The Bearing Capacity of a Strip• Footing on the . I Horizontal Top of a Reinforced Sand-Cement Slope

Abstract

Civil engineering structures are sometimes forced to be constructed on, or adjacent to slopes. These include the foundations of fairly routine highway bridge abutments, retaining walls and transmission towers. The bearing capacity of such foundations is Jess than that for similar foundations rested on flat • ground having identical properties. In addition, the few theories, in the literature, which predict the bearing capacity of these foundations give widely varying answers for identical footing locations and soil conditions. Accordingly, the importance of researches relating to evaluating bearing capacity of structural foundations built on slopes has been grown. The objective of this research is directed owards investigating, experimentally and theoretically, the behaviour of sand-cement slope under the effect of a strip load placed on its horizontal top. The intent of the massive soil-cement placement is to provide a material with physical properties similar to sand stone, thereby increasing the bearing capacity and minimizing the danger of settlement and differential settlement along the slope. The research was founded on two main parts. The fJrSt part is the experimental one, and consists of two stages. In the first stage, an experimental work was done to investigate sand-cement density, strength and mechanical characteristics at different cement percentages. Series of compaction, unconfmed and triaxial tests were used to investigate the effect of cement percent on the previous characteristics.