期刊
INTERNATIONAL JOURNAL OF PAVEMENT RESEARCH AND TECHNOLOGY
卷 15, 期 5, 页码 1155-1165出版社
SPRINGERNATURE
DOI: 10.1007/s42947-021-00079-1
关键词
Cold patch asphalt mixtures; Workability; Marshall stability; Water stability; Molding intensity
资金
- National Natural Science Foundation of China [51904113]
- project of Jiangsu provincial Six Talent Peaks [JZ-011]
- 2019 Huaishang Talent Plan Program
- Open Fund of Guangxi Key Laboratory of Road Structure and Materials [2019gxjgclkf003]
- Huai'an Natural Science Research Program [HABZ201915]
- Jiangsu Planned Projects for Postdoctoral Research Funds [2020Z422]
- open fund for Jiangsu Engineering Laboratory of Structure Assembly Technology on Urban and Rural Residence, Huaiyin Institute of Technology [JSZP201905]
This paper investigates the preparation and performance of cold patch asphalt mixtures (CPAMs) by mixing cold patch asphalt liquid (CPAL) with mineral mixture. The study examines the workability, Marshall stability, freeze-thaw splitting strength, and cohesion of three types of CPAMs. Experiments conducted on pothole repairs in Feidong show that CPAMs have good water stability and meet the requirements of hot mix asphalt (HMA) in low-rain regions. The study also observes the effects of compaction and additives on the measured properties of CPAMs.
The cold patch asphalt mixtures (CPAMs) have been manufactured by mixing the cold patch asphalt liquid (CPAL) with type LB-13 mineral mixture. The workability, Marshall stability, Freeze-thaw splitting strength and cohesion of three types of CPAMs were tested in the laboratory. The potholes were repaired using CPAMs on several sites in S101 provincial highway at Feidong. The CPAMs were sampled to measure the bulk density and Marshall stability, and the volume of air voids (VV) of those specimens was calculated. The results indicated that the Brookfield viscosity of CPAL affected the workability of the CPAMs. The Marshall stability of three types of CPAMs was only 3.07, 3.80 and 4.28 kN, respectively. However, the CPAMs had better water stability and met the requirements of hot mix asphalt (HMA) in low-rain regions referring to JTG F40-2004. The VV decreased and Marshall stability increased with the action of the secondary compaction and the volatilization of additives. Beyond 3 months, the Marshall stability of the compacted mixtures tends to be stable. The Marshall stability of type A and B CPAMs changed from 5 to 6 kN, while that of type C CPAM varied between 4 and 5 kN. The products met the requirements of dense-graded HMA on the low-grade highway. Overall, the prepared CPAMs can be used to repair pavement potholes from the perspective of material properties and molding intensity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据