Journal Published Online: 17 March 2022
Volume 11, Issue 1

Conversion of Municipal Solid Waste Incineration Bottom Ash in Asphalt Pavements

CODEN: ACEMF9

Abstract

Municipal waste incineration (MSWI) is a widely used method in solid waste treatment that can reduce the generation of landfill waste. Meanwhile, MSWI-bottom ash (BA) can be employed as a substitute for aggregates in asphalt mixtures. This study aims to assess the feasibility and influence of MSWI-BA substitution for natural limestone aggregates in asphalt mixtures to reduce garbage accumulation and save natural resources. Through conventional methods, the energy dispersive X-ray spectrometer, and scanning electron microscope experiments, the physical and chemical features of MSWI-BA and natural limestone aggregate were analyzed. A Marshall mix design determined the optimum asphalt content of asphalt mixtures with various MSWI-BA contents. The road performances of asphalt mixtures with different MSWI-BA contents were studied using rutting, low-temperature splitting, freeze–thaw splitting, and Marshall immersion tests. The experiment results show that adding MSWI-BA to asphalt mixtures would decrease water stability. High-temperature stability is excellent when adding 10 % MSWI-BA, and low-temperature crack resistance is best at 20 % MSWI-BA content. MSWI-BA could be recycled in the asphalt pavement, and 10 % is recommended.

Author Information

Yan, Kezhen
School of Civil Engineering, Yango University, Fuzhou, Fujian Province, China College of Civil Engineering, Hunan University, Changsha, Hunan Province, China
Li, Lanlan
School of Civil Engineering, Yango University, Fuzhou, Fujian Province, China College of Civil Engineering, Hunan University, Changsha, Hunan Province, China
Long, Zhengwu
School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
Xiao, Leling
Department of Civil and Environmental Engineering, The University of Edinburgh, Edinburgh, UK
Liu, Kai
School of Automobile and Traffic Engineering, Hefei University of Technology, Hefei, Anhui Province, China
Zhou, Wujun
School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
You, Lingyun
School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
Ou, Jianliang
School of Civil Engineering, Yango University, Fuzhou, Fujian Province, China
Wu, Shenghua
Department of Civil, Coastal, and Environmental Engineering, University of South Alabama, Shelby Hall 3109, Mobile, AL, USA
Pages: 17
Price: $25.00
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Stock #: ACEM20210032
ISSN: 2379-1357
DOI: 10.1520/ACEM20210032