Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)
Online ISSN : 2185-6516
ISSN-L : 2185-6516
Paper (In Japanese)
STRENGTH PREDICTION MODEL FOR DREDGED SOIL IMPROVED BY BASIC OXYGEN FURNACE SLAG
Takeshi KOKADODaisaku SUDAYuzo AKASHI
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2020 Volume 76 Issue 4 Pages 405-410

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Abstract

 This study aims to build a strength prediction model for dredged soils improved by basic oxygen furnace slag. The mechanism for improving the strength of dredged soils is considered that amorphous silica in dredged soils and portlandite in basic oxygen furnace slag dissolve, and H4SiO4(aq) and Ca++ form calcium silicate hydrate (C-S-H). Based on this hypothesis, equations to calculate reaction mass of C-S-H are proposed. The relationship between calculated reaction mass of C-S-H and uniaxial compressive strength of improved soils cured for 91 days shows a good correlation.

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© 2020 by Japan Society of Civil Engineers
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