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Liquid‐liquid equilibrium data for the polystyrene‐cyclopentane binary system and the polystyrene‐cyclopentane‐cyclohexane ternary system were measured by observing the cloud points at the temperature range in which the systems showed their lower critical solution temperature. The experimental liquid‐liquid equilibria were correlated successfully by the UNIFAC‐FV model with adjustable parameters.

Geotechnical utilization of construction wastes has been performed extensively in construction sites, and fluidized soils which is one of the geotechnical utilizations of construction sludges have been widely applied in construction works. In particular, the fluidized soils are used by filling construction works with long-distance and construction works at complicated underground spaces. Therefore, the fluidized soils that higher fluidity is possessed (that is a super fluidized soil) are required in their development. This paper discusses to be developed a super fluidized soils. Specifically, a mechanical characteristic and fluidity performance of developed super fluidized soil are clarified experimentally. The developed super fluidized soil satisfies qualities requested for fluidized soils as a result also it is confirmed that high-fluidity is possessed.

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