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An Experimental Study on Fundamental Properties of a Sprayable Waterproofing Membrane
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  • Journal title : Tunnel and Underground Space
  • Volume 26, Issue 3,  2016, pp.220-234
  • Publisher : Korean Society for Rock Mechanics
  • DOI : 10.7474/TUS.2016.26.3.220
 Title & Authors
An Experimental Study on Fundamental Properties of a Sprayable Waterproofing Membrane
Chang, Soo-Ho; Kang, Tae-Ho; Choi, Soon-Wook; Lee, Chulho; Hwang, Gwi-Sung; Choi, Myung-Sik;
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Sprayable waterproofing membrane has been considered as a substitute for a sheet waterproofing membrane in a variety of underground excavation works. However, fundamental properties of sprayble waterproofing membrane have not been fully given yet. In this study, a new two-component sprayable waterproofing membrane prototype was developed. In addition, its physico-mechanical properties were measured and compared with those of two kinds of thin spray-on liners where constitutive materials and construction methods are very close to each other. From direct tensile tests, the sprayable waterproofing membrane with elongations at break between 250% and 300% showed much higher ductility than TSLs. However, the sprayable waterproofing membrane had a limitation as a support member since its bond strength and loading capacity was lower than those of TSLs. From three-dimensional X-ray CT images, the porosity of the sprayable waterproofing membrane was estimated to be 26.13%. However, most of pores which might have been generated during membrane curing were not observed to be interconnected but isolated.
Sprayable waterproofing membrane;Thin Spray-on Liner;Waterproofing;Support;Physico-mechanical properties;
 Cited by
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