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- W4303985928 abstract "The moisture content of roadway subgrade may increase substantially due to upwards water migration and/or downwards invasion of rainfall, resulting in the softening of the subgrade and the deterioration of the roadway, characterized by the occurrence of rutting and/or cracking. Wicking geosynthetic with wicking fibers can remove the moisture in subgrade actively to improve the serviceable performance significantly. However, there is no analytical solution to quantify the benefit of the wicking geosynthetic in improving roadway performance. In this study, the solution of a multi-layered elastic geosynthetic-stabilized soil system was derived to quantify the elastic responses. Thus, a mechanistic-empirical method was developed for analyzing the roadway performance (i.e., rutting). In the analysis, layers adjacent to the wicking geosynthetic with a reduced moisture content was considered as layers with improved material properties. The results show that the analytical method developed in this study is capable of quantifying the benefit of wicking geosynthetic in stabilizing roadways, with the influence depth and the moisture reduction as known inputs. The benefits attributing to the reinforcing effect and wicking effect can be quantified separately according to this analytical method. The base-subgrade interface is a better location for the wicking geosynthetic since both the resilient moduli of the base course and subgrade were improved due to the wicking effect and the reinforcing effect is also considerable. For the paved roadway structure analyzed in this study, the wicking effect contributed 18–30%, while the reinforcing effect contributed 8–11% when placing the geosynthetic at the interfaces. • Elastic solution for a ten-layered system with wicking geosynthetics was derived. • Wicking geosynthetics could be placed at any interfaces of the layered system. • Performances of roadways with wicking geosynthetics were quantified. • Wicking effect and reinforcing effect of the geosynthetic could be separated." @default.
- W4303985928 created "2022-10-10" @default.
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- W4303985928 date "2023-02-01" @default.
- W4303985928 modified "2023-09-26" @default.
- W4303985928 title "Analytical method for quantifying performance of wicking geosynthetic stabilized roadway" @default.
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- W4303985928 doi "https://doi.org/10.1016/j.geotexmem.2022.09.005" @default.
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