Application of Porous Concrete to a Structural Foundation in Soft Ground
In this study, porous concrete is applied to the stone column, which is a structural foundation in soft ground. The porous concrete reinforces the upper portion of the stone column and forms a composite foundation to restrain bulging collapse. To function as a foundation material properly in soft ground, concrete must be permeable to expel subsurface ground water outside and have sufficient compressive strength to reduce settlement, which is a critical factor for the foundation design. From laboratory experiments, the compressive strength increases and the permeability decreases as the amount of cement increases. To evaluate the settlement, full-scale tests and finite element analyses using porous concrete were performed. As a result, it was confirmed that the use of a stone column reinforced by porous concrete was very effective in reducing the settlement of the foundation in soft ground.
Young Won Chang, Nack J. Kim and Chong Soo Lee
H. T. Kim et al., "Application of Porous Concrete to a Structural Foundation in Soft Ground", Advanced Materials Research, Vols. 26-28, pp. 895-898, 2007