The SHPB test was carried out on the Granite under wetting-drying cycles in Ningshan,Shaanxi Prov-ince,China,to explore the effect of wetting-drying cycles on the dynamic characteristics of Granite.The experimen-tal results show that:(1)The dynamic uniaxial compressive strength,dynamic elastic modulus,and specific energy absorption(SEA)of granite are all related to the number of wetting-drying cycles and change exponentially.(2)During the wetting-drying cycles,the dynamic uniaxial compressive strength of granite decreases by 44％,the dy-namic elastic modulus decreases by 45％,and the specific absorbed energy decreases by 46％.(3)The stress growth rate of granite decreases with the increase of the number of wetting-drying cycles,and the stress growth rate of wetting-drying cycles decreases by 56％compared with the no wetting-drying cycles.(4)The energy consumption ratio decreased gradually with the increase of the number of wetting-drying cycles,and the wetting-drying cycles de-creased by 18.7％compared with the no wetting-drying cycles.(5)With the increase of the number of wetting-dr-ying cycles,the reflected energy remained basically unchanged.(6)The transmitted energy increases slowly with the increase of the number of wetting-drying cycles,and the transmitted energy in wetting-drying cycles increases by 70.1％compared with the no wetting-drying cycles.
关键词
干湿循环/SHPB试验/动态单轴抗压强度/动力弹性模量/比能量吸收值
Key words
Wetting-drying cycles/The SHPB test/Dynamic uniaxial compressive strength/Dynamic elastic modulus/Specific energy absorption value
维普
万方数据