waste concrete particles with a particle size of 5.0-10.0mm , 10-20 parts of waste concrete particles with a particle size of 2.0-5.0 mm, 1-3 parts of colorant determined according to the design and color matching, 1-3 parts of special admixture SZ-BS-02 and 2-4 parts of water, paving Thickness A=10~60mm), sand layer 2 (paving the first water-retaining permeable concrete in Example 1, paving thickness B=80~200mm, specific formula is shown in the table below), graded cushion layer 3 (paving The second water-retaining permeable concrete in Example 2, the pavement thickness D=100-200mm, the specific formula is shown in the table below) and the base layer 6.

[0068]

[0069] The pavement method of this embodiment is:

[0070] 1. The base layer 6 plain soil is ...

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Abstract

The invention discloses water-retention water-permeable concrete utilizing construction waste and a preparation method of the water-retention water-permeable concrete. The water-retention water-permeable concrete is prepared from, by weight, 1-30 parts of cement, 1-3 parts of a mineral additive, 50-90 parts of aggregates, 0-3 parts of a coloring agent, 0.1-3 parts of a special additive SZ-BS-02 and 4-9 parts of water, wherein the mineral additive is ultrafine powder which is generated in the construction waste treatment process and has the specific surface area larger than or equal to 550 m<2> / kg, and the aggregates are prepared from, by weight, 25-35 parts of waste concrete particles with the particle size ranging from 2 mm to 30 mm, 45-55 parts of waste clay brick particles with the particle size ranging from 2 mm to 30 mm and 15-25 parts of light ceramisite with the particle size not larger than 15 mm. The water-retention water-permeable concrete prepared through the method has the good water retention, water permeability and gas permeability and is suitable for being used by a sponge city.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a water-retaining permeable concrete using construction waste and a preparation method thereof. Background technique [0002] With the rapid development of urbanization, as well as the introduction of "sponge city" and circular economy, the design and construction of the pedestrian roads in the city, the sidewalks in garden projects, pedestrian streets, and roads in residential areas, etc., all need to meet the requirements of water-permeable ground. The permeable ground can not only collect a large amount of rainwater, but also absorb ground dust. It is cooler than conventional roads in summer, effectively replenishing groundwater and alleviating the urban heat conduction effect. Realize no road surface water in rainy days, reduce safety accidents due to slippery roads in rainy days, and create a good urban environment. [0003] The existing permeable pav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/16
CPCC04B18/16C04B28/04C04B2111/00267C04B2111/00284C04B18/025C04B2103/54C04B2103/0068C04B22/002Y02W30/91
Inventor 邓斌刘光郭明辉李伯军
Owner 厦门宏鹭升建筑新材料有限责任公司
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