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|Title:||Improving soft peaty soil by grouted stone columns Punggol waterway project, Singapore||Authors:||Chew, S.H.
|Issue Date:||2011||Citation:||Chew, S.H.,Tan, C.Y.,Yap, T.Y.,Chua, K.E.,Ng, K.C.,Khong, Y.C.,Goh, P.L.,Toh, L.R. (2011). Improving soft peaty soil by grouted stone columns Punggol waterway project, Singapore. 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering : -. ScholarBank@NUS Repository.||Abstract:||As part of the new water front town in Punggol, Singapore, a 4.2km long waterway will be constructed to connect two existing river reservoirs. The waterway is about 4m deep, with a varying width of 24m to 80m. The geological history record shows that some branches of ancient streams and rivers run through part of the site. Thus the proposed Punggol Waterway is to be constructed on difficult soil conditions like thick layers of soft marine clay or soft peaty clay, inter-bedded with some loose sandy silty soil, which poses slope stability concern, during and after the construction. Hence, ground improvement is required to stabilize the slope of the waterway. A number of schemes of ground improvement were proposed and installed. Grouted Stone Column (GSC) is proposed and installed as the ground improvement technique for a major section of the project. This paper describes the design principles of GSC solution, as well as the results of trial and construction and Quality Assurance (QA)/Quality Control (QC) procedures to ensure the quality and continuity of the installed GSCs.||Source Title:||14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering||URI:||http://scholarbank.nus.edu.sg/handle/10635/91298|
|Appears in Collections:||Staff Publications|
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