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Waste cement concrete recycled aggregate warm mixed asphalt mixture and making method thereof

A technology of cement concrete and recycled aggregates, which is applied in the field of asphalt mixtures. It can solve the problems of decreased road performance of warm-mix asphalt mixtures, high energy consumption of hot-mix asphalt mixtures, waste of natural aggregates, etc., and reduce exhaust emissions. , Improve the comprehensive utilization rate, enhance the effect of adhesion

Active Publication Date: 2017-07-14
TAIZHOU POLYTECHNIC COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and at the same time solve the pollution of the environment caused by waste cement concrete and hot-mix asphalt mixture waste gas, the waste of natural aggregate resources, the large energy consumption of hot-mix asphalt mixture and the warm mixing of natural aggregates The road performance of asphalt mixture has declined and other problems

Method used

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  • Waste cement concrete recycled aggregate warm mixed asphalt mixture and making method thereof
  • Waste cement concrete recycled aggregate warm mixed asphalt mixture and making method thereof
  • Waste cement concrete recycled aggregate warm mixed asphalt mixture and making method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0028] This example is a waste cement concrete regenerated aggregate warm-mix asphalt mixture prepared according to the gradation requirements of continuous dense gradation with a nominal maximum particle size of 16 mm in "Technical Specifications for Road Asphalt Pavement Construction (JTG F40-2004)". Its raw materials are as follows:

[0029] 1. In this embodiment, four grades of waste cement concrete recycled aggregates are selected: recycled aggregates with a particle size of 9.5-16 mm, recycled aggregates with a particle size of 4.75-9.5 mm, recycled aggregates with a particle size of 2.36-4.75 mm, The apparent relative density of recycled aggregates with a particle size of 0-2.36 mm is shown in Table 1. The apparent relative densities of recycled aggregates of waste cement concrete of each grade meet the "Technical Specifications for Construction of Highway Asphalt Pavement (JTG F40-2004) "Require. The test results of mechanical performance indicators such as crushing v...

Embodiment 2

[0043] This example is a waste cement concrete recycled aggregate warm-mix asphalt mixture prepared according to the continuous dense gradation with a nominal maximum particle size of 19 mm in the "Technical Specifications for Construction of Highway Asphalt Pavement (JTG F40-2004)". The waste cement concrete recycled aggregate warm mix asphalt mixture is the same as that of Example 1, only the particle size specification of the waste cement concrete recycled aggregate and the parts by weight of the raw materials used are different.

[0044] 1. In this embodiment, five grades of recycled aggregates for waste cement concrete are selected: recycled aggregates with a particle size of 16-19mm, recycled aggregates with a particle size of 9.5-16mm, recycled aggregates with a particle size of 4.75-9.5mm, granular The apparent relative densities of recycled aggregates with a diameter of 2.36-4.75 mm and recycled aggregates with a particle size of 0-2.36 mm are shown in Table 3. Asphal...

Embodiment 3

[0050] This example is a waste cement concrete recycled aggregate warm mix asphalt mixture prepared according to the continuous dense gradation with a nominal maximum particle size of 26.5mm in the "Technical Specifications for Construction of Highway Asphalt Pavement (JTG F40-2004)". The waste cement concrete regenerated aggregate warm-mix asphalt mixture of Example 1 is the same as that of Example 1, only the particle size specifications of the waste cement concrete regenerated aggregate and the weight parts of each raw material used are different.

[0051] 1. In this embodiment, six grades of waste cement concrete recycled aggregates are selected: recycled aggregates with a particle size of 19-26.5 mm, recycled aggregates with a particle size of 16-19 mm, recycled aggregates with a particle size of 9.5-16 mm, granular The apparent relative densities of recycled aggregates with a diameter of 4.75-9.5 mm, recycled aggregates with a particle size of 2.36-4.75 mm, and recycled a...

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Abstract

The invention provides a waste cement concrete recycled aggregate warm mixed asphalt mixture. The waste cement concrete recycled aggregate asphalt mixture is made from waste cement concrete recycled aggregate, limestone ore powder, asphalt and an asphalt warm mix agent. Two road environmental-protection technologies of waste cement concrete recycling aggregation and foam asphalt warm mixing are combined to make up for the shortcoming of possible reduction of the pavement performance of an asphalt mixture, caused by simple use of an asphalt warm mixing technology, in order to make the pavement performance index of the warm mixed asphalt mixture not lower than that of a hot mixed asphalt mixture, so building waste pollution is reduced, natural aggregate resources are saved, the energy consumption and the exhaust gas discharge during the production and the pavement of the hot mixed asphalt mixture are reduced, and construction waste resource recycling and dual environmental protection purposes of energy saving and discharge reduction are achieved. The waste cement concrete recycled aggregate asphalt mixture can be used for paving the upper layer, the middle layer and the lower layer of the asphalt pavement.

Description

technical field [0001] The invention relates to an asphalt mixture, in particular to a waste cement concrete recycled aggregate warm-mix asphalt mixture and a preparation method thereof. Background technique [0002] With the continuous expansion of my country's urban construction scale, the annual production of construction waste is increasing at a rate of 8%. In my country, the resource utilization capacity of construction waste is very low, and the national average comprehensive utilization rate is less than 5%, which is far lower than that of Europe, America and Japan. and other developed countries. Most of the construction waste is untreated, and it is directly transported to the suburbs or villages for disposal by open-air stacking or landfilling, which requires a lot of construction costs such as land acquisition fees, garbage removal and transportation fees, and disposal fees; at the same time, the removal and stacking process Problems such as the dispersion of dust ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B18/16C04B111/20
CPCC04B26/26C04B2111/0075C04B2111/29C04B18/16C04B20/0076C04B14/28C04B2103/0068Y02A30/30Y02W30/91
Inventor 王知乐姜荣斌
Owner TAIZHOU POLYTECHNIC COLLEGE
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