A kind of artificial aggregate capable of purifying road surface water, permeable concrete and preparation method thereof

A technology for permeable concrete and road surface water, which is applied in the field of permeable concrete, permeable concrete and its preparation, and artificial aggregate, to achieve the effects of uniform and dense crystals, better chemical stability, and improved mechanical properties

Inactive Publication Date: 2018-02-06
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of artificial aggregate and permeable concrete capable of purifying road surface water. In view of the above technical status and the problems existing in the process of road surface runoff pollution prevention and control, it is urgent to develop a Pavement materials with excellent purification function of road surface water pollutants can intercept suspended particles, heavy metals, nutrients and other pollutants in road runoff through the filtration and adsorption of pavement structure and materials, so as to achieve purification effect

Method used

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  • A kind of artificial aggregate capable of purifying road surface water, permeable concrete and preparation method thereof
  • A kind of artificial aggregate capable of purifying road surface water, permeable concrete and preparation method thereof

Examples

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Embodiment 1

[0044] This embodiment provides a kind of artificial aggregate capable of purifying road surface water, which is made of the following raw materials in terms of weight fraction: rice husk ash is 20%, fly ash is 15%, limestone powder is 8%, montmorillonite Soil is 20%, muscovite powder is 20%, carbon nanotube is 1.0%, graphene oxide is 0.2%, titanium dioxide is 0.5%, polyvinylpyrrolidone is 0.2%, and water is 15.1%.

[0045] The preparation method of the artificial aggregate capable of purifying road surface water of the present embodiment comprises the following steps:

[0046] Step 1, taking the above-mentioned raw materials by mass;

[0047] Step 2, put the 50% of the water in the formula into the container, add polyvinylpyrrolidone, stir for 2 minutes with a magnetic stirrer, then add carbon nanotubes, graphene oxide and titanium dioxide, and continue magnetic stirring for 10 minutes to obtain a uniform dispersion Aqueous solution A.

[0048] Step 3, add rice husk ash, fl...

Embodiment 2

[0055] This embodiment provides a kind of artificial aggregate capable of purifying road surface water, which is made of the following raw materials in terms of weight fraction: rice husk ash is 27%, fly ash is 10%, limestone powder is 5%, montmorillonite Soil is 15%, muscovite powder is 18%, carbon nanotube is 1.5%, graphene oxide is 0.1%, titanium dioxide is 0.8%, polyvinylpyrrolidone is 0.3%, and water is 22.3%.

[0056] The preparation method of the artificial aggregate capable of purifying road surface water in this embodiment is the same as that in Embodiment 1.

[0057] The performance test results of this embodiment are shown in Table 1.

Embodiment 3

[0059] This embodiment provides a kind of artificial aggregate capable of purifying road surface water, which is made of the following raw materials in terms of weight fraction: rice husk ash is 30%, fly ash is 12%, limestone powder is 6%, montmorillonite Soil is 18%, muscovite powder is 15%, carbon nanotube is 0.8%, graphene oxide is 0.5%, titanium dioxide is 1.0%, polyvinylpyrrolidone is 0.1%, and water is 16.6%.

[0060] The preparation method of the artificial aggregate capable of purifying road surface water in this embodiment is the same as that in Embodiment 1.

[0061] The performance test results of this embodiment are shown in Table 1.

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Abstract

The invention provides artificial aggregate and pervious concrete capable of purifying road surface water and a preparation method. The pervious concrete is prepared from following raw materials of, by weight percentage, 65%-70% of artificial aggregate, 22%-23% of cement, and 8%-12% of water, wherein the sum of the weight percentages of the raw materials is 100%. The artificial aggregate is prepared from rice hull ash, coal ash, limestone flour, montmorillonoid, white mica powder, carbon nano tubes, graphene oxide, titanium dioxide, polyvinylpyrrolidone and water. The artificial aggregate prepared through the method has excellent mechanical performance, the cylinder compressive strength of the artificial aggregate is higher than 7.5 MPa, the strength basically has no loss after the artificial aggregate is soaked in water, and sufficient structure bearing capacity of a pervious concrete pavement can be guaranteed. In addition, the prepared artificial aggregate has excellent adsorption and degrading performance, so that the prepared pervious concrete is excellent in mechanical performance and outstanding in road surface water purifying effect.

Description

technical field [0001] The invention belongs to the field of environment-friendly road materials and relates to permeable concrete, in particular to an artificial aggregate capable of purifying road surface water, permeable concrete and a preparation method. Background technique [0002] With the rapid development of my country's highway transportation infrastructure and the acceleration of urbanization, the density of highways and urban road networks has been further intensified. had a huge negative impact. Due to the rapid growth of car ownership and the sharp increase in road freight, vehicle exhaust emissions, tire and road wear, component corrosion, grease leakage, and the use of deicing salts have resulted in a large amount of suspended particles, heavy metals, nutrients and organic matter, etc. Accumulation of pollutants on road surfaces. Suspended particulate matter SS mainly comes from tire wear particles, road surface material wear particles, particles produced by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/02C04B38/08C02F1/28C02F101/16C02F101/10C02F101/20C02F101/30
CPCC02F1/288C02F2101/105C02F2101/16C02F2101/20C02F2101/30C02F2103/001C04B18/027C04B28/04C04B2111/00284C04B2111/0075C04B2201/50C04B18/023C04B18/08C04B18/101C04B14/28C04B14/104C04B14/20C04B14/026C04B14/024C04B14/305C04B38/0074
Inventor 况栋梁刘珺何锐谈亚文黄鑫杨哲
Owner CHANGAN UNIV
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