Ion-leaching properties of blast furnace slag and fly ash under alkaline conditions

Author(s): Woonggeol Lee, Kyungnam Kim, Seungmin Kang, Myongshin Song
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 2
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 527-532
Total Pages: 6
Language : English

Abstract: The hydration of fly ash blended with ordinary Portland cement (OPC) is generally studied, it is difficult to obtain
conclusive results on the reactions of fly ash. In order to accelerate the hydration of OPC mixed with fly ash, the
aluminosilicate glasses of the fly ash must be destroyed. The concentrations of sodium hydroxide solution, used as alkaline
condition materials, were 0 and 1.0 M. The leaching concentrations of calcium, aluminium, and silicon ions were measured
by inductively coupled plasma atomic emission spectroscopy. To confirm the reaction products formed by the leached ions
with Ca(OH)2, X-ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetry–differential thermal
analyses were conducted.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00

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