Information on the most widely used ASTM standards within the materials testing industry
ASTM D5514/D5514M Standard Test Methods for Large-Scale Hydrostatic Puncture Testing of Geosynthetics
ASTM D5514 test method evaluates the stress/time properties of geosynthetics by using hydrostatic pressure to compress the geosynthetic over synthetic or natural test bases consisting of manufactured test pyramids/cones, rocks, soil, or voids.
This test method allows the user to determine the relative failure mode or points of failure for geosynthetics, or both.

Three test procedures as below:
Procedure A—This procedure is an index-type test which can be used as a guide for acceptance of commercial shipments of geosynthetics. The standard cone and pyramid test fixtures can establish critical height (ch) consistency with similar material from previous lots or different suppliers, as well as testing from other laboratories. However, due to the time required to perform tests, it is generally not recommended for routine acceptance testing.
Procedures B and C—These procedures are performance tests intended as a design aid used to simulate the in-situ behavior of geosynthetics under hydrostatic compression. These test methods may assist a design engineer in comparing the ability of several candidate geosynthetic materials to conform to a site-specific subgrade under specified use and conditions.
In procedure B, the pressure is increased until a failure is observed.
In procedure C, a given set of conditions (pressure, temperature and test duration) are maintained constant and the performance of the system is observed at the end of the test.
Hydrostatic pressure resistance test for geosynthetic materials is a testing method used to evaluate the impermeability of materials such as geomembranes and composite geotextiles.
It 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.
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