Tests on Effects of Loading Rate on Modulus and Strength of Sandstone

Abstract:

For studying on the effects of loading rate on modulus and strength of sandstone, uniaxial compression experiment of the samples, from Balikun mine, was performed at different loading rates. The influence of loading rate on average modulus, uniaxial compressive strength and post-peak strength degradation angle was analyzed, and the results indicate that:: The average modulus of sandstone samples increases with loading rate increasing; the both almost obey linear relationship. The peak strength of sandstone grows with the increase of loading rate; there is an approximately exponential relationship between the two. With loading rate increasing, the post-peak strength degradation angle decreases; the relationship between the both is approximately exponential.

• Periodical: Advanced Materials Research (Volumes 1065-1069)
• Pages: 214-218
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1065-1069.214
• Online since: December 2014
• Authors: Chun Hui Zhang, Hong Liang Yue*, Lai Gui Wang
• Keywords: Degradation Angle, Loading Rate, Modulus, Uniaxial Compressive Strength

References

[1] Okubo S, Fukui K, Qi QX: Int. J. Coal Geol. Vol. 68 (2006), p.196.

[2] S.X. LIU, C.W. LIU, L. CAO: J. China Coal Society. Vol. 35 (2010), p. (1990).

[3] Chong KP, Borest AP: Int. J. Rock Mech. Min. Sci. Geomech. Abstr. Vol. 27(1990), p.199.

[4] Chong KP, Hoyt PM, Smith JW, Paulsen BY: Int. J. Rock Mech. Min. Sci. Geomech. Abstr. Vol. 17(1980), p.35.

[5] B.X. Huang, J.W. LIU: Int. J. Rock Mech. Min. Sci. Vol. 61(2013), p.23.

[6] M.Q. YOU: Chinese J. Rock Mech. and Eng. Vol. 22 (2003), p.53.

[7] Y.J. YU, C.H. ZHANG, L.G. WANG: J. China Coal Society. Vol. 37(2012), p.402.