Review: Application of coal bottom ash as aggregate replacement in highway embankment, acoustic absorbing wall and asphalt mixtures

International Technical Postgraduate Conference

Mohammed, Syakirah Afiza^1 ; Karim, Mohamed Rehan^1

Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur

50603, Malaysia^1

关键词: Acoustic absorbing materials;    Annual production;    Engineering industries;    Environmental concerns;    Environmental problems;    Highway embankments;    Physical and chemical properties;    Recoverable resource;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/210/1/012025/pdf
DOI  :  10.1088/1757-899X/210/1/012025

来源: IOP

【 摘 要 】

Worldwide annual production of coal bottom ash waste was increased in the last decade and is being dumped on landfill over the years. Its improper disposal has become an environmental concern and resulted in a waste of recoverable resources. There is a pressing and on-going need to develop new recycling methods for coal bottom ash. The utilization of coal bottom ash in highway engineering is one of the options to reduce the environmental problems related to the disposal of bottom ash. The present review describe the physical and chemical properties of coal bottom ash waste and its current application as highway embankment material, as acoustic absorbing material and as aggregate replacement in asphalt mixtures. The purpose of this review is to stimulate and promote the effective recycling of coal bottom ash in highway engineering industry.