mechanical properties of sandstone
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mechanical properties of sandstone

Mechanical properties and failure mode of sandstone ...

2021-3-1  To investigate the mechanical properties and failure mode of sandstone specimens with prefabricated cavities, experiments were conducted on sandstone samples with the borehole axis parallel to different principal stresses and for varying borehole depths and diameters using a novel true triaxial geophysical apparatus.

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Mechanical properties and fracture evolution of sandstone ...

2019-3-1  The mechanical properties, fracture process and failure patterns were investigated by means of stress-strain, strain field and acoustic emission (AE) measurements. Special attentions were paid to the filling effect on crack behavior of pre-holed sandstone and detailed observation of crack development inside inclusions. 2. Test methodology2.1.

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Experimental study of mechanical properties of sandstone ...

2007-2-1  Mechanical properties of rock at high temperature are of importance for structure design and safety assessment in underground rock engineering. Brazilian disc test, axial compressive test and three-point bending test are adopted to determine the tensile strength σ t, uniaxial compressive strength σ c, elastic modulus E and Mode I fracture toughness K IC of sandstone at high temperature. Test ...

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Mechanical Properties and Energy Dissipation of

2021-8-9  For the bearing rock in geotechnical engineering, it is frequently affected by external loads. This paper adopted different upper limits of stress to carry out cyclic loading-unloading on the sandstone specimens to make them in different damage degrees and analyzed the mechanical mechanism of the damaged sandstone under different stresses. Then, the strength change and energy evolution of ...

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Mechanical Properties of Acid-corroded Sandstone Under ...

2020-10-18  Mechanical Properties of the Acid-Immersed Sandstone. The uniaxial compression stress–strain curves of the acid-immersed sandstone (Fig. 2) can be divided into five stages; namely, compaction, elastic, stable crack propagation, unstable crack propagation, and post-peak stages (Fig. 3

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Mechanical Properties of Sandstone under Loading and ...

The mechanical properties of rock mass under unloading conditions are essentially different from that under loading conditions. Triaxial compression tests and unloading confining pressure tests are conducted, and test results show that unloading failure is more brittle, and rock samples suffer more damage under unloading failure. The larger the initial confining pressure is, the easier of ...

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(PDF) Petrographic and Mechanical Properties of

Petrographic and Mechanical Properties of Sandstone from Murree Fo rmation, Jena Kor Area, Peshawar Basin 71 of time that determine whether or not a rock will be

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Weakening Laws of Mechanical Properties of Sandstone

2019-11-25  The mechanical properties of rocks are significantly affected by chemical corrosion. To explore the influence of chemical corrosion on the weakening laws of sandstone mechanical properties, the porosity and pore size distribution (PSD) of sandstone samples immersed in different chemical solutions was measured by the nuclear magnetic resonance (NMR) technique. The damage variable

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Characterisation of Sandstones: Mineralogy and Physical ...

2013-8-4  properties; a geological background may cause differences in colour, mineral composition, granulometric properties, pressure strength and / or weathering behaviour [2]. On the other hand, mineralogical properties of sandstones could predict their mechanical properties such as the uniaxial compressive strength. The inherent parameters of sandstones

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Mechanical Properties of Sandstone Cement-Stabilized

2019-8-22  Application of sandstone in cement-stabilized macadam (CSM) is an effective way to utilize sandstone. To determine the feasibility of using sandstone as a CSM aggregate, a series of experimental investigations, such as unconfined compressive strength (UCS) tests, Brazilian splitting tests and freeze-thaw cycle tests, were conducted on sandstone cement-stabilized macadam (SCSM).

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Mechanical Properties of Sandstone Under High Heat

2021-5-27  Measuring and Identifying the Changes in Mechanical Properties of Sandstone Induced by High Temperature. A paper published online in February 2021 sought to identify how heat affects the mechanical properties of different samples of sandstone from the Upper Silesian Coal Basin in Poland.

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Mechanical Properties of Sandstone under Loading and ...

The mechanical properties of rock mass under unloading conditions are essentially different from that under loading conditions. Triaxial compression tests and unloading confining pressure tests are conducted, and test results show that unloading failure is more brittle, and rock samples suffer more damage under unloading failure. The larger the initial confining pressure is, the easier of ...

Read More
Weakening Laws of Mechanical Properties of Sandstone

2019-11-25  The mechanical properties of rocks are significantly affected by chemical corrosion. To explore the influence of chemical corrosion on the weakening laws of sandstone mechanical properties, the porosity and pore size distribution (PSD) of sandstone samples immersed in different chemical solutions was measured by the nuclear magnetic resonance (NMR) technique. The damage variable

Read More
(PDF) Petrographic and Mechanical Properties of

Petrographic and Mechanical Properties of Sandstone from Murree Fo rmation, Jena Kor Area, Peshawar Basin 71 of time that determine whether or not a rock will be

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Study of the Mechanical Properties and Fracture Evolution ...

