Investigation of Granite Deformation Process under Axial …
Investigation of Granite Deformation Process under Axial Load Using LSTM-Based Architectures. Yalei Wang 1, Jinming Xu 1,2,*, Mostafa Asadizadeh 3, Chuanjiang Zhong 4, Xuejie Tao 1. 1 Department of Civil Engineering, Shanghai University, Shanghai, 200444, China 2 Institue for the Conservation of Cultural Heritage, Shanghai …
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Crack propagation process in double-flawed granite under …
The deformation of rock mass is not a simple material deformation but is composed of material deformation and structural deformation. ... Crack propagation process in double-flawed granite under ...
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Investigation of Granite Deformation Process under Axial …
Hutton, D.H.W. 1988: Granite emplacement mechanisms and tectonic controls: inferences from deformation studies - Mécanismes et tectogénèse de la mise en place du granite: déductions à partir des études de déformation Royal Society of Edinburgh ― Royal Society of London. Joint Meeting 1 (1987) 79(2-3): 245-255
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Experimental data of Beishan granite during cyclic loading …
It is of great significance to accurately characterize fluid migration within fractures under thermal-mechanical coupling condition for deep ground engineering, especially for the nuclear waste disposal engineering. Previous efforts characterizing hydraulic properties of fractures have focused on room temperature, and it is difficult to …
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Quantitative Evaluation of the Meso-thermal Cracking Law …
2.1 Basic Characteristics of Granite and Mechanical Properties of Diagenetic Minerals. As a typical crystalline rock, granite is characterized by low porosity, low …
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Process of magnetite fabric development during granite deformation
Request PDF | Process of magnetite fabric development during granite deformation | This study evaluates the fabric defined by magnetite grains in a syntectonically deformed granite and deciphers ...
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Understanding the Life Cycle of Granite Cutting & Processing
In conclusion, mastering the granite processing life cycle requires a blend of traditional craftsmanship and modern innovation. By understanding the intricacies of each phase and embracing sustainable practices, we can ensure the continued excellence of granite products for generations to come.----
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Study on Hot‐Compressive Deformation Behavior and …
Herein, to improve the microstructure homogeneity of 12Cr10Co3MoWVNbNB steel for turbine blades after forging, the hot deformation behavior and microstructure evolution of the steel are systematically investigated using a hot-compression experimental setup under the conditions of 950–1150 °C and strain rate of 0.001–10 s −1.A strain …
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Performance investigation of traditional diamond frame …
1. Introduction. Stone processing tools and equipment have gained much attention as natural stones extensively applied in the building and decoration industry [1].Stone fabricating machinery generally consists of diamond wire saw, circular saw and frame saw, and the cutting tools are mainly steel cables with diamond beads and …
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Evolution of thermal cracking, temperature distribution and deformation …
Thermal cracking, temperature and meso-deformation on the mineral grain size scale of Beishan granite were investigated during heating (160 °C ∼ 200 °C) and cooling process using online temperature, deformation …
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A true triaxial experiment investigation of the mechanical …
Understanding the mechanical and deformation failure behaviors of heated flawed granite under true triaxial stresses is of great significance for evaluating the wellbore stability in developing hot dry rock resources. ... the levels of cracking in flawed granite are revealed as the process zone nucleation and quasi-static growth, along with the ...
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Frictional Properties of Natural Granite Fault Gouge Under …
Given the local geology (Figure 1b), these seismogenic zone depths suggest that granite gouge, as seen in surface exposures of the principle slip zone (PSZ) of the ANHF, may play an important role in the seismogenic process. However, the mechanisms controlling the frictional behavior of the granitic PSZ gouge deformed at crustal depth …
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Nonlinear statistical damage constitutive model of granite
The mechanical behaviour and characteristics of rock under diverse external loads have always been a subject of interest to geotechnical engineers 1,2,3,4,5,6,7.The …
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Investigation of Granite Deformation Process under …
The deformation evolution of the rock specimen is a complex nonlinear dynamic process, in which the deformation conditions at one time may affect the stability conditions at the next time. Therefore, the LSTM-based architecture may be used to investigate the granite deformation process under axial load. In this study,
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Deformation and fracture behavior of granite by the short …
A dominant macro-fracture, linking up the tips of two notches, eventually forms. Meanwhile, a calculation method based on the energy conservation law for the …
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An improved strain-softening constitutive model of granite …
When the axial load (σ 1) reached 80% of its axial peak stress (σ p), the unloading and reloading process was carried out per 0.2–0.4 mm increments in lateral deformation. The unloading rate was remained at 1 kN/s, and the reloading process was controlled by the lateral deformation with a rate of 0.3 mm/min.
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Investigation of Granite Deformation Process under …
architecture may be used to investigate the granite deformation process under axial load. In this study, using the video image photographed during the laboratory compression test and cropping each ...
