soil permeability
T.E.S.T.'s Permeability Room.
T.E.S.T. is a leading expert in performing flexible wall hydraulic conductivity (permeability) for various landfill projects. T.E.S.T.'s state of the art instrumentation (constant rate of flow, Method D of ASTM D 5084) mean that T.E.S.T.'s clients are able to receive results within 24 to 36 hours, even for clayey or soil/grout mixes with permeability range of 10E-08 to 10E-09 cm/s. T.E.S.T.'s goal is to produce extremely fast turn-around-time (TAT) in order to avoid construction delays on-site.
T.E.S.T. has sufficient instrumentation to support permeability testing up to 30 samples per day.
Flexible Wall Permeability (Constant Flow Method D per ASTM D 5084).
ASTM D 5084: Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter
These test methods cover laboratory measurement of the hydraulic conductivity (also referred to as coefficient of permeability) of water-saturated porous materials with a flexible wall permeameter at temperatures between about 15 and 30°C (59 and 86°F). Temperatures outside this range may be used; however, the user would have to determine the specific gravity of mercury and RT at those temperatures using data from Handbook of Chemistry and Physics. There are six alternate methods or hydraulic systems that may be used to measure the hydraulic conductivity.
Constant head permeability test for granular soils.
ASTM D 2434: Standard Test Method for Permeability of Granular Soils (Constant Head) (Historical Standard)
This test method covers the determination of the coefficient of permeability by a constant-head method for the laminar flow of water through granular soils. The procedure is to establish representative values of the coefficient of permeability of granular soils that may occur in natural deposits as placed in embankments, or when used as base courses under pavements. In order to limit consolidation influences during testing, this procedure is limited to disturbed granular soils containing not more than 10% soil passing the 75-μm (No. 200) sieve.
Particle Size and Texture Influence Permeability Results.