Ecological water permeable pavement brick for sponge city and preparation method of pavement brick

A technology of permeable pavement bricks and sponge cities, which is applied in the field of sponge city ecological permeable pavement bricks and its preparation, can solve the problems that restrict the construction and development of permeable pavement sponge cities, and the materials are prone to peeling, deformation and even collapse, so as to reduce the cost of land Occupancy, strong water storage and permeability, and the effect of reducing excavation and processing

Active Publication Date: 2019-11-01
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the weak cohesion of asphalt itself, the poor affinity between rubber and asphalt, as well as the aging of asphalt and the rapid water loss, rubber asphalt permeable pavement materials are prone to peeling, deformation and even collapse, which restricts the permeable pavement and sponge. city ​​construction and development

Method used

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  • Ecological water permeable pavement brick for sponge city and preparation method of pavement brick
  • Ecological water permeable pavement brick for sponge city and preparation method of pavement brick
  • Ecological water permeable pavement brick for sponge city and preparation method of pavement brick

Examples

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Effect test

Embodiment 1

[0040] A preparation method for sponge city ecological permeable pavement bricks, comprising the following steps:

[0041] Step 1, waste tire pretreatment: Use a waste tire shredder to crush waste tires into waste tire particles with a particle size of 2-5mm, and then use a sodium hypochlorite (bleaching powder) solution with a concentration of 1‰ to soak and activate the waste tire particles. The consumption of the solution is just enough to immerse the waste tire particles, after soaking and activating for 20 minutes, take out and dry to obtain the rubber particles.

[0042] Step 2, preparing composite adhesive: 774g polyurea adhesive, 227g polyurethane adhesive, 76g carboxylic acid and 38g plasticizer were stirred with a stirrer, and stirred at room temperature at a speed of 20rpm for 15 minutes to make it evenly mixed , to obtain a composite adhesive.

[0043]Among them, component A in the polyurea adhesive uses hexamethylene diisocyanate trimer and polyoxypropylene polyo...

Embodiment 2

[0048] A preparation method for sponge city ecological permeable pavement bricks, comprising the following steps:

[0049] Step 1, waste tire pretreatment: Use a waste tire shredder to crush waste tires into waste tire particles with a particle size of 2-5mm, and then use a sodium hypochlorite (bleaching powder) solution with a concentration of 1‰ to soak and activate the waste tire particles. The dosage of the solution is to immerse the waste tire particles, soak and activate for 25 minutes, take out and dry to obtain rubber particles.

[0050] Step 2, prepare composite adhesive: 900g polyurea adhesive, 600g polyurethane adhesive, 125g carboxylic acid and 40g plasticizer are stirred with a stirrer, and stirred at room temperature at a speed of 30rpm for 10 minutes to make them evenly mixed , to obtain a composite adhesive.

[0051] Among them, component A in the polyurea adhesive uses hexamethylene diisocyanate trimer and polyoxyethylene ether polyol (which can increase hard...

Embodiment 3

[0054] A preparation method for sponge city ecological permeable pavement bricks, comprising the following steps:

[0055] Step 1, waste tire pretreatment: Use a waste tire shredder to crush waste tires into waste tire particles with a particle size of 2-5mm, and then use a sodium hypochlorite (bleaching powder) solution with a concentration of 1‰ to soak and activate the waste tire particles. The dosage of the solution is just enough to immerse the waste tire particles, after soaking and activating for 30 minutes, take it out and dry to obtain the rubber particles.

[0056] Step 2, prepare composite adhesive: stir 800g polyurea adhesive, 400g polyurethane adhesive, 50g carboxylic acid and 20g plasticizer with a stirrer, stir at room temperature for 15 minutes at a speed of 20rpm to make it evenly mixed , to obtain a composite adhesive.

[0057] Among them, component A in the polyurea adhesive uses toluene diisocyanate polymer and polytetrahydrofuran ether glycol, and compone...

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Abstract

The invention discloses an ecological permeable pavement brick for a sponge city and a preparation method of the pavement brick. The pavement brick comprises the following raw materials: waste tires,a polyurea adhesive, a polyurethane adhesive, a carboxylic acid and a plasticizer. The ecological water permeable pavement brick for the sponge city provided by the invention has compressive strengthof 93.5 MPa, a water permeable rate coefficient of 4.2x10<-2> cm/s, and the characteristics of strong water storage and permeation capacity, good elasticity, strong freeze thawing resistance, wear resistance, corrosion resistance, stripping resistance, easy processing and forming and the like, can be used in areas such as squares, channels and road shoulders, realizes cyclic utilization of waste materials, and can provide better material guarantee for sponge city construction; and the preparation method is simple, has low production costs, and is easy to operate and implement.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a sponge city ecological permeable pavement brick and a preparation method thereof. Background technique [0002] With economic development and improvement of people's quality of life, my country has put forward higher requirements for ecological balance and harmonious development between man and nature. As an important part of new urbanization, sponge city construction has attracted much attention. At the executive meeting of the State Council on September 29, 2015, it was proposed to vigorously build sponge cities and improve the quality of urbanization. On October 16, the General Office of the State Council issued the "Guiding Opinions on Promoting the Construction of Sponge Cities", deploying and promoting the construction of sponge cities, and guiding the direction for the construction of sponge cities. Sponge city is a metaphor that a city is like a sponge. When it encoun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L19/00C08L75/02C08L75/06C08L75/08C08K5/17C08K5/18
CPCC08L19/003C08L2205/02C08L2205/03C08L75/02C08L75/06C08L75/08C08K5/17C08K5/18
Inventor 王康姚爱玲
Owner CHANGAN UNIV
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