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Damping Properties of Frictional Soils via Thermo-Controlled Constant Water Content Resonant Column Testing
Material damping is attributed to energy loss in a soil mass subject to cyclic loadings, such as that generated by traffic loads, earthquake events, or vibration due to construction activities. It can be calculated based on laboratory testing using, for instance, resonant column and cyclic simple shear devices. Regardless of the measurement and testing method, the damping ratio values are expected to be identical; however, experimentally, it is challenging to obtain a unique damping ratio for a given soil. This work presents the results from thermo-controlled resonant column (RC) tests conducted on statically compacted samples of silt (ML) and clayey sand (SC) to investigate damping properties of frictional soils under controlled moisture (constant-water), confinement, and ambient temperatures, up to 60°C (140°F). Damping ratios were assessed via frequency response curves and logarithmic free-vibration decay curves. The results provide preliminary yet valuable insights into the critical effect that rising temperatures might have on the damping properties of compacted frictional soils as evaluated via resonant column testing.
Damping Properties of Frictional Soils via Thermo-Controlled Constant Water Content Resonant Column Testing
Material damping is attributed to energy loss in a soil mass subject to cyclic loadings, such as that generated by traffic loads, earthquake events, or vibration due to construction activities. It can be calculated based on laboratory testing using, for instance, resonant column and cyclic simple shear devices. Regardless of the measurement and testing method, the damping ratio values are expected to be identical; however, experimentally, it is challenging to obtain a unique damping ratio for a given soil. This work presents the results from thermo-controlled resonant column (RC) tests conducted on statically compacted samples of silt (ML) and clayey sand (SC) to investigate damping properties of frictional soils under controlled moisture (constant-water), confinement, and ambient temperatures, up to 60°C (140°F). Damping ratios were assessed via frequency response curves and logarithmic free-vibration decay curves. The results provide preliminary yet valuable insights into the critical effect that rising temperatures might have on the damping properties of compacted frictional soils as evaluated via resonant column testing.
Damping Properties of Frictional Soils via Thermo-Controlled Constant Water Content Resonant Column Testing
Davoodi Bilesavar, Roya (author) / Hoyos, Laureano R. (author)
Geo-Congress 2022 ; 2022 ; Charlotte, North Carolina
Geo-Congress 2022 ; 421-430
2022-03-17
Conference paper
Electronic Resource
English
| British Library Conference Proceedings | 2022
| British Library Conference Proceedings | 2022