Moscow, Moscow, Russian Federation
Moscow, Moscow, Russian Federation
Moscow, Moscow, Russian Federation
UDK 624.121.54 Сдвижение горных пород. Деформации. Реология
The two-stage study assesses the possibility of using LOGICBASE™ polymer (PVC) membranes in regions of increased seismic activity in the territory of the Russian Federation. The first stage considers the mechanism of polymer membranes operation in foundation structures under conditions of constant displacement and friction. The second stage of the research examines the round-shaped samples made of polymer membranes on a special multiaxial stretching unit according to GOST 33067-2014, Application DV. During the study, we fix the samples in the clamps of the test chamber and use a hydraulic pressure to stepwise them until they burst (simulation of work in deformation seams). According to the results of LOGICBASE™ V-SL polymer membranes for multiaxial stretching studies, the maximum tensile strength of the samples was 6948.22 kPa (~ 6.95 MPa). The stretching of the samples was 113.89%. Additionally, we constructed the graphs of the deformation (stretching) dependence of samples on the applied hydraulic pressure. Indeed, polymer membranes have a high isotropy of the material. It ensures their uniform operation on a tensile multiaxial load, and allows them to be used in the construction of unique and strategic facilities (tunnels, nuclear power plants, drinking water tanks, etc.). The study determined the coefficient of friction in the system "polymer (PVC) waterproofing material-concrete (reinforced concrete) structure" in conditions of increased seismic activity. Thus, in terms of the results of the study, PVC membranes for engineering waterproofing could be used in construction areas with seismicity up to 9 points (inclusive) on the MSK-64 scale.
concrete, reinforced concrete, foundations, seismic safety, waterproofing, polymer membranes, coefficient of friction
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