Results 1 to 10 of about 3,514,101 (170)

Modification of the Brazilian indirect tensile strength formula for better estimation of the tensile strength of rocks and rock-like geomaterials

open access: yesJournal of King Saud University: Engineering Sciences, 2022
Rock mechanical properties are essential input in many design applications in petroleum, mining, environmental and civil engineering. The most reliable source for these properties is the laboratory tests.
Musaed N.J. AlAwad
doaj   +5 more sources

WATER SATURATION INDUCED CHANGES IN THE INDIRECT (BRAZILIAN) TENSILE STRENGTH AND THE FAILURE MODE OF SOME IGNEOUS ROCK MATERIALS

open access: yesGeoScience Engineering, 2020
The present study concentrates on water induced strength reduction and variation of the failure mode in indirect (Brazilian) tension tests of several igneous rock materials under three moisture cases of oven-dry, air-dry and fully saturated states.
Serdar YASAR, Eren KOMURLU
doaj   +2 more sources

MODELS TO ESTIMATE BRAZILIAN INDIRECT TENSILE STRENGTH OF LIMESTONE IN SATURATED STATE

open access: yesRudarsko-geološko-naftni Zbornik, 2016
There are a number of methods of estimating physical and mechanical characteristics. Principally, the most widely used is the regression, but recently the more sophisticated methods such as neural networks has frequently been applied, as well. This paper
Zlatko Briševac, Trpimir Kujundžić
doaj   +4 more sources

Tensile strength and failure behavior of rock-mortar interfaces: Direct and indirect measurements

open access: yesJournal of Rock Mechanics and Geotechnical Engineering
The tensile strength at the rock-concrete interface is one of the crucial factors controlling the failure mechanisms of structures, such as concrete gravity dams.
Ghasem Shams   +2 more
doaj   +3 more sources

Effects of 3D deformation and nonlinear stress–strain relationship on the Brazilian test for a transversely isotropic rock

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2023
To improve the accuracy of indirect tensile strength for a transversely isotropic rock in the Brazilian test, this study considered the three-dimensional (3D) deformation and the nonlinear stress–strain relationship.
Juhyi Yim   +3 more
doaj   +1 more source

Numerical Simulation of the Effect of Loading Angle on Initial Cracks Position Point: Application to the Brazilian Test

open access: yesApplied Sciences, 2021
The Brazilian Test is the most used test to determine the indirect tensile strength for brittle materials like concrete. It has been observed that the success of the test depends on the cracks initiation point position and therefore the arch loading ...
Meriem Fakhreddine Bouali   +1 more
doaj   +1 more source

A new approach for understanding the mechanism of wellbore strengthening theory

open access: yesJournal of King Saud University: Engineering Sciences, 2022
To achieve fast, safe and economical drilling operations through formations containing natural fractures or vugs, all fractures and vugs must be perfectly sealed using proper fractures seal materials in a process called wellbore strengthening.
Musaed N.J. AlAwad
doaj   +1 more source

Experimental investigation of the mechanical properties of Alfas stone [PDF]

open access: yesFracture and Structural Integrity, 2017
This paper focuses on the experimental investigation of the mechanical properties of the Alfas natural building stone. Two series of uniaxial compression tests and indirect tensile tests (Brazilian tests) were performed in order to determine the uniaxial
Kostas N. Kaklis   +4 more
doaj   +2 more sources

MODELING THE BRAZILIAN TENSILE STRENGTH TEST OF LIGNITE FROM PESTEANA OPENPIT MINE USING THE COMBINED FINITE-DISCRETE ELEMENT METHOD – FDEM [PDF]

open access: yesFiabilitate şi Durabilitate, 2023
Strength is the property of rocks to keep their internal structure unmodified and not deform under the action of a stress. Tensile strength is defined as the maximum tensile stress the rock can endure until its failure and it is usually lower than ...
Ionela Cristina MĂCEŞARU   +2 more
doaj  

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