The hydrostatic pressure resistance test for geosynthetic materials is a testing method used to evaluate the impermeability of materials such as geomembranes and composite geotextiles. 

This is done by gradually increasing the water pressure until the material ruptures, thereby determining its static water pressure resistance value. Testing PrincipleDuring the test, the sample is placed between two stainless steel plates, and the hydraulic system gradually increases the water pressure differential. 

When the flow rate sharply increases, it is considered that the sample has ruptured; the water pressure value at that moment is the static water pressure resistance value. This test can also simultaneously obtain parameters such as permeability coefficient, which is used to evaluate the impermeability reliability of the materials in engineering. 

Testing Steps

Sample Preparation: Cut samples to meet the standards and treat the edges to ensure sealing.Pressure Increase Observation: Gradually increase the water pressure differential until the sample ruptures, recording key parameters (such as flow rate and time).

Result Calculation: 

Calculate the permeability coefficient based on the formula to assess the impermeability performance of the material.

Beijing United Test Co.,Ltd. export@unitedtest.com offer the testing equipment of ASTM D5514 Large-Scale Hydrostatic Pressure Testing Machine of Geosynthetics. Contact us now : export@unitedtest.com, unitedtest@hotmail.com