飽和粘性土の一次元圧密試験における一次および二次圧密挙動

A series of oedometer tests were conducted on saturated cohesive soil. The height of specimen was varied as 1, 2 and 4cm. At the specimen's bottom, pore-water pressure was measured to judge the time at which the primary consolidation ends, tEOP. and vertical load was also measured to estimate the friction mobilizing on the side surface of the specimen. The primary and secondary consolidation strains developing before tEOP were estimated based on the secondary compression rate, C􀄮, which was determined from the strain vs. time relationships after tEOP. The estimated primary consolidation strain was compared with the strain predicted by Terzaghi's theory of consolidation.