ASTM D2041/D2041M-19 PDF

Full title and description

Standard Test Method for Theoretical Maximum Specific Gravity and Density of Bituminous Paving (Asphalt) Mixtures — describes procedures to determine the theoretical maximum specific gravity (Gmm) and density of uncompacted bituminous paving mixtures used for mix design and quality control.

Abstract

This test method provides a procedure, apparatus requirements, and calculation steps for measuring the theoretical maximum specific gravity and density of asphalt/bituminous paving mixtures at 25 °C (77 °F). Results are used to calculate air voids, percent compaction, and other mix design and acceptance metrics.

General information

• Status: Current / Active (approved revision 2019).
• Publication date: June 1, 2019 (designation D2041/D2041M‑19).
• Publisher: ASTM International.
• ICS / categories: 91.100.50 (Binders, sealing materials), 93.080.20 (Road construction materials).
• Edition / version: D2041/D2041M‑19.
• Number of pages: 4 (current edition document length).

Scope

This standard covers the determination of the theoretical maximum specific gravity and density of uncompacted bituminous paving mixtures at 25 °C (77 °F). It states unit conventions for SI and inch‑pound use, identifies required apparatus and measurements, and notes that explanatory notes are not mandatory requirements. The method does not replace safety, health, or environmental practices required by the user.

Key topics and requirements

• Definition and determination of theoretical maximum specific gravity (Gmm) for asphalt mixtures.
• Use of vacuum pycnometer or appropriate apparatus to obtain uncompacted mixture volume and mass.
• Temperature control and testing at 25 °C (77 °F) and use of SI or inch‑pound units (treated separately).
• Procedures for sample preparation, de‑airing, mass and volume measurements, and required calculations.
• Reporting of results needed for mix design (Gmm, theoretical maximum density) and subsequent air‑void calculations.
• Referenced ASTM practices and apparatus specifications relevant to implementation and laboratory quality control.

Typical use and users

Used by highway agencies, pavement design laboratories, materials testing labs, contractors, and researchers for asphalt mix design, production quality control, acceptance testing, and to calculate percent compaction and air voids in paved mixtures.

Related standards

The test references and is used alongside other ASTM standards and practices for asphalt and road materials (examples include Terminology standards, sampling practices, equipment guides and laboratory quality practices such as D8, D979/D979M, D3666, D4753 and related practices called out in the standard).

Keywords

theoretical maximum specific gravity; Gmm; density; asphalt mixture; bituminous paving mixtures; vacuum pycnometer; de‑airing; 25 °C; mix design; air voids; percent compaction.

FAQ

Q: What is this standard?

A: ASTM D2041/D2041M‑19 is the ASTM test method that defines how to measure the theoretical maximum specific gravity and density of uncompacted bituminous (asphalt) paving mixtures for mix design and QC purposes.

Q: What does it cover?

A: It covers required apparatus, sample preparation, measurement steps, temperature requirements (25 °C / 77 °F), calculation procedures for Gmm and theoretical maximum density, and unit conventions for SI and inch‑pound systems.

Q: Who typically uses it?

A: State and local transportation agencies (DOTs), independent materials testing labs, contractors, mix designers, and researchers in pavement engineering.

Q: Is it current or superseded?

A: The current approved revision is D2041/D2041M‑19, approved June 1, 2019 (the active edition at the time of publication). Users should verify whether a newer revision has been released since that date before relying on it for compliance.

Q: Is it part of a series?

A: It is part of ASTM Committee D04's suite of standards for road and paving materials and is commonly used together with other D04 test methods and practices for asphalt sampling, extraction, and density determinations.

Q: What are the key keywords?

A: Key keywords include theoretical maximum specific gravity, Gmm, asphalt mixture density, vacuum pycnometer, air voids, mix design, and compaction.