Pushed-in PPMT for Settlement Prediction: Insights from Indoor Test Pits in Florida Fine Sands
Pushed-in PPMT for Settlement Prediction: Insights from Indoor Test Pits in Florida Fine Sands
This study evaluates the performance of three in-situ tests, pushed-in PENCEL Pressuremeter (PPMT), Flat Dilatometer Test (DMT), and Cone Penetration Test (CPT), for predicting shallow foundation settlements in fine Florida sands. Controlled indoor experiments were conducted using Osteen sand (weak) and Starvation Hill sand (strong), compacted at 90%, 95%, and 100% modified Proctor density in segmented test pits. Plate Load Tests (PLT) provided benchmark settlement measurements. The pushed-in PPMT provided settlement predictions closely aligned with PLT results across all conditions, demonstrating its suitability for fine Florida sands. In comparison, the CPT tended to overestimate settlements due to its reliance on ultimate capacity, while DMT underestimated them because of high modulus values at a minimal membrane expansion. These findings highlight the reliability and practicality of the pushed-in PPMT for geotechnical applications in fine sand and silty sand soils.
Brhane Ygzaw; P. J. Cosentino; Brett Parrish; Anuar Akchurin
8th International Symposium on Pressuremeters (ISP2025)
Applications in Foundation Engineering
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