Please use this identifier to cite or link to this item: https://rda.sliit.lk/handle/123456789/3578
Full metadata record
DC FieldValueLanguage
dc.contributor.authorNanayakkara, D.A.S.-
dc.contributor.authorThilakarathne, T.M.D.-
dc.contributor.authorThilakasiri, H.S.-
dc.date.accessioned2023-11-13T10:30:34Z-
dc.date.available2023-11-13T10:30:34Z-
dc.date.issued2023-03-25-
dc.identifier.issn2961 5011-
dc.identifier.urihttps://rda.sliit.lk/handle/123456789/3578-
dc.description.abstractOrganic soil has weak shear strength properties in its natural texture. However, a significant gain in strength can be achieved in such soils by increasing the effective stresses using preloading techniques. This research focuses on the organic soil deposits in Sri Lanka by analyzing the data from Colombo- Katunayake Expressway (CKE) project and Elevated Highway (EH) project spanning from New Kelani Bridge to Athurugiriya. As a developing country, Sri Lanka is facing a huge challenge due to its limited land available towards the infrastructure development. Therefore, construction should also be directed on organic soils despite of considering its weak shear strength properties as the soil can be modified to enhance its properties. To predict the strength gain of organic soils subjected to effective stresses, empirical correlations are used such as Skempton and Bjerrum equation (1957). As depicted in such correlations, the ratio of undrained shear strength and effective overburden pressure is observed against the Plasticity Index (PI) using field data. From the results of the analysis, it is discovered that using empirical correlations is very conservative for organic soils within the Sri Lankan context. Particularly, use of empirical correlations is very safe but beyond the economic considerations. In the extension of the research, an argument is generated to validate the use of PI to predict normalized shear ratio. To validate the argument, SPSS statistical software was used to perform the multiple regression analysis having PI, natural void ratio and organic content as the independent variables. From the statistical analysis, it was found that using only PI to predict the strength gain is not conservative for Sri Lankan organic soils subjected to effective stresses. These generated results are identical to conclusions drawn governing the inorganic soils in the state of Missouri (2011).en_US
dc.language.isoenen_US
dc.publisherSri Lanka Institute of Information Technologyen_US
dc.relation.ispartofseriesProceedings of the SLIIT International Conference On Engineering and Technology,;VOL 2-
dc.subjectShear Strengthen_US
dc.subjectPlasticity Indexen_US
dc.subjectOrganic Soilen_US
dc.subjectSri Lankaen_US
dc.subjectColombo Katunayake Expresswayen_US
dc.subjectElevated Highwayen_US
dc.subjectEffective Stressen_US
dc.titleStrength Gain of Organic Soil Deposits Subjected to Increase in the Effective Stressen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.54389/PLFC6183en_US
Appears in Collections:Proceedings of the SLIIT International Conference on Engineering and Technology Vol. 02, 2023

Files in This Item:
File Description SizeFormat 
strength gain of organic soil deposits.pdf559.05 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.