International Scientific Journal


Experiments were conducted to study the mechanical characteristics of arkosic sandstones sampled from Pingyi, China. Rock samples were all thermally treated under the temperature ranging from room temperature to 800°C. Results show that as the treatment temperature rises, the arkosic mineral composition does not change obviously, but the mechanical behaviors change regularly. Variation trend changes dramatically at 200°C, 400°C, and 500°C. With thermal expan¬sion of mineral particles being the dominant factor, mechanical behaviors barely change below 200°C. When temperature ranges from 200-400°C, it has an important effect on the mechanical properties because of the thermal fracture. From 400-500°C, mechanical properties change dramatically as a result of the mutual influence of thermal fracture, fusion and re-crystallization, but the thermal fracture is the leading factor. Because of the fusion and re-crystallization, fractures are partly filled, which results in partial recovering of the mechanical strength. With the combined action of thermal fracture, fusion and re-crystallization after 600°C, mechanical performance of arkosic sandstones degrades rapidly. Generally, the porosity and peak strain of arkosic sandstones increase with the temperature rising. However, the peak stress, elastic modulus and deformation modulus decrease simultaneously. Influenced by mineral particles’ thermal expansion, thermal fracture, fusion, and re-crystallization and so on, the variation trend and amplitude are not the same at different temperature ranges, and the damage mechanism of sandstones also makes a difference.
PAPER REVISED: 2019-01-03
PAPER ACCEPTED: 2019-01-04
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THERMAL SCIENCE YEAR 2020, VOLUME 24, ISSUE Issue 5, PAGES [2991 - 3000]
  1. Zhang, Y., et al., An experimental investigation of transient heat transfer in surrounding rock mass of high geothermal roadway, Thermal Science, 20(2016), 6, pp. 2115-2124.
  2. Zhao, H. B., et al., Experimental Study on Effect of Temperature on Sandstone Damage (in Chinese), Chinese Journal of Rock Mechanics and Engineering, 28(2009), S1, pp. 2784-2788.
  3. Wu, G., et al., Mechanical Characteristics of Sandstone after High Temperatures (in Chinese), Chinese Journal of Rock Mechanics and Engineering, 26(2007), 10, pp. 2110-2116.
  4. Chen, L. J., et al., Study on Microstructure of Coal Roof Sandstone under High Temperature (in Chinese), Journal of China University of Mining & Technology, (2005), 4, pp. 443-446.
  5. Zhang, Y., et al., Experimental Study on Effect of Pore Pressure on Feldspar Fine Sandstone Permeability under Different Temperature (in Chinese), Chinese Journal of Rock Mechanics and Engineering, (2008), 1, pp. 54-58.
  6. Mccabe, S., et al., Exploitation of Inherited Weakness in Fire-damaged Building Sandstone: the ‘Fatiguing' of ‘Shocked' Stone, Engineering Geology, 115(2010), 3-4, pp. 217-225.
  7. Liu, S., et al., An Experimental Study on the Physico-mechanical Properties of Two Post-high-temperature Rocks, Engineering Geology, 185(2015), 4, pp. 63-70.
  8. Wu, G., et al., Laboratory Investigation of the Effects of Temperature on the Mechanical Properties of Sandstone, Geotechnical and Geological Engineering, 31(2013), 2, pp. 809-816.
  9. Zhang, L. Y., et al., Experimental Study on the Mechanical Properties of rocks at High Temperature, Science China Technological Sciences, 52(2009), 3, pp. 641-646.
  10. Tian, H., et al., Mechanical Properties of Sandstones Exposed to High Temperature, Rock Mechanics and Rock Engineering, 49(2016), 1, pp. 321-327.
  11. Dan, J., et al., Chapter 9: Predicting Reservoir System Quality and Performance, BEAUMONT E A, FOSTER N H. Exploring for Oil and Gas Traps, AAPG Treatise of Petroleum Geology, Handbook of Petroleum Geology. Tulsa: AAPG, 1999.
  12. Yu, Y., et al., Study of micro-pores development in lean coal with temperature, International Journal of Rock Mechanics & Mining Sciences, 51(2012), 4, pp. 91-96.
  13. Hassanzadegan, A., et al., The Effects of Temperature and Pressure on the Porosity Evolution of Flechtinger Sandstone, Rock Mechanics & Rock Engineering, 47(2014), 2, pp. 421-434.
  14. Bai, W., et al., Studies on the relationship between porosity permeability and structural characteristics in sandstones (in Chinese), Rock mechanics and engineering facing twenty-first Century: Proceedings of the Fourth Academic Conference of Chinese society of rock mechanics and Engineering, 1996.
  15. Liu, J. R., et al., Experimental study on relation between temperature and rocky permeability (in Chinese), Journal of China University of Petroleum: Edition of Natural Science, 25(2001), 4, pp. 51-53.
  16. Koncagül, E. C., et al., Predicting the unconfined compressive strength of the Breathitt shale using slake durability, Shore hardness and rock structural properties, International Journal of Rock Mechanics & Mining Sciences, 36(1999), 2, pp. 139-153.
  17. Ozguven, A., et al., Effects of high temperature on physico-mechanical properties of Turkish natural building stones, Engineering Geology, (2014), 183, pp. 127-136
  18. Ju, Y., et al., Topological representation of the porous structure and its evolution of reservoir sandstone under excavation-induced loads, Thermal Science, 21(2017), suppl. 1, pp: 285-292.
  19. Wan, Z. J., et al., Research status quo and prospection of mechanical characteristics of rock under high temperature and high pressure, Procedia Earth & Planetary Science, 1(2009), 1, pp. 565-570.
  20. Zuo, J. P., et al., Experimental research on thermal cracking of sandstone under different temperature (in Chinese) , Chinese Journal of Geophysics, (2007), 4, pp. 1150-1155.
  21. He, G. L., et al., Experimental study on ultrasonic properties of sandstone before and after high temperature (in Chinese), Rock and Soil Mechanics, 28(2007) , 4, pp. 779-784.
  22. He, J., et al., Experimental study on physico-mechanical and acoustic properties of coal serial sandstone under high temperature and unidirectional restriction (in Chinese), Journal of China Coal Society, 36(2011) , S2, pp. 231-236.
  23. Yang, L. N., et al., Mechanical Properties of sandstone after high temperature (in Chinese), China Earthquake Engineering Journal, 38(2016), 2, pp. 299-302.

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