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Monitoring ground improvement using in situ tests in Guayaquil, Ecuador

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dc.contributor.author Falquez, Daniel
dc.contributor.author Ripalda Zenck, Francisco
dc.contributor.author Besenzon, Davide, Tutor
dc.date.accessioned 2022-06-08T16:39:25Z
dc.date.available 2022-06-08T16:39:25Z
dc.date.issued 2020
dc.identifier.citation Falquez, D.,Ripalda, F. (2020). Monitoring ground improvement using in situ tests in Guayaquil, Ecuador [Article de magister]. Escuela Superior Politécnica del Litoral es_EC
dc.identifier.uri http://www.dspace.espol.edu.ec/handle/123456789/54011
dc.description.abstract This paper describes the use of the seismic dilatometer test (SDMT) and the piezocone test (CPTu), to assess the effects of ground improvement in preventing liquefaction damage at a wastewater treatment plant in Guayaquil, Ecuador. The ground improvement consisted of 15 m-long, 0.55 m-diameter and 2 m-spacing stone columns built with vibro-replacement technique. The tests were carried out both in natural and in treated soils, in order to compare the variation of the geotechnical parameters in the analyzed deposits, also combining DMT and CPTu results in sandy deposits to estimate the overconsolidation ratio (OCR), the at-rest lateral earth pressure coefficient (K0) and the ratio between the constrained modulus and the corrected cone resistance (M/qt). Due to the presence of liquefiable soils at the trial site, the test results were then used to evaluate the pre and post-treatment liquefaction severity indexes, using different methods based on CPT, DMT, combined CPT-DMT, and shear wave velocity (VS) approaches for a design ground motion. The results show a certain sensitivity of the DMT over the CPTu tests to the ground improvement into the layer composed by sands and sandy silts, while VS values show a limited increase in the treated area es_EC
dc.language.iso en es_EC
dc.publisher ESPOL. FICT es_EC
dc.subject Ground improvement es_EC
dc.subject Liquefaction es_EC
dc.subject In situ testing es_EC
dc.title Monitoring ground improvement using in situ tests in Guayaquil, Ecuador es_EC
dc.type Article es_EC


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