Articles
  • Study on the pozzolanic activity of finely ground bottom ash for cement replacement
  • Jeong-Bae Leea,*, Seong-Soo Kima, Jin-Yong Leeb and Jae-Suk Ryouc
  • a Department of Civil Engineering, Daejin University, 1007 Hoguk-ro, Pocheon-si, Gyeonggi-Do 11159, Republic of Korea b KMB. CO., Ltd, #46, 3-Gil, 2-Gongdan, Miyang-Myon, Ansung-Si, Gyeonggi-Do, Republic of Korea c Department of Civil & Environmental Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 04763, Korea
Abstract
This study experimentally investigated the properties of bottom ash in cement specimens. The performances of hardened cement test specimens, prepared with unground or finely ground bottom ash, fly ash, or ordinary Portland cement, were compared. The fineness of bottom ash increased with grinding time. Testing in mortar mixes revealed that the compressive strengths of both wet and dry finely ground bottom ash increased with increasing fineness. The microstructural density of bottom ash increased and the porosity decreased as the grinding fineness increased. Finely ground bottom ash showed strong pozzolanic activity, demonstrating its applicability as a cement replacement.

Keywords: Bottom ash, Pozzolanic reaction, Waste materials, Filler, Particle size.

This Article

  • 2017; 18(4): 291-300

    Published on Apr 30, 2017

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