Author : Neethu Sukumaran 1
Date of Publication :18th April 2019
Abstract: Collapsible soil is one of the problematic soils in geotechnical engineering. They exhibit sudden volume change and loss of strength when inundated. The present study results experimental investigations on passive earth pressure on walls retaining reinforced collapsible soil. The objective of the study is to examine the effect of soil collapse on passive earth pressure in dry and wet conditions. A laboratory model prepared for determining the decrease in passive earth pressure upon wetting induced collapse of the backfill. The collapsible soil is reinforced with geotextile for increasing the passive earth pressure coefficient. The results indicate that the inclusion of geotextile helps to reduce the collapse potential and thereby increase passive earth pressure. The spacing of geotextile is also taken as a parameter. From the results it was found that as the spacing of geotextile is directly proportional to the collapse potential and inversely proportional to the passive earth pressure coefficient.
- Nguyen,N.&Hanna,A.(2017)“Experimental Investigation on At-Rest Earth Pressure Acting on Walls Retaining Collapsible Soil Subjected to Inundation,” PanAm Unsaturated Soils GSP 302,ASCE,PP 59-68.
- Hanna, A., & Diab, R. (2017). Passive Earth Pressure of Normally and Over consolidated Cohesionless Soil in Terms of Critical-State Soil Mechanics Parameters. International Journal of Geomechanics, 17(1),04016028.doi:10.1061/(ASCE)gm.1943- 5622.0000683.
- Fang, Y.-S., Ho, Y.-C., & Chen, T.-J. (2002). Passive Earth Pressure with Critical State Concept. Journal of Geotechnical and Geoenvironmental Engineering, 128(8),651–659.doi:10.1061/(ASCE)1090- 0241(2002)128:8(651).
- Ali, N. A. (2015). Performance of partially replaced collapsible soil– Field study. Alexandria EngineeringJournal,54(3),527 532.doi:10.1016/j.aej.2015.05.002
- Medero, G. M., Schnaid, F., & Gehling, W. Y. (2009). “Odometer Behavior of an Artificial Cemented Highly Collapsible Soil.” Journal of Geotechnical and Geoenvironmental Engineering, 135(6),840– 843.doi:10.1061/(ASCE)1090-0241(2009)135:6(840)