2021-7-26  The typical sandstone of the Shendong mining area, China, was considered as the research object in order to determine the mechanical properties and fracture evolution characteristics under true triaxial stress and different moisture contents by X-ray diffraction, true triaxial mechanical test, and CT scanning. The results show that the main mineral components of the sandstone are quartz ...

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Study on Mechanical Properties and Damage

2021-6-19  To analyze the effects of freeze-thaw cycles and confining pressure on the mechanical properties of red sandstone, through freeze-thaw cycles and triaxial compression tests, full stress-strain curves of different freeze-thaw cycles and different confining pressures were obtained. The degradation degree of red sandstone was quantitatively considered from different mechanical parameters of ...

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Characterisation of Sandstones: Mineralogy and Physical ...

2013-8-4  properties; a geological background may cause differences in colour, mineral composition, granulometric properties, pressure strength and / or weathering behaviour [2]. On the other hand, mineralogical properties of sandstones could predict their mechanical properties such as the uniaxial compressive strength. The inherent parameters of sandstones

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Characterization of Rock Mechanical Properties Using Lab ...

Rock mechanical properties, such as compressive strength, Young’s modulus, and Poisson’s ratio, play an important role in wellbore stability, fracture prediction, and other engineering techniques [3, 4]. Mechanical properties of rocks are usually measured using static and dynamic methods [1, 5].

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Identification of changes in mechanical properties of ...

2021-2-13  Material properties largely depend on their structure, and are strongly dependent on the scale of observation. Under the influence of various processes, the structure of a material can undergo evolution, which leads to major changes in the mechanical parameters and morphology of the medium. To understand the behaviour of a given material exposed to the influence of various factors, e.g ...

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Mechanical Properties of Sandstone Under High Heat

2021-5-27  Measuring and Identifying the Changes in Mechanical Properties of Sandstone Induced by High Temperature. A paper published online in February 2021 sought to identify how heat affects the mechanical properties of different samples of sandstone from the Upper Silesian Coal Basin in Poland.

Read More
Mechanical Properties of Sandstone Cement-Stabilized

2019-8-22  Application of sandstone in cement-stabilized macadam (CSM) is an effective way to utilize sandstone. To determine the feasibility of using sandstone as a CSM aggregate, a series of experimental investigations, such as unconfined compressive strength (UCS) tests, Brazilian splitting tests and freeze-thaw cycle tests, were conducted on sandstone cement-stabilized macadam (SCSM).

Read More
Experimental Study on the Mechanical Properties of ...

2021-3-1  ResearchArticle Experimental Study on the Mechanical Properties of Sandstone under the Action of Chemical Erosion and Freeze-Thaw Cycles Lizhuang Cui,1 Nan Qin ,1,2,3 ...

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(PDF) Mechanical Properties of Sandstone Cement

2019-8-22  sandstone has lower mechanical properties and higher water absorption and porosity levels than those. of limestone. Therefore, the frosting process (freeze

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Mechanical Properties of Sandstone under Loading and ...

The mechanical properties of rock mass under unloading conditions are essentially different from that under loading conditions. Triaxial compression tests and unloading confining pressure tests are conducted, and test results show that unloading failure is more brittle, and rock samples suffer more damage under unloading failure. The larger the initial confining pressure is, the easier of ...

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Uniaxial Mechanical Properties of Sandstone under Cyclic ...

Water is an important factor that influences the mechanical properties of rock. Uniaxial compressive experiments have been carried out on sandstone under different cyclic times of drying and wetting. The corresponding complete stress-strain curves are obtained, and characteristics of deformation and failure are analyzed. Test results show that when sandstone samples are submitted to cyclic of ...

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Sandstone Composition, Properties, Formation, Uses ...

Sandstone is a sedimentary rock and one of the most common types of sedimentary rock and is found in sedimentary basins throughout the world. It is composed of sand-size grains rock fragment, mineral and organic material. Sand-size particles range in size

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Static and dynamic mechanical properties and

2020-7-30  Wang et al. 19,20,21 studied the static mechanical properties, dynamic mechanical properties, failure modes, and energy dissipation of red sandstone under

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Mineralogical composition of sandstone Download Table

By taking into consideration of changes in physical properties, mechanical properties, and microscopic pore structure characteristics, the threshold temperature of tight sandstone is estimated in ...

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A log based analysis to estimate mechanical properties

2014-5-18  The Rock Mechanical Model (RMM) or Mechanical Earth Model (MEM) is a numerical representation of the state of stress and rock mechanical properties for a specific stratigraphic section in a field or basin [2]. Developed after the drilling operations, the MEM can be linked with Core data to provide localized

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