Abstract
Soft clays with high water content are normally treated by cement or cement-based solidifying agent for utilization as geomaterial in the construction of soil structures. The improvement effect of soft clays greatly depends on the water content and content of solidifying agent. It is important to evaluate accurately the improvement effect of clay with different physical or chemical properties for making high-quality improved clay at a low cost. In this study, two types of solidifying agents, namely ordinary Portland cement (OPC) and fly ash-containing solidifying agent (DF), were used for five kinds of clays with different liquid limits (wL) and ignition loss. A cone penetration test was performed on the improved clays to obtain cone index. A new parameter, KL, for representing an effect of content of solidifying agent was introduced by considering liquid limit. An empirical equation of the cone index (qc) with the modified content of solidifying agent (KL) was proposed based on the experimental results. It was clear that parameters on the qc-KL empirical equation relate to liquid limit, ignition loss, and type of solidifying agent.
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The authors would like to acknowledge the financial support, facility, and equipment provided by the Nagasaki University WISE Programme Research Grant.
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Zhang, Z., Omine, K. & Flemmy, S.O. Evaluation of the improvement effect of cement-stabilized clays with different solidifying agent addition and water content. J Mater Cycles Waste Manag 24, 2291–2302 (2022). https://doi.org/10.1007/s10163-022-01477-8
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DOI: https://doi.org/10.1007/s10163-022-01477-8