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http://dx.doi.org/10.14190/JRCR.2020.8.3.333

Review: Utilization of Coal Bottom Ash for Concrete and Mortar  

Kim, Hyeong-Ki (Department of Architectural Engineering, Chosun University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.8, no.3, 2020 , pp. 333-348 More about this Journal
Abstract
The present review dealt with the state-of-art on utilization of coal bottom ash in cement-based concrete and mortar. Two types of bottom ashes generated from pulverized coal combustion and circulating fluidized-bed combustion systems have been considered. The production process, chemical and physical characteristics of both ashes, and the methodology of utilization in various cement composites are summarized. The effect of bottom ash on various properties of concrete, such as workability, strength, and durability, were reviewed from the literature. In addition, the environmental and economic aspects of utilizing bottom ash in concrete are analyzed to explore the perspectives of bottom ash utilization, and through this, the future of the utilization was considered. The effect of bottom ash on the performance of concrete and mortar was greatly depended on the condition, pretreatment, and processing of the ash. Additional processing such as crushing might contribute to stimulating the utilization in this field. In particular, if economic support is possible in terms of policy, utilization rate is expected to be improved.
Keywords
Coal bottom ash; Concrete; Mortar; Utilization; Pulverized coal combustion; Circulating fluidized-bed combustion;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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