Effects of Thermal Treatment on Tensile Strength of Laurentian Granite Using Brazilian Test

Yin, Tubing; Li, Xibing; Cao, Wenzhuo; Xia, Kaiwen

doi:10.1007/s00603-015-0712-3

Cited by 187 publications

(44 citation statements)

References 32 publications

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“…From the point of view of rock engineering, the effect of thermal treatment in rocks plays a crucial role in different fields of engineering applications such as rock drilling, ore crushing, deep petroleum boring, geothermal energy extraction, deep burial of spent nuclear fuel, and waste disposal (Balme et al, 2004;Homand-Etienne and Houpert, 1989;Kranz, 1983;Nasseri and Mohanty, 2008;Ozguven and Ozcelik, 2014;Yin et al, 2015Yin et al, , 2012. The safe and successful effectuation of modern geotechnical engineering projects such as nuclear waste disposal (Sundberg et al, 2009), underground coal gasification (Roddy and Younger, 2010), CO 2 sequestration (Rutqvist et al, 2002), geothermal heat energy (Zhao, 2000), construction in fire exposed rocks (Zhan and Cai, 2007), hydraulic fracturing for oil and natural gas recovery Papanastasiou, 1999;Whittaker et al, 1992) requires knowledge of the thermo-mechanical behaviour of rocks.…”

Section: Introductionmentioning

confidence: 99%

Influence of thermal treatment on mode I fracture toughness of certain Indian rocks

Mahanta

Singh

Ranjith

2016

Engineering Geology

192

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Section: Introductionmentioning

confidence: 99%

Influence of thermal treatment on mode I fracture toughness of certain Indian rocks

Mahanta

Singh

Ranjith

2016

Engineering Geology

192

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“…In general, the stress applied to the specimen is considered to be in equilibrium, in which the difference at two ends of the specimen is within 5% of its mean value . However, the stress concentration usually accelerates the failure near the loading end rather than the centre of the specimen at the high strain rate . Dai et al monitored the fracture process of the Brazilian disc specimens during dynamic split tension tests by the high‐speed camera.…”

Section: Discussionmentioning

confidence: 99%

“…67 However, the stress concentration usually accelerates the failure near the loading end rather than the centre of the specimen at the high strain rate. 40,45 Dai et al 68 monitored the fracture process of the Brazilian disc specimens during dynamic split tension tests by the highspeed camera. The experimental results showed that the specimen was first broken from the side of the incident bar specimen, then it was broken from the transmission bar specimen side, and finally the splitting failure of the specimen occurred.…”

Section: Discussionmentioning

confidence: 99%

Dynamic splitting tensile properties of concrete and cement mortar

Liu

Zhou

et al. 2019

Fatigue Fract Eng Mat Struct

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To investigate the dynamic tensile behaviours of concrete and cement mortar, a 50‐mm split Hopkinson pressure bar was applied on Brazilian disc specimens for dynamic tensile experiments, in which strain rate varied from 10−5 to 20 s−1. The high‐speed camera testing technique was used to capture the dynamic fractured process of the specimens at relative high strain rate. The experimental results revealed that the dynamic tensile strength of concrete specimens has a stronger strain rate effect than that of cement mortar specimens. Then three typical failure patterns of the specimens were confirmed in dynamic experiments. In addition, one‐parameter semi‐empirical relation between dynamic tensile strength and strain rate was established. Finally, the limitation of dynamic splitting experiments on Brazilian disc specimens was discussed in detail at high strain rate, in which the crack initiates from the contact point between the incident bar and specimens rather than the centre of the specimens.

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“…The comparison of the splitting strength of heat-treated Huashan granite with the granite rocks in other origins is shown in Fig. 13 [22,23]. Generally, the curves of splitting tensile strength and treatment temperature show similar trends, and three phases can be identified: (1) treatment temperature between 25-100°C, the splitting strength is volatile, which is significantly influenced by the impact velocity or (2) between 100°C to 500°C treatment temperatures, the strength curve basically levels off or gradually changes; and (3) at treatment temperature of 500°C or above, the splitting strength of granite decreases sharply.…”

Section: Characteristics Of Splitting Strengthmentioning

confidence: 99%

Effect of Heat Treatment on Dynamic Tensile Strength and Damage Behavior of Medium-Fine-Grained Huashan Granite

Wang

Shi

2017

Exp Tech

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In order to investigate the dynamic behavior of medium-fine-grained Huashan granite treated by different temperatures, the splitting tests on the granite specimens are carried out using an improved split Hopkinson pressure bar (SHPB). The dynamic force equilibrium condition in the specimen is basically satisfied. The results show that with increasing treatment temperature, the ultrasonic P-wave velocity decreases, while thermal damage accordingly increases. The damage evolution follows the logistic curve model. For a temperature at or below 500°C, all the specimens break diametrically into two halves at relatively low impact velocities. As the impact velocity rises, the triangular crushed zones are observed at the two loading ends of the specimen. When the temperature exceeds 500°C, the damage of the specimen becomes severe, and even completely pulverized under high impact velocity. There are good correlations between the splitting strength and the treatment temperature, the ultrasonic P-wave velocity as well as the thermal damage. In addition, the splitting strength is slightly abnormal at 100°C, namely the strength becomes lower than that at room temperature with increasing impact velocity. Overall, the decay of the splitting strength with thermal damage for the treatment temperatures over 100°C accords with the power function. Moreover, the splitting strength of specimen is sensitive to strain rate at high temperature, but the increasing rates are different under different ranges of temperature.

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Effects of Thermal Treatment on Tensile Strength of Laurentian Granite Using Brazilian Test

Cited by 187 publications

References 32 publications

Influence of thermal treatment on mode I fracture toughness of certain Indian rocks

Influence of thermal treatment on mode I fracture toughness of certain Indian rocks

Dynamic splitting tensile properties of concrete and cement mortar

Effect of Heat Treatment on Dynamic Tensile Strength and Damage Behavior of Medium-Fine-Grained Huashan Granite

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