DURABILITY QUALITY CONTROL FOR IMMERGED TUBE CONCRETE THROUGH AIR PERMEABILITY AND ELECTRICAL RESISTANCE MEASUREMENT
This paper reports the in-situ non-destructive tests through air permeability and electrical resistance measurements on the prefabricated segments of immerged tube tunnel for the Hong Kong-Zhuhai-Macau sea link project.The paper reviews first the theory basis for the devices of air permeability (Torrent Method) and electrical resistance (Wenner Method), discussing influential factors on these measurements.The obtained data of air permeability kT and electrical resistivity ρ are analysed for their statistical parameters and the influence of the main factors.The kT values show the tube segments have low permeability with low variability for 56d measurements but the values are not strongly influenced by temperature or water content.The ρ values are stable and correlated strongly with age of testing.The kT and ρ values are inversely correlated, but in a qualitative way.Then, a tentative double parameter criterion is proposed using the kT-ρ couples and their statistical parameters to evaluate the durability quality of in-situ structural concrete.
HZM project Immersed Tube Tunnel Permeability Resistivity
Pianpian Wang Guihong Dong Kefei Li Roberto Torrent
Civil Engineering Department, Tsinghua University, Beijing 100084, China CCCC 4th Harbor Research Institute, Guanzhou 510230, Guang Dong Province, China Quali-TI-Mat Ltd., Via Mercole 2, CH-6877 Coldrerio, Switzerland
国际会议
The 3rd International Conference on Service Life Design for Infrastructure(2014第三届基础设施服役寿命设计国际会议)
珠海
英文
367-374
2014-10-15（万方平台首次上网日期，不代表论文的发表时间）