Abstract

Hong Kong-Zhuhai-Macao Bridge, the main structure is immersed tube tunnel bridge, its design life of 120 years, to find a suitable detection method is essential to assess the durability of the tunnel to ensure quality. TORRENT detection method and concrete testing radar combining such a large cross-section of the tunnel concrete structures nondestructive testing, test results show that the combination of these two methods on its own merits, the principle can efficiently detect large section structure permeability. NDT permeability through the tunnel to achieve effective assessment of the quality of concrete.

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