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Experimental study on deformation characteristics and pore
Introduction. Granite residual soil is formed by the weathering of carbonate granites under specific climatic and geological conditions. It is widely distributed in certain regions of China, such as Fujian, Guangdong, Yunnan, and Hunan provinces 1.In the process of soil weathering, the considerable amounts of leached unstable oxides and …
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Digital image correlation analysis of crack initiation and …
The deformation process of the specimen can be categorized into three distinct stages: the elastic stage, the plastic deformation stage (involving the formation and development of the fracture process zone (FPZ)), and the failure stage. ... The failure process of heat-treated granite typically involves three distinct. CRediT authorship ...
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Experimental investigation on the macro- and …
Based on trends in macroscopic deformation and AE characteristic parameters, the study reveals a critical transition at 400–500 °C for the macroscopic physical and mechanical properties of granite.
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The processing of granite: Step by step
Granite Processing: Sawing. Traditionally, granite blocks were cut by the machines to obtain slabs of the thickness, sizes and finishes required for their final use in the destination works. Now, however, thanks to new technologies, the blocks are cut into slabs by modern wire cutting machinery. These slabs can be cut into varying widths and ...
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Characteristic stress and strain precursor information for fine …
The unloading conditions will accelerate rock failure and cause more deformation of the fine-grained granite. (5) The point at which the derivative of the …
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Thermal-damage effects on fracturing evolution of granite …
During the deformation and fracturing process of loaded rock, the phenomenon of releasing strain energy in the form of elastic waves is known as acoustic emission (AE) [11], [12].The AE technology is a valuable tool for investigating rock failure mechanisms and predicting rock dynamical disasters [13], [14], [15], which has been a …
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Why granite is chosen to be the CMM component
Granite's advantages include little deformation, good stability, no rust, easy to make graphic processing, flatness, easy to achieve higher platform than cast iron and suitable for the production of high precision guide. So this material is applied to make workbench, bridge frame, the shaft guide rail and Z axis.
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Effect of Granite Residue Incorporation on the Behavior of …
The ornamental stone processing industry has a considerable environmental liability related to residue generation during the cutting stages of granite blocks. ... The results show that mortars with 40% granite residues presented greater plastic deformation, helping their applicability by also presenting improved technological properties in the ...
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Evaluation of Damage Stress Thresholds and Mechanical
2.1 Sample Preparation and Testing. Four coarse-grained granitic samples (S-1, S-2, S-3, and S-4) were prepared to be tested under uniaxial compressive …
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Experimental investigation of progressive cracking processes in granite
Granite cored from the same block of rock from a quarry in Zhangzhou City, south-eastern China was used for testing in this study. Laboratory tests showed that the unit weight, uniaxial compressive strength, tensile strength, and Young's modulus of the granite were 27.80 kN/m 3, 186 MPa, 11.68 MPa, and 28.66 GPa, respectively.Prismatic …
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Characteristic stress variation and microcrack evolution of granite …
The abovementioned studies indicate that grain size is a crucial factor influencing the mechanical behavior of granite. The failure of rock materials is a gradual process that involves microcrack closure, initiation, propagation, a decrease in cohesion between grains with the microcrack evolution, and ultimately the formation of …
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Deformation and failure characteristics of weathered granite …
The damage variable model is preliminarily developed. The deformation and damage of granite specimen are characterized with the experimental data. Main …
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Characteristic stress and strain precursor information for fine …
The unloading conditions will accelerate rock failure and cause more deformation of the fine-grained granite. (5) ... Defining stress thresholds of granite failure process based on acoustic emission activity parameters. Shock Vib., 2020 (2020), Article 8812066, 10.1155/2020/8812066.
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Investigation of Granite Deformation Process under Axial …
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Time-Dependent Deformation Behavior of Completely Weathered Granite
The wetting-induced deformation process presented significant time-dependent characteristics with stable creep. A new time-varying effect model was established based on the experimental results, which enabled an accurate simulation of the wetting deformation of the rock mass through a comparison with the experimental …
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Dynamic Mechanical Properties and Damage Evolution …
The deformation modulus of Beishan granite is in the range 120–180 GPa and has a mean value of 152.58 GPa; the discrete variation of the deformation modulus is still mainly related to factors such as specimen processing accuracy.
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Granite | Properties, Formation, Composition, Uses
The formation of granite is a complex process that requires specific geological conditions. Here are the key geological conditions necessary for granite formation: High temperatures: Granite forms from the melting of pre-existing rocks, which requires temperatures of at least 600 degrees Celsius. These high temperatures are …
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Analysis of Granite Deformation and Rupture Law and …
In actual underground rock engineering, to prevent the deformation and damage of the rock mass, rock bolt reinforcement technology is commonly employed to maintain the stability of the surrounding rock. Therefore, studying the anchoring and crack-stopping effect of rock bolts on fractured granite rock mass is essential. It can provide significant …
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Granite magma formation, transport and emplacement in …
The emplacement of granitic magma within the continental crust marks the final stage in the granite forming process. Emplacement is defined here as the switch from upward to horizontal flow, and ...
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