ASTM D2172/D2172M-24 PDF

Full title and description

ASTM D2172/D2172M-24 — Standard Test Methods for Quantitative Extraction of Asphalt Binder from Asphalt Mixtures. This standard specifies laboratory procedures for quantitatively determining the asphalt (bituminous) binder content of asphalt mixtures and pavement samples by solvent extraction and related sample handling; it also describes use of the extracted aggregate for subsequent sieve analysis and references methods for recovering binder for further testing.

Abstract

These test methods provide validated procedures for extracting and measuring asphalt binder content from asphalt mixtures and pavement samples. Multiple extraction procedures are described with specified solvents and reagents; extracted aggregate may be evaluated by sieve analysis and recovered binder can be processed for property testing using referenced recovery methods. The standard clarifies units (SI and inch-pound used independently), lists safety considerations, and notes that mixtures containing coal tar are not appropriate for these methods.

General information

• Status: Active
• Publication date: 01 May 2024
• Publisher: ASTM International
• ICS / categories: 91.100.50 (Binders, sealing materials); 93.080.20 (Road construction materials)
• Edition / version: D2172/D2172M-24
• Number of pages: 10

Scope

The standard covers quantitative determination of asphalt binder content in asphalt mixtures and pavement samples. It prescribes which solvents and reagents are acceptable for each procedure, gives requirements for sample preparation and handling, and indicates when extracted aggregate may be used for sieve analysis (Test Method D5444). It is explicit that the methods are not suitable for asphalt mixtures containing coal tar and that binder recovery for property testing should follow specified recovery practices.

Key topics and requirements

• Quantitative solvent extraction procedures for asphalt binder content (multiple procedures with specified solvents and reagents).
• Requirements for sample preparation, handling, and avoidance of contamination that could bias results.
• Specification that extracted aggregate may be used for sieve analysis (referencing Test Method D5444).
• Guidance for recovering extracted binder for property testing (referencing Test Method D1856, Practice D5404/D5404M, or Practice D7906).
• Units: SI and inch‑pound units are each accepted but must be used independently.
• Notes on accuracy/precision: results depend on operator competence, equipment calibration, and sample age; agencies meeting Specification D3666 recommended for reliable testing.
• Safety and environmental considerations for handling and disposal of extraction solvents and residues.

Typical use and users

This standard is used by transportation agencies, pavement materials laboratories, contractors, consultants, and research organizations for quality control, specification acceptance, mix design verification, service evaluation, and forensic or research testing of asphalt pavements. It is commonly implemented in municipal and state highway labs and commercial testing laboratories performing aggregate and binder analyses.

Related standards

Commonly referenced standards and practices include: ASTM D5444 (sieve analysis of extracted aggregate), ASTM D1856 (recovery of asphalt binder from solution), ASTM D5404/D5404M and ASTM D7906 (practices for binder recovery and handling), ASTM D3666 (guidance on laboratory competence), and AASHTO T 164 (related extraction procedures and solvent specifications). Users should consult these documents for companion procedures and downstream binder testing requirements.

Keywords

asphalt binder, solvent extraction, quantitative extraction, pavement sampling, aggregate recovery, sieve analysis, binder recovery, ASTM D2172, D2172M, mix design, pavement QA/QC, AASHTO T164

FAQ

Q: What is this standard?

A: ASTM D2172/D2172M-24 is a set of laboratory test methods for quantitatively extracting and measuring asphalt (bituminous) binder content from asphalt mixtures and pavement samples.

Q: What does it cover?

A: It covers solvent extraction procedures, sample preparation and handling, use of extracted aggregate for sieve analysis, and references procedures for recovering extracted binder for property testing. It also states units policy and safety considerations and excludes mixtures containing coal tar.

Q: Who typically uses it?

A: State and municipal highway agencies, materials testing laboratories, contractors, consulting engineers, and researchers involved in pavement design, construction quality control, and forensic pavement analysis.

Q: Is it current or superseded?

A: The D2172/D2172M-24 edition (published 01 May 2024) is the current active edition. Users should monitor committee notices for any ongoing revisions or work items that may update solvents or procedures.

Q: Is it part of a series?

A: Yes. D2172/D2172M is part of a family of pavement and binder test methods; it is routinely used together with ASTM D5444 (sieve analysis of extracted aggregate), D1856, D5404/D5404M, and D7906 (binder recovery and related practices), and is harmonized in practice with equivalent AASHTO methods (for example, AASHTO T 164).

Q: What are the key keywords?

A: Asphalt binder, solvent extraction, quantitative extraction, pavement sampling, aggregate recovery, sieve analysis, binder recovery, QA/QC.