Comportamento hidráulico e mecânico de um solo residual tratado com cal

Content Provider	Semantic Scholar
Author	Benetti, Mozara
Copyright Year	2015
Abstract	BENETTI, M. Comportamento hidráulico e mecânico de um solo residual tratado com cal. 2015. Dissertação (Mestrado em Engenharia Civil) – Programa de PósGraduação em Engenharia Civil, UFRGS, Porto Alegre. The approach of the hydraulic behavior associated with the mechanical behavior of a material is of utmost importance. The technique of treating soil with lime has been used successfully in geotechnical engineering, improving the characteristics of the soil, which is a highly variable and complex material, and does not always meet the required needs. In that sense, this study has for objective to quantify the influence of amounts of lime and of the porosity on the hydraulic and mechanical behavior a sandy silt soil stabilized with lime, checking the suitability of the use de voids/ lime ratio in estimating of the hydraulic conductivity, unconfined compression strength (qu) and tensile strength (qt). For that, number of hydraulic conductivity tests and strength tests were carried out for soil-hydrated lime blends, with lime contents of 5%, 7% e 9%, dry unit weight of 16,0 kN/m3, 17,2 kN/m3 and 18,5 kN/m3, 28 days as curing time. It was observed that the porosity of the mixture is a parameter influence on the hydraulic conductivity measured. The results show the unconfined compressive and the splitting tensile strength increasing potentially with the reduction of its porosity. It was found a single qt/qu relationship equal to 0,13, being independent of the porosity/lime ratio. The methodology suggested by Consoli (2014), was adequate for determining of MohrCoulomb failure parameters (effective cohesion intercept effective angle of shearing resistance) for a ratio [/(Liv) 0,12 =35. The voids/lime ratio, defined as the ratio between the porosity of the compacted mixture and volumetric lime content, adjusted by a power, demonstrated to be the most appropriate parameter to assess the hydraulic and mechanical behavior of the soil-lime mixture studied. Key-words: soil-lime; hydraulic conductivity; strength; porosity; voids/lime ratio.
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Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article