Behavior of Different Footing Shapes on Sandy Layer Improved with Cement Underlain by Weak Clay Soil

SAMIR IBRAHIM, SHALABY (2015) Behavior of Different Footing Shapes on Sandy Layer Improved with Cement Underlain by Weak Clay Soil. In: Third International Conference on Advances in Civil, Structural and Mechanical Engineering - ACSM 2015, 28-29 December, 2015, Bangkok, Thailand.

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Abstract

One of the most important problems are to construct on soft clay soil. The utilization of a cemented top layer increases bearing capacity, reduces displacement at failure, and change soil behavior to a brittle behavior. The objective of this research paper is directed towards investigating experimentally the effect of footing shapes on the bearing capacity and settlement of weak clay soil overlain by cemented or uncemented sandy soil. Two percent of cement are used as reinforcement for sandy soils. A laboratory experimental work program was carried out on circular, rectangular, and square model footings. The studied parameters include footing shape, thickness of replacement sand layer, and percent of added cement. Experimental results show that the shape of the footing has a pronounced improving effect on soil bearing capacity and its settlement. Circular footing gives the highest improvement while rectangular footing gives the least one. The critical depth of cementing upper sand layer after which increasing depth of cementation has no effect on increasing bearing capacity was determined.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: soil bearing capacity, layered soil, weak clay,cemented sand replacement, soil reinforcement, footing shape.
Depositing User: Mr. John Steve
Date Deposited: 29 Mar 2019 12:19
Last Modified: 29 Mar 2019 12:19
URI: http://publications.theired.org/id/eprint/1054

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