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A design method for the ratio of construction waste to asphalt mixture

A technology for asphalt mixture and construction waste, which is used in construction, on-site coagulation pavement, roads, etc., can solve the problems of different properties of construction waste and lack of sufficient consideration of the characteristics of construction waste, and achieves significant environmental protection. Ensure possibility and feasibility, expand the effect of application

Active Publication Date: 2017-06-16
湖州南浔交通水利投资建设集团有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main reason is that when the traditional Marshall design method is used for the design of construction waste asphalt mixture, the characteristics of construction waste are not fully considered.
Moreover, construction waste is a non-standard commodity, and the nature of each batch of construction waste is different

Method used

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  • A design method for the ratio of construction waste to asphalt mixture
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  • A design method for the ratio of construction waste to asphalt mixture

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Embodiment

[0058] Below by a mixing ratio design implementation example, further parameter the present invention.

[0059] Design the gradation with AC-20 as the target, and design the mix ratio of construction waste asphalt mixture. The mix ratio of the asphalt mixture is designed for the lower layer of the secondary road.

[0060] Selection of Raw Materials for Asphalt Mixture

[0061] (1) Selection of mineral material specifications

[0062] According to the asphalt mixture design target - AC-20 asphalt mixture;

[0063] Aggregate specifications: 0-3mm construction waste fine aggregate, 0-3mm stone chips, 3-5mm crushed stone, 5-15mm crushed stone, 10-20mm crushed stone, limestone mineral powder.

[0064] (2) Asphalt is 70#A grade petroleum asphalt.

[0065] Asphalt mixture gradation design. The gradation design is carried out with the median value of the AC-20 gradation curve as the target value of the gradation design; the gradation curve is prepared from a new aggregate, and th...

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Abstract

The invention provides a proportioning design method of an asphalt mixture through construction waste. The construction waste asphalt mixture designed through the method is applicable to asphalt surfaces of highways and urban roads. Recycling of the construction waste is achieved, and pollution caused by urban and rural solid waste is reduced. The proportioning design of the construction waste asphalt mixture is conducted through a three-stage design method. Firstly, the mixture gradation design is conducted through a substitution method; and secondly, the best asphalt use amount of the asphalt mixture is determined through a new design method. The second step is divided into three steps that (1) feasible regions of the best asphalt use amount in different gradation schemes are determined through a Fort shellen leakage analysis test and a Cantabro raveling test; (2) according to the two end boundary values and the intermediate value of the feasible regions of the asphalt use amount, the asphalt mixture is formed through three asphalt use amounts; and (3) whether the asphalt mixture meets the basic performance requirements or not is judged. Finally, the asphalt mixture is formed under the condition of the best asphalt use amount, and pavement performance detection is conducted.

Description

technical field [0001] The invention is a design method for applying construction waste to asphalt mixture. By using the method, the blending ratio of construction waste fine aggregate in asphalt mixture can be determined, and the optimal asphalt dosage can be determined by using a new method, and The comprehensive road performance of asphalt mixture is not lower than that of natural stone asphalt mixture, and the construction waste asphalt mixture designed by this method meets the technical requirements of road and urban road asphalt pavement, and can be applied to asphalt pavement structure. Background technique [0002] With the development of the economy and the progress of the society, the awareness of resource protection has been continuously enhanced, and the country, provinces and cities have paid more and more attention to resource conservation and environmental protection, and various regions have successively introduced measures to limit mining and protect mines. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/26
CPCE01C7/26
Inventor 孙钟良汪道静徐发生张言杨鑫普郭云飞陈飞陈浩
Owner 湖州南浔交通水利投资建设集团有限公司
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