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Recycled aggregate pervious concrete

A technology of permeable concrete and recycled aggregate, applied in the field of permeable concrete, can solve the problems of difficult transportation and laying, high elastic modulus, large crushing index, etc. sexual effect

Active Publication Date: 2017-09-12
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the recycled aggregate prepared from waste concrete has high water absorption rate, large crushing index, poor frost resistance and high elastic modulus. Therefore, the permeable concrete pavement prepared with recycled aggregate has poor frost resistance and high elastic modulus. (Poor flexibility), high density, high quality, difficult to transport and lay

Method used

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  • Recycled aggregate pervious concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A recycled aggregate permeable concrete is prepared from the following raw materials in parts by weight: 40 parts of waste concrete particles, 30 parts of modified waste tire particles, 17 parts of epoxy resin, 1.5 parts of modifier, 2.6 parts of naphthenic crude oil 0.4 parts of triethylenetetramine, 0.8 parts of diglycidyl ether, and 1 part of tributyl phosphate.

[0023] Said, the size of waste concrete particles is 2.5-10mm, and the bulk density is 1980 kg / m 3 .

[0024] The waste and old concrete granules of the invention are obtained by crushing, sorting and sieving construction waste and old concrete.

[0025] The size of the modified waste tire particles is 5-10mm, and the bulk density is 970kg / m 3 .

[0026] Said modified waste tire particles are prepared by soaking waste tire particles in saturated sodium hydroxide solution for 30 minutes, washing and drying.

[0027] The waste tire granules used in the present invention are obtained by cutting and separat...

Embodiment 2

[0032] A recycled aggregate permeable concrete is prepared from the following raw materials in parts by weight: 50 parts of waste concrete particles, 20 parts of modified waste tire particles, 25 parts of epoxy resin, 1 part of modifier, 1.8 parts of naphthenic crude oil 0.8 parts of triethylenetetramine, 0.5 parts of diglycidyl ether, and 1.5 parts of tributyl phosphate.

[0033] Said, the size of waste concrete particles is 2.5-10mm, and the bulk density is 1920 kg / m 3 .

[0034] Said, the size of the modified waste tire particles is 5-10mm, and the bulk density is 900 kg / m 3 .

[0035] Said modified waste tire particles are prepared by soaking the waste tire particles in a saturated sodium hydroxide solution for 35 minutes, washing and drying in the air.

[0036] As mentioned, the modifying agent is prepared from diboron trioxide, aminotrimethylene phosphonate and isothiazolinone according to the weight ratio of 1:0.7:1.1.

[0037] As mentioned, the epoxy value of the e...

Embodiment 3

[0041]A recycled aggregate permeable concrete is prepared from the following raw materials in parts by weight: 55 parts of waste concrete particles, 15 parts of modified waste tire particles, 35 parts of epoxy resin, 0.5 parts of modifier, 1 part of naphthenic crude oil 1 part, 1 part of triethylenetetramine, 0.2 part of diglycidyl ether, 2 parts of tributyl phosphate.

[0042] Said, the size of waste concrete particles is 2.5-10mm, and the bulk density is 1870 kg / m 3 .

[0043] The size of the modified waste tire particles is 5-10mm, and the bulk density is 800 kg / m 3 .

[0044] Said modified waste tire particles are prepared by soaking the waste tire particles in a saturated sodium hydroxide solution for 40 minutes, washing and drying in the air.

[0045] As mentioned, the modifying agent is prepared from diboron trioxide, aminotrimethylene phosphonate and isothiazolinone according to the weight ratio of 1:0.5:1.2.

[0046] As mentioned, the epoxy value of the epoxy resi...

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Abstract

The invention discloses recycled aggregate pervious concrete. The recycled aggregate pervious concrete is prepared from the following raw materials in parts by weight: 40 to 55 parts of waste concrete particle, 15 to 30 parts of modified waste tire particle, 17 to 35 parts of epoxy resin, 0.5 to 1.5 parts of a modifier, 1 to 2.6 parts of naphthene base crude oil, 0.4 to 1 part of triethylene tetramine, 0.2 to 0.8 part of diglycidyl ether, and 1 to 2 parts of tributyl phosphate. Recycled aggregate and waste tires prepared from waste concrete are taken as raw materials of the recycled aggregate pervious concrete, so on the premise of satisfying compressive strength and permeation coefficients, the recycled aggregate pervious concrete is low in modulus of elasticity, high in flexibility, good in frost resistance performance, small in density, light in weight, and convenient to transport and lay. The waste concrete and the waste tires can be recycled, the problems of occupation of a large place for stacking and storage are solved, and the recycled aggregate pervious concrete is of practical significance for making waste profitable, promoting resource recycling, realizing environmentally friendly management and the like.

Description

technical field [0001] The invention relates to the technical field of permeable concrete, in particular to a recycled aggregate permeable concrete. Background technique [0002] With the gradual acceleration of urbanization in our country, the surface of modern cities is gradually hardened and covered by water-blocking materials such as buildings and concrete, forming an ecological "artificial desert". While travel brings great convenience, these impermeable pavements also have a great negative impact on the ecological environment of the city, and at the same time, a large amount of waste concrete is produced every year. At present, there are mainly three methods for the treatment of waste concrete in our country: physical landfill, preparation of cement clinker as raw material, and preparation of concrete as recycled aggregate. The physical landfill method is to bury the waste concrete on the spot. Although this method is simple and easy, it will not cause environmental p...

Claims

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Application Information

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IPC IPC(8): C04B26/14C04B38/00C04B111/40
CPCC04B26/14C04B2111/00284C04B2111/40C04B2201/50C04B18/16C04B18/22C04B24/08C04B24/121C04B24/023C04B24/045C04B22/0013C04B24/008C04B38/0041
Inventor 程新李彦林芦令超李来波宫晨琛
Owner UNIV OF JINAN