Environment-friendly all-permeable water-permeable concrete based on waste concrete and preparation method thereof

A technology for waste concrete and permeable concrete, applied in the field of building materials, can solve the problems of a single permeable layer, restrict the popularization and application of permeable concrete, and easily block permeable pores, and achieve the effects of improving aesthetics, preventing system blockage, and good permeation performance.

Active Publication Date: 2017-10-24
SHANGHAI RES INST OF BUILDING SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another method, the existing technology includes the permeable concrete currently used on the market, which is generally a single permeable layer, which is prone to problems such as easy blockage of the permeable pores, and its technical status has limited the popularization and application of permeable concrete to a certain extent

Method used

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  • Environment-friendly all-permeable water-permeable concrete based on waste concrete and preparation method thereof
  • Environment-friendly all-permeable water-permeable concrete based on waste concrete and preparation method thereof

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preparation example Construction

[0034] The environmental protection fully permeable color permeable concrete based on waste concrete and the preparation method thereof provided by the present invention comprise the following steps:

[0035] (1) After the waste concrete is broken and screened, four kinds of regenerated aggregates of 2.36mm~4.75mm, 4.75mm~9.5mm, 9.5mm~16.5mm and 4.75mm~26.5mm are obtained; the waste concrete Regenerated aggregate, wherein 4.75mm-9.5mm and 9.5mm-16.5mm need to be strengthened by a strengthening agent; preferably, the strengthening agent is one of potassium methyl silicate or water glass, and the mass concentration is 3% to 45%. The strengthening time is 3 to 8 minutes; after strengthening, the water absorption rate of the recycled aggregate is reduced by 2% to 4%.

[0036] (2) Add waste concrete recycled aggregates of the same particle size, degradable waste plastic particles and water plant silt dry pellets into the mixer at a certain ratio, mix and stir, and add part of the m...

Embodiment 1

[0044] The permeable concrete is divided into three layers: a permeable upper layer, a permeable lower layer, and a porous cement stabilization layer.

[0045]The specific blending ratio is: ① waste concrete recycled aggregate in the permeable upper layer: degradable waste plastic particles: water plant silt dry pellet mass ratio is 90:7:3, and 3‰ of red iron oxide pigment is added; ② The mass ratio of waste concrete recycled aggregate in the permeable lower layer: degradable waste plastic particles: water plant sludge dry pellets is 93:5:2;

[0046] ③ The mass ratio of waste concrete recycled aggregate in the porous cement stabilization layer: degradable waste plastic particles: water plant sludge dry pellets is 83:12:5.

[0047] Please refer to Table 1 below for specific performance information.

[0048] Table 1 Performance of permeable concrete system

[0049]

Embodiment 2

[0051] The permeable concrete is divided into a permeable upper layer, a permeable lower layer, and a porous cement stabilization layer. The specific mixing ratio is as follows: ① waste concrete recycled aggregate in the permeable upper layer: degradable waste plastic particles: water plant sludge drying ball The particle mass ratio is 91:6:3; ②The waste concrete recycled aggregate in the permeable lower layer: the degradable waste plastic particles: the water plant sludge dry pellet mass ratio is 95:3:2; ③The waste concrete in the porous cement stabilization layer The mass ratio of recycled aggregate: degradable waste plastic particles: dry pellets of water plant sludge is 80:15:5.

[0052] Please refer to Table 2 below for specific performance information.

[0053] Table 2 Performance of pervious concrete system

[0054]

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Abstract

The invention provides environment-friendly all-permeable water-permeable concrete based on waste concrete and a preparation method thereof. The preparation method includes the following steps: (1) mixing and stirring 80-93% of a waste concrete regenerated aggregate, 5-15% of degradable waste plastic granules and 2-7% of dried spherical sludge granules from water plants, and after the raw materials are mixed uniformly, adding a part of blend water until the surface of the aggregate is wet; (2) successively adding a cementing material and a mixture liquid of the rest blend water and an additive, and stirring the raw materials until the surface of the mixture is bright; (3) successively paving the mixture according to the sequences of a porous cement stable layer, a water-permeable lower surface layer and a water-permeable upper surface layer, and pressing the paved mixture to form environment-friendly all-permeable colorful water-permeable concrete. The preparation method employs low-cost waste materials as raw materials and is simple in processes. The water-permeable concrete can adsorb nutrients in rainwater, is high in strength, has good water permeability, and is not liable to be blocked.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an environment-friendly fully permeable permeable concrete based on waste concrete and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy and the acceleration of urbanization, the original natural vegetation and bare soil are gradually hardened and covered by water-blocking materials such as buildings and concrete. Due to the lack of breathability of dense ordinary concrete, it is easy to absorb heat. And the ability to infiltrate rainwater is poor, which seriously affects the urban ecology. According to relevant statistics, affected by this, in the past three years, more than 360 cities across the country have experienced waterlogging, and cities such as Beijing, Shenzhen, and Changsha even suffered casualties, resulting in loss of life and property; at the same time, urban heat islands, land subsi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B38/00C04B111/40C04B111/82
CPCC04B28/02C04B2111/00017C04B2111/00284C04B2111/00612C04B2111/0075C04B2111/00793C04B2111/40C04B2111/82C04B2201/50C04B18/141C04B18/08C04B18/16C04B18/20C04B18/0427C04B22/00C04B24/42C04B20/0076C04B2103/302C04B38/0041C04B14/308
Inventor 韩云婷杨利香钱耀丽
Owner SHANGHAI RES INST OF BUILDING SCI CO LTD
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