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http://dx.doi.org/10.14481/jkges.2020.21.10.5

Engineering Characteristics of CLSM with Regard to the Particle Size of Bottom Ash  

Lee, Yongsoo (Department of Civil Engineering, Korea National University of Transportation)
Kim, Taeyeon (Department of Civil Engineering, Korea National University of Transportation)
Lee, Bongjik (Department of Civil Engineering, Korea National University of Transportation)
Publication Information
Journal of the Korean GEO-environmental Society / v.21, no.10, 2020 , pp. 5-10 More about this Journal
Abstract
As the demand for the recycling of industrial by-products increases due to various environmental restrictions including the prohibition of ocean disposal, various studies regarding the recycling of industrial by-products are currently being carried out. One of the industrial by-product, coal ash is produced from thermal power generation; studies on the recycling of fly ash have been actively carried out and it is currently recycled in various fields. In the case of bottom ash, however, only a portion of the total amount generated is primarily processed into a particle size of 2~4mm or less than 2mm to be used for gardening purpose and light weight aggregate and so on. The remaining amount is buried at ash disposal sites. Therefore, various studies are needed to develop measures to use bottom ash. This study aimed at identifying the optimal particle size and mixing ratio of bottom ash to be used as CLSM aggregate. To this end, it evaluated the usability of bottom ash as CLSM aggregate, by investigating the flowability and strength change characteristics of CLSM produced with regard to the mixing ratio of weathered granite soil and bottom ash, particle size of bottom ash to be mixed and soil binder addition rate and conducting a heavy metal leaching test.
Keywords
Bottom ash; CLSM; Flowability; Uniaxial compressive strength;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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