Study on Splitting Tensile Strength of Shotcret Layer of High Temperature Tunnel

Abstract:

The high-temperature tunnel at Buren mouth - kongur Hydropower in West Kunlun Mountains of Xinjiang, China exist significant temperature differences phenomenon, which affects the stability of the shotcrete layer in tunnel. Combining with on-site engineering practice, the insulation heating device is designed. The laboratory splitting tensile strength test is carried out on polyester concrete, polypropylene concrete, polyacrylonitrile concrete and ordinary concrete with thermal heating device at 25°C-90°C. The splitting tensile strength changes of concretes affected by temperature difference are analyzed. The results supply a directly guidance to the design of the concrete sprayed layer structure of high-temperature tunnel.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 1169-1173
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.1169
• Online since: November 2012
• Authors: Yan Zhang, Ning Li, Hao Bo Zhang
• Keywords: High Temperature Tunnel, Shotcrete Layer, Splitting Tensile Strength Test, Temperature Difference

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