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http://dx.doi.org/10.7474/TUS.2018.28.1.097

Evaluation of Mechanical Performance of a Segment Lining coated by a Sprayed Waterproofing Membrane by a Full-scale Loading Test  

Kang, Tae-Ho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Choi, Soon-Wook (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Lee, Chulho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Park, Byungkwan (Smart City&Construction Engineering, University of Science and Technology (UST))
Kim, Jintae (Taean Factory, Silkroad T&D Co., Ltd.)
Choi, Myung-Sik (Taean Factory, Silkroad T&D Co., Ltd.)
Chang, Soo-Ho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Tunnel and Underground Space / v.28, no.1, 2018 , pp. 97-110 More about this Journal
Abstract
The application of sprayed waterproofing membrane with high adhesion and ductility is considered to be promising as a measure for repair and reinforcement of a tunnel structure. Therefore, a powder-type and one-component membrane prototype with high tensile and bond strengths was made in this study. Then, its reinforcement effect on a shield segment was evaluated by carrying out a series of full-scale loading tests of segment specimens on which the membrane was sprayed. From the tests, it was confirmed that the initial cracking loads increased by approximately 34% due to cracking retardation by membrane coating. Even though the increase of failure loads were not so high as cracking loads, the strain-softening behaviors were observed from specimens coated by the membrane. Therefore, it is expected that the membrane coated on the inner surface of a lining might be effective in preventing its brittle failure.
Keywords
Spray-applied waterproofing membrane; Segment; Lining; Full-scale test; Tunnel; Reinforcement;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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