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原文传递 FLEXIBLE PAVEMENT REINFORCED WITH PLANER REINFORCEMENT - EXPERIMENTAL STUDY
题名: FLEXIBLE PAVEMENT REINFORCED WITH PLANER REINFORCEMENT - EXPERIMENTAL STUDY
正文语种: 英文
作者: G NARENDRA GOUD; B UMASHANKAR
作者单位: Assistant Professor, Dept. of CE-MVSR Engg. College, and Doctoral Student, Dept. of Civil Engineering, IIT- Hyderabad, Telangana; Associate Professor, Department of Civil Engineering, Indian Institute of Technology Hyderabad, Telangana
关键词: flexible;interaction;force;interface;settlement;different;geogrid;improve;material;sites
摘要: Reinforcing flexible pavement with planer reinforcement in the form of geogrid and Hexagonal Steel Wire Mesh (HSWM) in flexible pavements can improve their performance compared to unreinforced pavements. Quality aggregates for constructing base and subbase layers of pavements are not readily available at all the construction sites and the introduction of reinforcement can provide a sustainable solution in such sites. In this study, large-scale model experiments are performed to obtain (a) load-settlement response of reinforced flexible pavements, and (b) interface properties of reinforcement pavement base/subbase materials. The load improvement factor of reinforced pavement with respect to unreinforced pavement can be used in the design of reinforced flexible pavements. While the interaction coefficients of reinforcement with pavement materials can be used in numerical modeling of reinforced pavement systems. The load improvement factors are found to vary from 1.1 to 1.9 for the two reinforcement types considered in the study corresponding to different settlement ratios. The interaction coefficients range from 0.73 to 1.45 for geogrid and HSWM reinforced interfaces under normal stresses ranging from 30 kPa to 90 kPa. The interface shear modulus of different interfaces considered in this study range from about 19,773 kPa/m to 57,337 kPa/m corresponding to a normal stress equal to 90 kPa.
出版年: 2019
期刊名称: Indian Highways
卷: 47
期: 5
页码: 11-18
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