ASTM D5084-24 PDF

Full title and description

Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter — ASTM D5084-24. This standard specifies laboratory procedures, apparatus requirements, and alternate test methods for measuring the hydraulic conductivity (coefficient of permeability) of water‑saturated porous materials (soils and similar porous media) using a flexible‑wall permeameter.

Abstract

ASTM D5084-24 provides six alternate hydraulic systems/methods (constant head; falling head with constant or rising tailwater; constant rate of flow; and two constant‑volume mercury methods) and detailed procedures to obtain laboratory measurements of one‑dimensional, laminar flow hydraulic conductivity on saturated specimens. The standard assumes Darcy flow, prescribes specimen preparation and confining stress control, and includes guidance on applicable conductivity ranges, temperature control, equilibrium criteria, and hazards.

General information

• Status: Active standard.
• Publication date: 15 June 2024 (designation D5084-24; last updated record shows activity into 2024).
• Publisher: ASTM International.
• ICS / categories: 91.100.50 (Binders. Sealing materials) — classified under geotechnical / permeability testing categories.
• Edition / version: ASTM D5084‑24 (2024 revision).
• Number of pages: 24 pages.

Scope

These test methods cover laboratory measurement of hydraulic conductivity of water‑saturated porous materials using a flexible‑wall permeameter at typical laboratory temperatures (about 15 to 30 °C). Six alternate procedures (Methods A–F) are provided to suit different conductivity ranges and experimental constraints. The standard applies to intact, reconstituted, remolded or compacted specimens within the specified conductivity limits and assumes Darcy flow; it also provides guidance on limits where other test methods (for example D2434) may be more appropriate.

Key topics and requirements

• Apparatus: flexible‑wall permeameter and associated confining/mercury systems, tubing and measurement devices.
• Six alternate methods: Method A — Constant Head; Method B — Falling Head (constant tailwater); Method C — Falling Head (rising tailwater); Method D — Constant Rate of Flow; Method E — Constant Volume–Constant Head (mercury); Method F — Constant Volume–Falling Head (mercury).
• Specimen types: intact, reconstituted, remolded, compacted specimens; control of effective stress and void ratio emphasized.
• Applicable conductivity ranges: generally for saturated materials with hydraulic conductivity less than ~1×10⁻⁶ m/s (with guidance for lower and somewhat higher ranges and when alternative methods are required).
• Temperature and fluid: tests use water as the permeant liquid (typical lab temperature 15–30 °C); procedures for mercury constant‑volume methods are provided where appropriate.
• Data, equilibrium and reporting: equilibrium criteria, significance digits and rounding per Practice D6026, and considerations for test duration depending on method and specimen conductivity.
• Safety and hazards: section covering hazards (e.g., mercury use), and requirement for users to establish appropriate safety and environmental practices.

Typical use and users

Used by geotechnical laboratories, environmental testing facilities, research institutions, consultants and regulatory bodies to determine permeability/hydraulic conductivity of soils and engineered barrier materials for design, quality control, contaminant transport assessment and barrier verification. Typical users include geotechnical engineers, hydrogeologists, laboratory technicians and researchers performing permeability characterization for foundations, liners, containment systems and groundwater flow studies.

Related standards

Commonly referenced complementary or alternative standards include ASTM D2434 (permeability tests for higher conductivities), Practice D3740 (evaluation of testing agencies), Practice/Guide D6026 (significant digits and rounding guidance), and other soil test methods used for specimen preparation and index properties. Users should consult those documents when selecting methods or interpreting results.

Keywords

hydraulic conductivity, coefficient of permeability, flexible wall permeameter, constant head, falling head, constant rate of flow, constant volume, mercury method, saturated porous materials, geotechnical testing, permeability, liner, barrier testing.

FAQ

Q: What is this standard?

A: ASTM D5084-24 is a laboratory test standard that specifies methods to measure the hydraulic conductivity of water‑saturated porous materials using a flexible‑wall permeameter.

Q: What does it cover?

A: It covers apparatus requirements, specimen preparation, six alternative test methods (Methods A–F), temperature and fluid considerations, equilibrium and reporting criteria, applicable conductivity ranges, and safety/hazard notes (including mercury methods).

Q: Who typically uses it?

A: Geotechnical and environmental testing labs, consulting engineers, researchers and regulatory laboratories that perform permeability testing on soils, liners and other compacted or intact specimens.

Q: Is it current or superseded?

A: The designation D5084-24 is the current active revision as of 2024 (publication date June 15, 2024 — designation D5084‑24). Users should confirm they are using the latest revision from ASTM before purchase or citation.

Q: Is it part of a series?

A: It is part of ASTM's geotechnical/hydraulic testing suite of standards (book of standards volume covering permeability and related soil test methods) and is commonly used alongside related ASTM test methods and practices (for example D2434, D3740, D6026).

Q: What are the key keywords?

A: Hydraulic conductivity, permeameter, coefficient of permeability, constant head, falling head, constant volume, mercury method, saturated soil, permeability testing.