Matrix asphalt mixture gradation applicable to semi-flexible asphalt roads

A technology for asphalt mixture and asphalt pavement, applied in the field of master asphalt mixture grading, can solve the problems of poor stability and low filling rate of asphalt mixture, achieve high stability value, full filling, and avoid road surface particles drop. Effect

Inactive Publication Date: 2017-01-11
SHANXI PROVINCIAL RES INST OF COMM
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  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: how to solve the problems of low perfusion rate and poor stability of semi-flexible asphalt pavement material matrix asphalt mixture

Method used

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  • Matrix asphalt mixture gradation applicable to semi-flexible asphalt roads
  • Matrix asphalt mixture gradation applicable to semi-flexible asphalt roads
  • Matrix asphalt mixture gradation applicable to semi-flexible asphalt roads

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Embodiment Construction

[0012] The following content is only a preferred embodiment of the present invention, and does not limit the present invention in any form; without departing from the content of the technical solution of the present invention, any simple modifications, equivalent changes and modifications all belong to the technical solution of the present invention In the range.

[0013] (1) Take representative samples from each ore silo actually used in the project, and pass the indoor screening test to obtain the gradation of each silo.

[0014] (2) Determine the blending ratio of mineral materials in each silo by trial blending method, and its synthetic gradation is shown in Table 1. The synthetic gradation of the parent asphalt mixture involved in Table 1 is not the optimal gradation of the parent asphalt mixture, but only the synthetic gradation after the blending ratio is determined according to the mineral material gradation of each silo in the actual project of this embodiment.

[00...

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Abstract

The invention belongs to the technical field of pavement materials in highway engineering and particularly relates to matrix asphalt mixture gradation applicable to semi-flexible asphalt roads. Matrix asphalt mixture aggregates are prepared to form matrix asphalt mixtures being 2.8%, 3.2%, 3.6% and 4.0% in asphalt-aggregate ratio respectively; stability or splitting strength are taken as indexes for measurement of stability and splitting strength of the matrix asphalt mixtures under different asphalt-aggregate ratios; a relation curve of between the asphalt-aggregate ratios and the stability and splitting strength of the matrix asphalt mixtures is further drawn, and the asphalt-aggregate ratio at a peak is taken as an optimal asphalt-aggregate ratio of the matrix asphalt mixtures. The matrix asphalt mixture gradation applicable to the semi-flexible asphalt roads has the advantage of high stability.

Description

technical field [0001] The invention belongs to the technical field of pavement materials in highway engineering, and in particular relates to a matrix asphalt mixture gradation suitable for semi-flexible asphalt pavement. Background technique [0002] With the continuous development of my country's transportation industry, the traffic volume and traffic axle load are increasing, which makes the performance requirements of pavement materials increasingly high. As asphalt is a viscoelastic temperature-sensitive material, when the temperature is high in summer, the asphalt pavement is prone to rutting under the repeated action of vehicle loads, especially at the entrances and exits of expressway toll stations, route intersections, and sections with long longitudinal slopes. The road surface rutting is more serious, which greatly affects the driving comfort and safety. Compared with asphalt pavement, cement concrete pavement does not have such problems, but due to the existenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B20/00C04B111/70
CPCC04B26/26C04B20/0076C04B2111/70
Inventor 张晓燕成志强孔繁盛段丹军王国安兰建丽贾蓉蓉牛彦峰宋彩娜
Owner SHANXI PROVINCIAL RES INST OF COMM
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