Construction waste recycled roadbed aggregate as well as preparation method and performance evaluation method thereof

A construction waste and aggregate technology is applied in the field of construction waste regenerated roadbed aggregates, preparation methods and performance evaluation, which can solve the problems of increasing demand for waste clay brick roadbed filling materials, and achieve pore reduction, large economic benefits, and resistance to The effect of pressure and stability improvement

Pending Publication Date: 2018-07-24
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a construction waste recycled roadbed aggregate and its preparation method and performance evaluation method, which solves the problems in the prior art that a large number of waste clay bricks need to be treated urgently and the demand for roadbed filling materials is increasing day by day

Method used

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  • Construction waste recycled roadbed aggregate as well as preparation method and performance evaluation method thereof
  • Construction waste recycled roadbed aggregate as well as preparation method and performance evaluation method thereof
  • Construction waste recycled roadbed aggregate as well as preparation method and performance evaluation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] The raw material composition of the present embodiment and the percentage of each mass accounted for the total mass are:

[0081] Mixture A: 70%;

[0082] Lime: 3%;

[0083] Soil: 16%;

[0084] Water: 11%.

[0085] In the mixture A, the mass percentage of waste clay bricks is 22%, and the mass percentage of waste concrete is 78%.

[0086] Among them: the particle size of waste clay bricks and waste concrete is 1.18mm-37.5mm, and the particle size of loess and lime is below 1.18mm.

[0087] The preparation method of the recycled subgrade aggregate of the present embodiment may further comprise the steps:

[0088] Step 1, select waste bricks and concrete with a particle size of 1.18 mm to 37.5 mm, and loess and lime with a particle size below 1.18 mm.

[0089] Step 2, take 15.4g of the selected waste brick material and 54.6g of the concrete material, and mix them uniformly to obtain the mixture A.

[0090] Step 3, carry out the crushing value test on the mixture A, ...

Embodiment 2

[0097] The raw material composition of the present embodiment and the percentage of each mass accounted for the total mass are:

[0098] Mixture A: 73%;

[0099] Lime: 2.5%;

[0100] Soil: 14%;

[0101] Water: 10.5%;

[0102] In the mixture A, the mass percentage of waste clay bricks is 25%, and the mass percentage of waste concrete is 75%.

[0103]Among them: the particle size of waste clay bricks and waste concrete is 1.18mm-37.5mm, and the particle size of loess and lime is below 1.18mm.

[0104] The preparation method of the recycled subgrade aggregate of the present embodiment may further comprise the steps:

[0105] Step 1, select waste bricks and concrete with a particle size of 1.18 mm to 37.5 mm, and loess and lime with a particle size below 1.18 mm.

[0106] Step 2, take 18.25g of the selected waste brick material and 54.75g of the concrete material, and mix them uniformly to obtain the mixture A.

[0107] Step 3, carry out the coarse aggregate crushing value t...

Embodiment 3

[0114] The raw material composition of the present embodiment and the percentage of each mass accounted for the total mass are:

[0115] Mixture A: 77%;

[0116] Lime: 2%;

[0117] Soil: 12%;

[0118] Water: 9%;

[0119] In the mixture A, the mass percentage of waste clay bricks is 28%, and the mass percentage of waste concrete is 72%.

[0120] Among them: the particle size of waste clay bricks and waste concrete is 1.18mm-37.5mm, and the particle size of loess and lime particles is below 1.18mm.

[0121] The preparation method of the recycled subgrade aggregate of the present embodiment may further comprise the steps:

[0122] Step 1, select waste bricks and concrete with a particle size of 1.18 mm to 37.5 mm, and loess and lime with a particle size below 1.18 mm.

[0123] Step 2, take 21.56g of the selected waste brick material and 55.44g of the concrete material, and mix them uniformly to obtain the mixture A.

[0124] Step 3, carry out the coarse aggregate crushing v...

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Abstract

The invention provides a construction waste recycled roadbed aggregate as well as a preparation method and a performance evaluation method thereof. The construction waste recycled roadbed aggregate isprepared by mixing the following components in percentage by mass: 70-77% of a mixture A, 2-3% of lime, 12-16% of soil and 9-11% of water, wherein the mixture A is prepared by mixing the following components in percentage by mass: 22-28% of waste bricks and 72-78% of waste concrete. The problems in the prior art that lots of waste clay bricks are to be treated and requirements of roadbed embankment materials are daily on the increase are solved. The waste bricks are used for the recycled roadbed aggregate, the wastes can be recycled, and high economic benefits can be produced.

Description

technical field [0001] The invention relates to the technical field of building roadbeds, in particular to a construction waste recycled roadbed aggregate, a preparation method and a performance evaluation method. Background technique [0002] With the in-depth development of urbanization in my country, 500-600 tons of waste bricks and cement blocks will be produced in the construction of 10,000 square meters of construction waste. The demand for roadbed filling materials for urban road reconstruction and expansion is increasing day by day. [0003] The traditional subgrade cushion material in my country is mainly soil, which has low strength and large deformation. Due to the urgent demand for new roadbed cushion materials in China, waste concrete has also been used as the main material of roadbed cushions in recent years. Although the concrete has high strength and small deformation, it has large pores and poor compaction. It shows brittle failure and poor long-term stabil...

Claims

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Application Information

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IPC IPC(8): C04B22/06C04B18/16C04B20/00C04B20/02E01C3/00
CPCC04B18/16C04B20/0096C04B20/026C04B40/0046E01C3/003C04B22/064C04B14/361C04B22/002Y02W30/91
Inventor 孔德泉万蓉尹天雨张立鑫亢嘉源宁江峰王永辉黄炜明
Owner CHANGAN UNIV
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