Changes in Shear Strength of Bottom ash through the Particle Breakage

입자파쇄에 따른 Bottom ash의 전단강도 변화

Yun, Tae-Kang;Son, Young-Hwan;Park, Jae-Sung;Noh, Soo-Kack;Bong, Tae-ho;Kim, Dong-Geun

  • Received : 2015.02.10
  • Accepted : 2015.11.05
  • Published : 2015.11.30


Bottom ash and fly ash are by-product from thermoelectric power plants. Fly ash is recycled to various field. However, though an output of bottom ash have increased each year, most of them is reclaimed in ash landfill. It is necessary to find a solution that bottom ash is recycled economically and know characteristics of bottom ash to recycle. It is goal to investigate engineering properties of bottom ash, especially the particle breakage, to recycle that. Bottom ash was crushed by impact method according to compaction energy and then compared with or original sample and crushed it in terms of particle size distribution and characteristics of strength. In result, after crushed it, particle finer was increased, especially 2~0.85 mm size, than original. It was displayed a tendency that internal friction of crushed sample was decreased but cohesion of it was not. Therefore, it is important to investigate the engineering properties of bottom ash in terms of the particle breakage to use construction materials for various field.


Bottom ash;Friction angle;Cohesion;Particle breakage


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Supported by : 한국연구재단