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Field Test and Analysis of Effect of Antifreeze Thermal Insulating Layer in Tiziling Tunnel

CHEN Jian-xun~(1,2) (1.School of Civil Engineering & Architecture,Beijing Jiaotong University,Beijing 100044,China;2.Key Laboratory for Bridge and Tunnel Engineering of Shanxi Provice,Chang'an University,Xi'an 710064,China)  
Depending on the performance testing and evaluation conducted on a variety of antifreeze thermal insulating materials,hard urethane foam(field foam) is selected as antifreeze thermal insulating material to treat the frost damage in Tizilin Tunnels.After laying antifreeze thermal insulating layer,field tests for the tunnel temperature fields are carried out.The test results indicate that the effects of antifreeze thermal insulating layer are significant,and a reliable basis is supplied for the future use of the tunnel with antifreeze thermal insulating layer.
【Fund】: 河北省交通厅科研项目(Y-01212)
【CateGory Index】: U457.5
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