Paredes-Cerón, Andrea C.

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Evaluación experimental del efecto de la compactación en la resistencia a corto plazo de arena limosa (SM) A-2-4 (PR-108)
(2009-12) Paredes-Cerón, Andrea C.; Camacho-Padrón, Beatriz I.; College of Engineering; Pando López, Miguel A.; Ramos Cabeza, Ricardo; Department of Civil Engineering; Portela Gautier, Genock
Compaction is a ground improvement technique most commonly used in Civil Engineering. Specification for compaction determine the required moisture content and maximum dry density that the soil should reach in the field to satisfy the requirements in resistance and maximum allowable deformation. However, soils compacted under these specifications will have a response different than the expected. This investigation includes an experimental evaluation of the undrained shear strength parameters of a compacted cohesive soil. This study involved 84 compaction tests and 51 unconsolidated undrained triaxial tests for soil samples prepared at different moisture contents under 3 different levels of compaction using a mold reduced in size. Final results from this study have shown that specimens compacted out of the specified range of compaction for embankment construction in Puerto Rico (85% DMS) experienced a reduction in cohesion of 60%, a 73% reduction in the angle of internal friction, and a change in the stress-strain behavior: from brittle to ductile.