Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Study of Mechanical Improvement of Hydrogel-Treated Sandy Soil
The superior toughness and mechanical strength of hydrogel bring much attention to improve the ductility and dynamic loading resistance of geo-materials. The goal of this study was to apply Ca-alginate hydrogel, which is an ironic gelation hydrogel to improve the ductility and mechanical behavior of sandy soil. In this study, the Ca-alginate hydrogel was selected due to its environmentally friendly properties. Up to 0.4% (by weight) of hydrogel was used to mix with sandy materials for their mechanical behavior and ductility improvement. The effects of reaction time, sodium alginate content, and curing temperature on mechanical behaviors of hydrogel-treated sand were studied through unconfined compression tests and scanning electron microscopy. Time is an important treatment consideration. The optimum reaction time was found to be 3 days, and the UCS of Ca-alginate treated sand could achieve 260 kPa in wet condition. The UCS tended to increase with the increase of sodium alginate content, but hydraulic conductivity decreased with the increase of sodium alginate content. The UCS of 0.4% hydrogel-treated sand can reach 430 kPa.
Study of Mechanical Improvement of Hydrogel-Treated Sandy Soil
The superior toughness and mechanical strength of hydrogel bring much attention to improve the ductility and dynamic loading resistance of geo-materials. The goal of this study was to apply Ca-alginate hydrogel, which is an ironic gelation hydrogel to improve the ductility and mechanical behavior of sandy soil. In this study, the Ca-alginate hydrogel was selected due to its environmentally friendly properties. Up to 0.4% (by weight) of hydrogel was used to mix with sandy materials for their mechanical behavior and ductility improvement. The effects of reaction time, sodium alginate content, and curing temperature on mechanical behaviors of hydrogel-treated sand were studied through unconfined compression tests and scanning electron microscopy. Time is an important treatment consideration. The optimum reaction time was found to be 3 days, and the UCS of Ca-alginate treated sand could achieve 260 kPa in wet condition. The UCS tended to increase with the increase of sodium alginate content, but hydraulic conductivity decreased with the increase of sodium alginate content. The UCS of 0.4% hydrogel-treated sand can reach 430 kPa.
Study of Mechanical Improvement of Hydrogel-Treated Sandy Soil
Wen, Kejun (Autor:in) / Li, Yang (Autor:in) / Lin, Li (Autor:in)
International Foundations Congress and Equipment Expo 2021 ; 2021 ; Dallas, Texas
IFCEE 2021 ; 188-195
06.05.2021
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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