Experimental Research on the Tensile Strength of Saturated and Dry Rocks at Ultra-Low Temperatures

ZHANG Chao; YANG Fan; DUAN Pinjia; HAO Zhibin; LI Yang

doi:10.3724/j.gyjzG23061404

Volume 56 Issue 3

Mar. 2026

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2026 > 56(3): 244-252

ZHANG Chao, YANG Fan, DUAN Pinjia, HAO Zhibin, LI Yang. Experimental Research on the Tensile Strength of Saturated and Dry Rocks at Ultra-Low Temperatures[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(3): 244-252. doi: 10.3724/j.gyjzG23061404

Citation:

ZHANG Chao, YANG Fan, DUAN Pinjia, HAO Zhibin, LI Yang. Experimental Research on the Tensile Strength of Saturated and Dry Rocks at Ultra-Low Temperatures[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(3): 244-252. doi: 10.3724/j.gyjzG23061404

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Experimental Research on the Tensile Strength of Saturated and Dry Rocks at Ultra-Low Temperatures

doi: 10.3724/j.gyjzG23061404

1. CNOOC Gas & Power Group Ltd., Beijing 100028, China;
2. School of Civil Architecture and Environment, Hubei University of Technology, Wuhan 430068, China

Received Date: 2023-06-14
Available Online: 2026-04-11
Publish Date: 2026-03-20

Abstract

Abstract

To explore the tensile mechanical properties of saturated and dry granite and marble at ultra-low temperatures， this study employed a specifically designed mechanical loading apparatus in an ultra-low temperature environment. Brazilian split tests were conducted on granite and marble at temperatures of -90 ℃， -120 ℃， and -165 ℃. The results indicated that the tensile strength of coarse-grained granite continuously increased as the temperature decreased under ultra-low temperature conditions， albeit at a decelerating rate. Fine-grained granite exhibited a weakening trend at -165 ℃ but remained higher than at ambient temperature. Compared with ambient conditions， rock fractures in ultra-low temperature environments not only demonstrated through-going cracks but also featured persistent cracks. Moreover， water-saturated specimens exhibited triangular zone failure at the base. The peak energy dissipation rate during the process of rock tensile failure showed a similar trend to the peak strength， with a strong correlation between the two. This study aims to examine the tensile failure performance of rocks in ultra-low temperature environments and the changes in patterns of rock properties under the coupling of force and temperature， offering engineering insights for the design of cavern-type liquefied natural gas （LNG） storage tanks.
- ultra-low temperature,
- rock mechanics,
- cavern-type LNG storage tank,
- Brazilian split

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References(25)

References

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