Matric Suction
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Comportamento de estacas escavadas de pequeno diâmetro em solo laterítico e colapsível da região de Campinas/SP / Behavior of bored piles of small diameter in collapsible and lateritic soil in the region of Campinas/SP
This paper aims to study the behavior of bored piles of small diameters, subjected to axial compression loads by static load tests carried out at the Field of Experimental Soil Mechanics and Foundation 2 at Unicamp. The CEMSF2 has a geological profile whose first layer is composed of silty clay, with coluvionar, lateritic, and collapsible features.This study
Publicado em: 2011
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2. Colapsibilidade com sucção controlada de um solo coluvionar e laterítico de Campinas/SP / Collapsibility with controlled suction of a colluvial and lateritic soil from Campinas/SP
This study aims at investigating the collapsibility of coluvionar and lateritic soil by oedometer tests with controlled suction, performed in the laboratory, and by the interpretation of the soilimpregnated thin plates before and after the tests, so as to take into account the differences between natural and "after collapse" structures. The undisturbed soil
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/05/2010
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3. Comportamento hidráulico de um perfil de solo não saturado de Aparecida de Goiânia-GO / Hydraulic behavior of an unsaturated soil profile of Aparecida de Goiania-GO
The hydraulic behavior of a tropical and unsaturated soil profile of Aparecida de Goiânia-GO is presented. The main objective of this research was to contribute to the understanding of hydraulic properties of a tropical soil, with special emphasis on the soil-water characteristic curves and its hysteresis. The research work done was divided into two main pa
Publicado em: 2010
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4. Analysis of mechanical behavior of an expansive soil from the oil province of Urucu-AM for paving / Análise do comportamento mecânico de um solo expansivo da província petrolífera de Urucu-AM para fins de pavimentação
The establishment of transportation infrastructure is critical to the development of the Urucu- AM region, a newly developed oil exploration area in the Amazonas state. The construction of such infrastructure is challenging due to the lack of suitable materials for the construction pavement base and subbase courses and adverse weather conditions, with altern
Publicado em: 2009
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5. Study on factors which affect the accuracy of the filter-paper method. / Estudo sobre fatores que influenciam a acurácia do método do papel-filtro.
The purpose of this work is to verify the susceptibility of the filter-paper method to variations in three experimental parameters: roughness of porous medium (structure of porous matrix), period of exposition of the filter-paper to pore water (equilibration time) and degree of deficiency in contact between the filter-paper and the porous medium. In order to
Publicado em: 2007
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6. Equipment cubic triaxial for rehearsals in saturated soils and no saturated with suction controlled matric / Equipamento triaxial cúbico para ensaios em solos saturados e não-saturados com sucção matricial controlada
In tropical countries, like Brazil, soils in non saturated condition are frequently encountered. Besides, the majority of geotechnical works load the ground according to stress paths in which the three principal stresses are different and vary independently. Therefore, the need to develop equipments able to test in the laboratory non saturated soil samples f
Publicado em: 2007
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7. Influência das condições tridimensionais de tensão e fluxo na estabilidade de um talude em solo não saturado / Influência das condições tridimensionais de tensão e fluxo na estabilidade de um talude em solo não saturado
This research deals with the analysis of a slope failure that took place during the construction of a water gallery, located in Brasilia, DF. The failure occurred in July of 2005 and resulted in the death of one construction worker. The research focuses on the influence of unsaturated soil conditions and on the influence of the two-dimensional and three-dime
Publicado em: 2007
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8. "Estudo do comportamento de um solo residual de gnaisse não saturado para avaliar a influência da infiltração na estabilidade de taludes" / "Study of the behavior of a residual unsatured soil for evaluated of the influence infiltration in the slope stability"
Landslides in tropical soils are often the result of advance of the wetting due to rainfall. This advance results from an increase in pore water pressure, reduction in present soil matric suction, reduction in the shear strength of the soil. This work will present a study related to the shear strength of unsaturated soils, including an experimental study, in
Publicado em: 2006
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9. Influência da dimensão e da sucção matricial no comportamento de fundações superficiais assentes em solo arenoso não-saturado / Size and matric influence in the behavior of shallow foundations in unsaturated sandy soils
The influence of matric suction and size of footings in the bearing capacity and settlement of shallow foundations in unsaturated sandy soils are analyzed. Fourteen plate load tests were performed in the first part of the research. Rigid metallic plates with diameters 0,20, 0,40, 0,80 m and one concrete circular footing with 1,50 m were used in the tests. Al
Publicado em: 2005
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10. Análise paramétrica da infiltração e sua influência na estabilidade de taludes em solo não saturado / Parametric analysis of infiltration and its influence on unsaturated soil slope stability
A parametric study is presented about water infiltration and its repercussion in the safety factor of unsaturated soil slopes. In the analysis it is adopted a reference slope with determined geometry according to the typical inclination for slopes in silty clayey sand, characteristic of the mid-western region of São Paulo State, in Brazil. The parametric an
Publicado em: 2004