, this test becomes excessively time-consuming and prone to evaporation errors.
is the standard test method for measuring the infiltration rate of soils in the field using a double-ring infiltrometer. It is primarily used for fine-grained soils to determine how quickly water or other liquids penetrate the ground surface. Core Test Methodology
) for a given time interval is calculated using the formula: astm d338518 pdf
Place the outer ring down first, position the driving cap, and drive it vertically into the ground to a depth of approximately 150 mm (6 inches). Ensure the ring stays perfectly level. Next, center the inner ring inside the outer ring and drive it down to an identical depth. Step 3: Sealing and Pre-Wetting
Executing an ASTM D3385-18 compliant test requires standardized field equipment to ensure repeatability and data integrity. 1. The Rings Typically 300 mm (12 inches) in diameter. Outer Ring: Typically 600 mm (24 inches) in diameter. , this test becomes excessively time-consuming and prone
Assessing irrigation requirements and leaching efficiencies.
The test involves driving two concentric open cylinders into the ground and maintaining a constant liquid level in both. Inner Ring Core Test Methodology ) for a given time
For manually checking water levels or recording the exact volume of water being consumed over time. 5. Auxiliary Tools Hand augers (for soil investigation and setup) A stopwatch or timer
Precise chronometers for capturing time intervals. 5. Step-by-Step Testing Procedure
: This standard covers the determination of the pore size distribution of geotextiles, which can be used to evaluate their filtration and permeability characteristics.