An Experimental Study on Fundamental Properties of a Sprayable Waterproofing Membrane

뿜칠 방수 멤브레인 시작품의 기초 물성평가

  • Received : 2016.06.17
  • Accepted : 2016.06.24
  • Published : 2016.06.30


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.


Grant : 지반함몰 발생 및 피해저감을 위한 지반 안정성 평가 및 굴착.보강 기술개발

Supported by : 국토교통과학기술진흥원


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