A practical methodology for the determination of failure envelopes of fiber-reinforced cemented sands

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• 作者：Nilo Cesar Consoli ; Bernardo Scapini Consoli ; Lucas Festugato
• 关键词：Fiber-reinforcement ; Sand ; Cement ; Mohr&ndash ; Coulomb failure envelope ; Unconfined compressive strength ; Splitting tensile strength
• 刊名：Geotextiles and Geomembranes
• 出版年：November, 2013
• 年：2013
• 卷：41
• 期：Complete
• 页码：50-54
• 全文大小：887 K

文摘

This study aims to estimate the Mohr-Coulomb failure envelope of fiber-reinforced and non-reinforced artificially cemented sands based on splitting tensile strength (蟽_t) and unconfined compressive strength (蟽_c) of such materials, without the necessity of carrying out triaxial testing. Based on the concept previously established by Consoli et聽al. that the 蟽_t/蟽_c relationship is unique for each specific soil, fiber and cement agent, it is shown that the effective angle of shearing resistance of a given fiber-reinforced or non-reinforced cemented sandy soil (蠒鈥? is dependent of the 蟽_t/蟽_c ratio of such geomaterials and that effective cohesion intercept (c鈥? is a direct function of the unconfined compressive strength (蟽_c) [or splitting tensile strength (蟽_t)] and 蟽_t/蟽_c ratio of the fiber-reinforced/non-reinforced improved soil. Finally, the concepts presented herein are successfully checked for glass fiber-reinforced/non-reinforced silty sand treated with ordinary Portland cement, considering weak, moderate and strong cementation levels.