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Bearing capacity of circular footings resting on unsaturated desiccated soils

Lozada, Catalina; Thorel, Luc; Caicedo, Bernardo (ICE PublishingReino Unido, 2019)

When a clayey soil is exposed to desiccation, water evaporates from the surface. During dry periods, the soil may suffer from shrinking phenomena, the saturation degree decreases and formation of cracks begins. At the same ...
Estado del arte en la impermeabilización de túneles en roca, casos, aplicaciones y recomendaciones

Ruiz Piraguata, Luis Alejandro (Escuela Colombiana de Ingeniería Julio GaravitoMaestría en Ingeniería Civil con Énfasis en Geotecnia, 2018)

En el documento se describen los conceptos generales de geología e hidráulica, las actividades de investigación y exploración del agua. Se presenta el contexto histórico de los túneles; características constructivas, se ...
Impacto geotécnico del diésel en un suelo arcilloso de baja plasticidad

Rodríguez Cuervo, Lady Sofía; Amórtegui Gil, José Vicente (Escuela Colombiana de Ingeniería Julio Garavito, 2018)

When oil spills occur in the soil due to gravity and capillary forces, these fluids move vertically and horizontally through the strata; then the following question arises: what happens in the geotechnical properties and ...

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Bearing capacity of circular footings resting on unsaturated desiccated soils
...
Lozada, Catalina | 2019

When a clayey soil is exposed to desiccation, water evaporates from the surface. During dry periods, the soil may suffer from shrinking phenomena, the saturation degree decreases and formation of cracks begins. At the same time, an overconsolidated soil appears at the surface of the deposit. Some previous studies devoted to this problem have highlighted the impact of cracks on desiccated profiles. However, these analyses have been carried out without considering the suction effect. The present study examines the specific case of the cracked soils found in the area of Sabana de Bogotá in Colombia. In this research, some soil models are tested using the Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux's geotechnical centrifuge. In this paper, the experimental procedure is first described. Then, the experimental results for the bearing capacity are presented. Finally, an analysis of the bearing capacity is carried out by considering the matric suction effect. This analysis compares different theoretical methods used to calculate the bearing capacity of shallow foundations resting on unsaturated soils with the experimental results obtained using the centrifuge. The results of the analysis underline the necessity of considering suction for the computation of the bearing capacity of unsaturated soils.

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Estado del arte en la impermeabilización de túneles en roca, casos, aplicaciones y recomendaciones
...
Ruiz Piraguata, Luis Alejandro | 2018

En el documento se describen los conceptos generales de geología e hidráulica, las actividades de investigación y exploración del agua. Se presenta el contexto histórico de los túneles; características constructivas, se exponen las directrices y pautas para el control y medición de las tasas de infiltración. Además se exponen las técnicas para el control del agua subterránea; los elementos instalados como parte de los revestimientos, materiales y equipos utilizados. También se describen las actividades de caracterización de materiales y resultados de los ensayos de laboratorio en especímenes de concreto y adiciones de elementos de cristalización y minerales, para obtener elementos impermeables, y casos históricos.

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Impacto geotécnico del diésel en un suelo arcilloso de baja plasticidad
...
Rodríguez Cuervo, Lady Sofía | 2018

When oil spills occur in the soil due to gravity and capillary forces, these fluids move vertically and horizontally through the strata; then the following question arises: what happens in the geotechnical properties and the mineralogical composition of a clay soil of low plasticity with the presence of diesel? To answer this question, laboratory tests with controlled variables were required. Thus, the methodology involved taking the samples to the air and then adding water and diesel treatment of 0%, 1%, 3% and 6%, with a one-week exposure time under controlled temperature and humidity conditions. Laboratory tests were done to determine moisture content, specific gravity of solids, Atterberg limits and unconfined compressive strength. The analysis of mineralogy with X-ray diffraction (XRD), dust method, was performed for samples with 0% and 6% diesel treatment. It is important to specify that the effect of temperature on the performance of the tests was evaluated, if the presence of diesel in the soil is unknown, a temperature of 110 ± 5 ° C is used, and if the presence of diesel is known in the soil a temperature of 50 ± 5 ° C is used. The results of the investigation verified the changes in the geotechnical properties and the uncertainty in the estimation of the moisture content and the specific gravity of the solids, but the mineralogical composition was not affected; however, the percentage of micas was reduced.

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Repositorio Digital

ListarA - Grupos de Investigación por tema "Geotechnical engineering"

Bearing capacity of circular footings resting on unsaturated desiccated soils

Estado del arte en la impermeabilización de túneles en roca, casos, aplicaciones y recomendaciones

Impacto geotécnico del diésel en un suelo arcilloso de baja plasticidad

Envíos recientes

Bearing capacity of circular footings resting on unsaturated desiccated soils

Estado del arte en la impermeabilización de túneles en roca, casos, aplicaciones y recomendaciones

Impacto geotécnico del diésel en un suelo arcilloso de baja plasticidad

ListarA - Grupos de Investigación por tema "Geotechnical engineering"

Bearing capacity of circular footings resting on unsaturated desiccated soils ﻿

Estado del arte en la impermeabilización de túneles en roca, casos, aplicaciones y recomendaciones ﻿

Impacto geotécnico del diésel en un suelo arcilloso de baja plasticidad ﻿

Envíos recientes

Bearing capacity of circular footings resting on unsaturated desiccated soils

Estado del arte en la impermeabilización de túneles en roca, casos, aplicaciones y recomendaciones

Impacto geotécnico del diésel en un suelo arcilloso de baja plasticidad

Bearing capacity of circular footings resting on unsaturated desiccated soils

Estado del arte en la impermeabilización de túneles en roca, casos, aplicaciones y recomendaciones

Impacto geotécnico del diésel en un suelo arcilloso de baja plasticidad