ASTM D3385-18 establishes a standard field method using a double-ring infiltrometer to determine the water infiltration rate of soils. It is designed for assessing water movement in unsaturated, fine-grained soils for environmental and engineering projects, excluding highly pervious, impervious, or frozen materials. The full technical specification is available through ASTM International or authorized distributors. The University of Utah
Concise takeaway
The test area must be cleared of debris, excessive vegetation, and loose topsoil. The surface should be as level as possible. Avoid disturbing the natural structure of the soil during preparation, as compaction will skew the results. 2. Driving the Rings Center the inner ring inside the outer ring.
The standard provides the field procedure for measuring the infiltration rate of soils using a double-ring infiltrometer . This method is primarily used for fine-grained soils to assess drainage for irrigation, waste disposal, or reservoir leakage. Core Test Principles astm d338518 pdf
Driving the rings can artificially compact fine-grained soils, leading to a lower measured infiltration rate than what naturally occurs.
Generally around 500 mm (20 inches) tall to allow for proper soil insertion and a sufficient water head. 2. Water Supply and Measurement Systems
The American Society for Testing and Materials (ASTM) is a globally recognized organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, and services. One such standard is ASTM D3385-18, which provides a framework for determining the permeability of porous concrete. In this article, we will explore the significance of ASTM D3385-18, its importance in the construction industry, and provide an in-depth analysis of the standard test method. ASTM D3385-18 establishes a standard field method using
The ASTM D3385-18 pdf standard does not cover all safety issues related to its use; it is the user’s responsibility to follow proper safety protocols. Where to Obtain the ASTM D3385-18 PDF
The document serves as a standardized guide for engineers, contractors, and scientists to ensure accuracy and consistency in measuring the rate at which liquids, typically water, infiltrate soil. This article explores the purpose, apparatus, procedure, and significance of this vital test method. 1. What is ASTM D3385-18?
Because water viscosity changes with temperature, ASTM D3385-18 recommends correcting the final steady-state infiltration rate to a standard temperature of 20°C (68°F) using viscosity correction factors provided within the official standard tables. Primary Applications of ASTM D3385-18 The University of Utah Concise takeaway The test
ASTM D3385-18 outlines the specific field procedure for measuring the flux of water into soil. The "18" in the designation indicates the standard was last updated or reapproved in 2018.
Water levels in both rings are kept at a fixed height. The volume of water required to maintain that specific height over set time intervals (e.g., every 5, 10, or 30 minutes) is recorded.