Advertisement

Experimental study of mechanical properties of sandstone at high temperature

  • Rao Qiu-hua  (饶秋华)Email author
  • Wang Zhi  (王志)
  • Xie Hai-feng  (谢海峰)
  • Xie Qiang  (谢强)
Article

Abstract

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 results show that all of these values (σ t, σ c, E and K IC) are linearly increased with the increasing temperature below a certain temperature, 200 °C or 250 °C, and decreased above this temperature. The linear equations are σ t=0.010 9T+2.322, σ c = 0.181 9T+63.138, E=0.004 9T+10.498 and K IC =0.003 1T+0.60, respectively. Mineral compositions and microstructures of natural rock material have great influences on its mechanical properities at high temperature. Dominance of drying or microcracking would lead to the improvement or degradation of mechanical properities of rock.

Key words

tensile strength compressive strength elastic modulus Mode I fracture toughness high temperature sandstone 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    HEUZE F E. High-temperature mechanical, physical and thermal properties of granitic rocks—A review[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, 1983, 20(1): 3–10.CrossRefGoogle Scholar
  2. [2]
    ARAUJJO R G S, SOUSA J L A, BLOCH M. Experimental investigation on the influence of temperature on the mechanical properties of reservoir rocks[J]. International Journal of Rock Mechanics and Mining Sciences, 1997, 34(3): 459–466.CrossRefGoogle Scholar
  3. [3]
    MADLAND M V, KORSNES R I, RISNES R. Temperature effects in Brazilian, uniaxial and triaxial compressive tests with high porosity chalk[C]//Proceedings of SPE Annual Technical Conference and Exhibition. 2002: 3683–3693.Google Scholar
  4. [4]
    BALME M R, ROCCHI V, JONES C, et al. Fracture toughness measurements on igneous rocks using a high-pressure, high-temperature rock fracture mechanics cell[J]. Journal of Volcanology and Geothermal Research, 2004, 132(2/3): 159–172.CrossRefGoogle Scholar
  5. [5]
    DU Shou-ji, LIU Hua, ZHI Hong-tao, et a1. Testing study on mechanical properties of post-high-temperature granite[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(14):2359–2364. (in Chinese)Google Scholar
  6. [6]
    WANG Jing-tao, ZHAO Ai-guo, HUANG Ming-chang. The effect to rupture temper under high temperature of granite[J]. Chinese Journal of Geotechnical Engineering, 1989, 11(6): 113–118. (in Chinese)Google Scholar
  7. [7]
    XIA Xiao-he, WANG Ying-yi, HUANG Xing-chun, et a1. Experimental study on high temperature efects on the strength and deformation quality of marble[J]. Journal of Shanghai Jiaotong University, 2004, 38(6): 996–1002. (in Chinese)Google Scholar
  8. [8]
    de BRESSER J H P, URAI J L, OLGAARD D L. Effect of water on the strength and microstructure of Carrara marble axially compressed at high temperature[J]. Journal of Structural Geology, 2005, 27(2):265–281.CrossRefGoogle Scholar
  9. [9]
    DUCLOS R, PAQUET J. High-temperature behaviour of basalt—Role of temperature and strain rate on compressive strength and K IC toughness of partially glassy basalts at atmospheric pressure[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, 1991, 28(1): 71–76.CrossRefGoogle Scholar
  10. [10]
    ROCCHI V, SAMMONDS P R, KILBURN C R J. Flow and fracture maps for basaltic rock deformation at high temperatures[J]. Journal of Volcanology and Geothermal Research, 2003, 120(1/2): 25–42.CrossRefGoogle Scholar

Copyright information

© Central South University Press, Sole distributor outside Mainland China: Springer 2007

Authors and Affiliations

  • Rao Qiu-hua  (饶秋华)
    • 1
    Email author
  • Wang Zhi  (王志)
    • 1
  • Xie Hai-feng  (谢海峰)
    • 2
  • Xie Qiang  (谢强)
    • 1
  1. 1.School of Civil and Architecture EngineeringCentral South UniversityChangshaChina
  2. 2.School of Resources and Safety EngineeringCentral South UniversityChangshaChina

Personalised recommendations