عنوان : Ground Improvement Techniques and Geosynthetics: IGC 2016 Volume 2
نویسنده : T Thyagaraj
از : Lecture Notes in Civil Engineering 14
انتشار : Springer Singapore, Year: 2019
شابک (ISBN ) : ۹۷۸-۹۸۱-۱۳-۰۵۵۸-۰;۹۷۸-۹۸۱-۱۳-۰۵۵۹-۷
تعداد صفحات : ۴۰۳
فرمت : PDF
The book comprises select proceedings of the 2016 annual conference of the Indian Geotechnical Society (IGC 2016), with technical papers on the theme “Ground Improvement and Geosynthetics”. The papers cover a wide range of topics, including chemical modification using admixtures, microbial-induced carbonate precipitation, geopolymers, fly ash and other industrial wastes, modification using geosynthetic materials such as natural and synthetic fibers, expanded polystyrene (EPS) geofoam, prefabricated vertical drains, geosynthetic encased-granular columns and mechanical densification through sand columns. This book is a valuable reference for researchers and practicing engineers alike.
Geopolymer soil column is one of the advancements in Ground improvement techniques. The study is aimed at the comparison of Geopolymer soil column and untreated sand in the load carrying capacity and settlement behavior of footing resting on loose sand. The effects of Geopolymer soil column and untreated sand are investigated by conducting experimental studies. The parameters involved in this study include soil column spacings and curing periods. A load test was carried out on a model footing resting on sand with Geopolymer soil column and untreated sand. Load test is repeated on the footing with Geopolymer soil column at varying curing periods of 7, 14, and 28 days. The load settlement curve for different curing periods day were compared. It was observed that the Geopolymer soil column has high bearing capacity improvement factor compared to untreated sand. Settlement also considerably reduced while using Geopolymer soil column. A parametric study has been carried out to compare the settlement of Geopolymer soil column and untreated sand by finite element modelling using PLAXIS 2D Software and the results are agreeable with the experimental results.
Keywords: Geopolymer , Column spacings , Curing periods , Bearing capacity Settlement