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Title:
CONSTRUCTION METHOD FOR UPPER SURFACE COURSE MADE OF STEEL SLAG-ASPHALT MIXTURE
Document Type and Number:
WIPO Patent Application WO/2023/020630
Kind Code:
A1
Abstract:
Provided in the present invention is a construction method for an upper surface course made of a steel slag-asphalt mixture. The construction method comprises the following steps: preparation of construction materials, acceptance of a middle surface course, construction of a binding course, mixing of a steel-asphalt mixture, transportation of a steel slag-asphalt mixture, paving of the steel slag-asphalt mixture, rolling of the steel slag-asphalt mixture, arrangement and treatment of construction joints, and inspection and acceptance, wherein the rolling of the steel slag-asphalt mixture comprises preliminary rolling, re-rolling and final rolling, the rolling speeds of preliminary rolling and re-rolling are 4-5 km/h, and the rolling speed of final rolling is 2-3 km/h. The construction method of the present invention has the characteristics of a simple construction process and high construction efficiency; moreover, the binding power and shear strength of the steel slag-asphalt mixture used in the upper surface course and the aging resistance, wear resistance, etc. of an asphalt pavement are improved to a certain extent compared with those of a common gravel mixture, such that the service level of a road can be effectively improved.

Inventors:
WANG SHIGEN (CN)
GUO HONGKUN (CN)
LI YONG (CN)
PENG TIANJUN (CN)
WANG ZHIYONG (CN)
WANG BEN (CN)
ZHANG ZHAO (CN)
ZHANG CHENG (CN)
Application Number:
PCT/CN2022/122073
Publication Date:
February 23, 2023
Filing Date:
September 28, 2022
Export Citation:
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Assignee:
THE FIRST ENG CO LTD OF CTCE GROUP (CN)
CHINA RAILWAY NO 4 GROUP CO LTD (CN)
International Classes:
E01C7/18
Domestic Patent References:
WO2018128208A12018-07-12
WO2012098406A22012-07-26
Foreign References:
CN114775357A2022-07-22
CN110258236A2019-09-20
CN113931032A2022-01-14
CN113529528A2021-10-22
CN112195710A2021-01-08
CN108911590A2018-11-30
US20030211313A12003-11-13
Attorney, Agent or Firm:
BEIJING HECHUANG ZHIXIN PATENT AGENCY CO., LTD (CN)
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