... independently by Carneiro and Akazawa, in 1943. Tensile strength, tensile elastic modulus, plastic modulus are measured by stress-strain curve recorded in testing specimen by Brazilian test. This article serves as show measured tensile elastic modulus and tensile plastic modulus of specimen in basalt zone...

... and covers about 70 % of the earth's crust. The shale also covers a significant portion of the Chittagong region, Bangladesh. The field strength (hammer value) for the shale of the Bhuban Formation showed a more considerable variation than that for other rocks in the region, revealing a high potential...

..., waveform, and confining pressure. The present study discusses results from a series of laboratory cyclic polyaxial strength tests performed on a M20 grade concrete model rock. The tests were performed under monotonic as well as cyclic conditions under load-controlled environment. For cyclic tests...

... first increases and then decreases showing an inverted U-shaped, resulting in a similar law of rock damage but a contrary law of strength; the corresponding elastic energy ratio is U-shaped of decreasing first and then increasing, causing the structural failure changes from dynamic to static...

... element model, and can better describe the dynamic mechanical behaviour of rock. There is obvious rate dependency in the dynamic strength of rock material, and the dynamic compressive strength of rock increases with the increase of strain rate. The macro fracture of rock mass is the result...

... characteristic leaching procedure (TCLP). CK (cement alone), SBC and BC groups showed a poor immobilization effect toward Cr(VI). Nevertheless, FBC, FSBC, and RBC significantly reduced the leaching of Cr(VI). Replacement of cement by these composite materials significantly reduced the mechanical strength...

... publishing iop conf reservoir geomechanics displacement mechanism mining stability spall strength Abstract Coal wall spall causes serious mining difficulties, especially in deeply buried longwall working faces with a weak roof. To study the deformation and failure mechanisms of the coal wall...

... of sandstone in underground engineering is of great significance to its application in mining and civil engineering[1]. Sandstone is a brittle material, and its characteristic is that its tensile strength is much lower than its compressive strength. Therefore, both compressive strength and tensile strength...

... integrity coefficient geological subdiscipline borehole strength geology resistivity conference integration geologist reservoir characterization environmental science 861 correlation reservoir geomechanics subsurface equation society iop publishing iop conf construction...

... conference construction reservoir geomechanics environmental science 861 displacement deep foundation pit reservoir characterization excavation excavation deepening thickness basement strength 11th Conference of Asian Rock Mechanics Society IOP Publishing IOP Conf. Series: Earth...

... that the spalling strength in low-porosity rocks can be associated with the initiation of internal cracks in the sample. However, very limited studies are available that looks at the effect of all the principal stresses on rock crack initiation stress threshold. This paper investigates the previously ignored effect...

... on mechanical properties of coarse granular materials was compared. An improved DDA was used to simulate the triaxial tests under different confining pressures, The numerical results show that the deviatoric stress-strain curves of the three discrete forms become steeper and the peak strength also increases...

... Abstract The deformation of the surrounding rock in roadways occurs because of the coupling effect of water and rock, which decreases the strength of the surrounding rock. The microscopic pore structure in the rock mass develops through and develops into microcracks, which further the rock...

... geomechanics society iop publishing iop conf conference rock mechanic assumption fracture hydraulic fracturing geological subdiscipline mechanism interface geologist cutter environmental science 861 engineering university cutter-rock interface dem simulation strength 11th Conference...

... Abstract The limestone of the South China Lower Permian Qixia & Maokou Group usually features high purity, high strength, and poor weathering, while the limestone of the Qixia & Maokou Group at margin of the Chuan-Dian Paleouplife of southeast China is characterized by obvious strength...

... Abstract Dynamic fault strength τ (rock friction in the broad sense) and its evolution with seismic slip and slip rate are among the most relevant parameters in earthquake mechanics. Given the large slip rate (1 m s −1 on average), displacement (up to tens of meters), effective stress (tens...

... wellbore is also analyzed. The results show that the deep brittle shale has high mechanical strength, is highly brittle, and developed bedding fractures. Under the condition of low confining pressure, the stress-strain curve of shale before fracture is mainly elastic deformation, and the plastic mechanical...

... Abstract Sample disturbances in offshore wind power projects are inevitable and much higher than onshore projects. Unconsolidated undrained shear tests (UU) results could underestimate the in-situ strength of clay, which would lead to a huge waste in foundation design. Piezocone penetration...

... particle strength geology hydrate dem investigation geological subdiscipline geologist reservoir geomechanics environmental science 861 society iop publishing iop conf methane hydrate dem simulation breakage stiffness flow assurance creep conference boundary particle...

... and samples with fractures at different inclination angles (30°, 45°, and 60°), to investigate the mechanical behavior and failure mechanism of fractured rock samples. According to the experimental results, a more inclined angle of the fractures would dramatically reduce the compressive strength of the sample...