Research on the Impact Resistance of Pre-laid Waterproofing Membrane
A steel bar impact resistance test is designed to simulate the actual construction situation of steel bar falling.The P-type pre-laid waterproofing membrane and self-adhesive waterproofing membrane are combined into two waterproofing layers through self-adhesive overlap.The puncture strength,impact resistance and steel bar impact resistance of one waterproofing layer(pre-laid waterproofing membrane)and two waterproofing layers(pre-laid waterproofing membrane+self-adhesive waterproofing membrane)are tested separately.The results indicate that a single pre-laid waterproofing membrane cannot pass the steel bar impact resistance test with a strength of 0.75 kg·m;the two waterproofing layers composed of P-type pre-laid waterproofing membrane and polyester reinforced self-adhesive waterproofing membrane can pass the steel bar impact resistance test with a strength of 4.5 kg·m;the two waterproofing layers composed of P-type pre-laid waterproofing membrane and polymer film based self-adhesive waterproofing membrane have unstable resistance to steel bar impact.
pre-laid waterproofing membranesteel bar impact resistanceself-adhesive waterproofing membranetwo waterproofing layers
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