Experimental study on properties of concrete containing molten slag from inte- grated coal gasification combined cycle as fine aggregate

Author(s): Ryotaro Kobayashi, Hiromi Fujiwara, Masanori Maruoka, Yuto Yamanaka
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) New Generation of Construction Materials
Editor(s): Marijana Serdar, Nina Štirmer, John Provis
ISBN: 978-2-35158-217-6,
Vol 1. ISBN: 978-2-35158-223-7
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 288-295
Total Pages: 8
Language : English

Abstract: Recently in Japan, the rate of coal-fired power generation among the total quantity of generated power has been increasing due to the accident of nuclear plant by the East Japan Earthquake. Among the fossil fuels, coal is economical because the price and supply are stable. However, coal-fired power generation has a large impact on the environment so the commercial application of integrated coal gasification combined cycle (IGCC) has being promoted. IGCC is a highly efficient power generating method combining a steam turbine and a gas turbine. However, it is necessary to establish effective utilization of coal gasification molten slag discharged from IGCC in order to promote the IGCC technology. In this paper, it is investigated the fresh properties and hardened properties of concrete containing the coal gasification molten slag as fine aggregate. As for the result, in comparison with the concrete using conventional fine aggregate, it is confirmed that the fluidity improves, the bleeding increases a little, the compressive strength and bending strength decrease slightly and the drying shrinkage much reduces as containing ratio of increases. As a result, it is found the possibility that the coal gasification molten slag is usable as fine aggregate for concrete.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00