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- W592495462 abstract "The desire for a deep understanding of premature failure of flexible pavements caused by longitudinal cracking led to the study presented in this paper. The study presented here developed a material model to estimate expansive subgrade strength and stiffness variations under seasonal drying and wetting cycles by using easy-to-measure moisture content together with soil index properties. Finite element analysis (FEA) models were then used to perform parametric studies to study the behavior of expansive soil shrinkage cracking and to further quantify the moisture content thresholds for initiation and propagation of longitudinal cracking, and the possible locations of such cracks. Two types of field instrumentation systems including moisture probes with data logger and field matric suction sensors were carefully installed at five representative sites in Texas with high plasticity index (PI greater than 25) clayey subsoils (Houston, Forth Worth, San Antonio, Paris and Atlanta) to determine the accuracy of the predicted longitudinal cracking distress. The estimated critical moisture contents and longitudinal crack locations showed good agreement with field measurements. Compared to prevailing suction-based approaches, the new moisture-content based approach seems to provide engineers an efficient way to understand the complex problem of damages caused by expansive subsoil, not limited to low-volume roads, but other lightweight infrastructures alike, to minimize extreme weather susceptibility, lower cost, and improve overall structure performance." @default.
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- W592495462 date "2015-01-01" @default.
- W592495462 modified "2023-09-24" @default.
- W592495462 title "Case History of Using Moisture-Content Based Approach to Predict Low-Volume Roads Longitudinal Shrinkage Cracking Failure" @default.
- W592495462 hasPublicationYear "2015" @default.
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