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Manufacturing method of PVA (Polyvinyl Acetate) modified semi-flexible asphalt pavement material

A semi-flexible asphalt mixture technology, applied in the field of traffic roads, can solve problems such as poor low-temperature performance, achieve the effects of improving bending deformation capacity, improving deformation mismatch problems, and increasing strength

Inactive Publication Date: 2017-01-25
SHANXI PROVINCIAL RES INST OF COMM
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: how to solve the problem of poor low temperature performance of traditional semi-flexible asphalt pavement materials

Method used

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Embodiment Construction

[0013] 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.

[0014] (1) Taking the preparation of 1000g of PVA modified cement-based grouting material of the present invention as an example, the raw materials and proportions used are as follows:

[0015] P.O 42.5 Ordinary Portland Cement 593.17g

[0016] Water 354.61g

[0017] Calcium sulfoaluminate TD-U expansion agent 51.58g

[0018] PVA-2099 modifier 0.64g

[0019] (2) According to the above-mentioned mass distribution ratio of the present invention, each component material is weighed, and the PVA modified cement-based grouting material is prepared first: PVA-2099 is soaked in an appropriate amount of water (the concent...

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PUM

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Abstract

The invention relates to the field of traffic roads and in particular relates to a manufacturing method of a PVA (Polyvinyl Acetate) modified semi-flexible asphalt pavement material. The manufacturing method comprises: pouring a PVA modified cement-based pouring material into a matrix asphalt mixture, wherein the volume ratio of the PVA modified cement-based pouring material and the matrix asphalt mixture is 20 percent; after curing for 28 days, obtaining the PVA modified semi-flexible asphalt pavement material. According to the PVA modified cement-based pouring material, common Portland cement accounts for 57.500 percent to 64.516 percent, water accounts for 34.375 percent to 35.484 percent, a swelling agent accounts for 0 to 5.161 percent and a PVA modifier accounts for 0 to 3.125 percent. By adopting the manufacturing method of the PVA modified semi-flexible asphalt pavement material, the problem of a traditional semi-flexible asphalt pavement material that a low-temperature performance is not good is solved.

Description

technical field [0001] The invention relates to the field of traffic roads, in particular to a method for preparing a PVA modified semi-flexible asphalt pavement material. 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 existence of its joints, it seriously affects driving comfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B14/043C04B24/2623C04B22/142
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张敏
Owner SHANXI PROVINCIAL RES INST OF COMM
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