Compression Tests In Rocks
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Geomechanical characterization of carbonates of the Sete Lagoas Formation (Bambuí Group)
Abstract The geomechanical properties of rock masses must be identified to assess their quality and employability; however, the methodologies may differ depending on the lithotype and analytical purposes. The present study aimed to estimate the not-well-known physical-mechanical properties of three types of carbonate rocks (calcarenite, calcilutite, and marb
REM, Int. Eng. J.. Publicado em: 2020-03
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2. Experimental study on granite and the determination of its true strain-rate effect
To accurately determine the true strain-rate effect of granite in split Hopkinson pressure bar (SHPB) tests, systematic experimental studies from quasi-static to dynamic loading on the same batch of granite samples is required. Therefore, firstly, splitting, uniaxial and triaxial compression tests were used to study the mechanical response of granite under d
Lat. Am. j. solids struct.. Publicado em: 2015-08
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3. Estudo de mecanismos de deformação lenta da gipsita bandada da Chapada do Araripe em ensaios de fluência monitorados por emissão acústica / Study of slow deformation mechanisms of the banded gypsum rock of the Chapada do Araripe in creep tests monitored by acoustic emission
Experimental studies by several authors have shown some of the key deformation mechanisms in gypsum, such as plastic flow and pressure dissolution. Even so, there is still sparse knowledge about the mechanical behavior of natural gypsum rocks. Creep mechanisms of the banded gypsum rock of Santana Formation from the Chapada do Araripe (Santana Formation) in c
Publicado em: 2009
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4. Time-dependent behavior of sulphatic rocks of the anhydrite and gypsum / Comportamento dependente do tempo de rochas sulfáticas de anidrita e gipso
The purpose of this thesis is to contribute for the knowledge of time-dependent behavior of sulfatic rocks of anhydrite and gypsum. Emphasis is given to provide straightforward arguments about physical mechanisms responsible for creep observed in some underground excavations in those rocks in Europe. Explanation for this phenomena is not clear yet and studie
Publicado em: 2005
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5. Aproveitamento de resíduos pétreos de marmorarias do Município de São Paulo como agregado para concreto de cimento Portland / Study for the use of stone solid waste, from marble shops of the city of São Paulo, as aggregate of Portland cement concrete
This study presents the activities and technological tests carried through in stony residues of the so called "marble shops", aiming at to verify its application in the elaboration of Portland cement concrete. The first step was a research for attainment a panorama of the type and amount of stony residues produced by marble shops in São Paulo City, selected
Publicado em: 2005
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6. UN ESTUDIO SOBRE EL CONTROL DE LOS ENSAYOS DE COMPRESIÓN EN ROCAS / A STUDY ON THE CONTROL OF COMPRESSION TESTS IN ROCKS / UM ESTUDO SOBRE O CONTROLE DOS ENSAIOS DE COMPRESSÃO EM ROCHAS
Debido al gran número de situaciones que ocurren en la práctica, algunos estudios recientes, especialmente en rocas, han considerado la región pospico de la curva tensión x deformación, como las deformaciones posruptura de pilares de minas y túneles. La dificuldad de esos estudios se debe a que las muestras se colectan en un estado intrínsecamente ine
Publicado em: 2000
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7. NOVA METODOLOGIA DE ENSAIOS TRIAXIAIS DE FOLHELHO / NEW METHODOLOGY FOR TESTING SHALES UNDER TRIAXIAL STRESSES / NUEVAS METODOLOGÍAS DE ENSAYOS TRIAXIALES DE
Shales constitute more than 75% of the drilled rocks in the search for hydrocarbons and an estimated high 90% of wellbore instability problems are credited to their presence. According to Steiger &Leung (1991), more than 600 Million US dollars are spent annually by the oil industry just to corrent the problems due to instabilities. This work presents a new m
Publicado em: 1998