Time- stress-compressibility characteristics of cementitiously stabilized organic soils

Effect of cementitious stabilization on the stress-compressibility characteristics of
three different South Florida organic soils were evaluated in this study. The
objectives of the research were to (l) determine if the secondary compression
characteristics of organic soils and peats can be stabilized with (a) cement only,
(b) binary blends of cement/slag (C-S), cement/gypsum (C-G), and cement/cement-kiln-dust (C-CKD) and (c) ternary blend of cement-slag-gypsum in equal proportions; (ll) quantify the effectiveness of cementitious stabilization by evaluating the time-stress-compressibility (t-log σ'v - e) relationship in terms of the Cα / Cc ratio; and (lll) provide some guidelines for selecting optimum dosage of cementitious materials in deep mixing methods when organic soils and peats are encountered. It was concluded that cementitious mixes containing various waste materials is effective in controlling the secondary compression behavior of organic soils, and therefore should be considered in deep mixing methods as a sustainable practice.