ASTM D75/D75M-19 PDF

Full title and description

ASTM D75/D75M-19 — Standard Practice for Sampling Aggregates. This practice provides procedures and guidance for obtaining representative samples of coarse and fine aggregates from sources such as flowing streams (bins or belt discharge), conveyor belts, stockpiles, transportation units, and roadway, for purposes including preliminary investigation, production control, site control, and acceptance/rejection testing.

Abstract

This standard sets out recommended practices for collecting representative samples of aggregates used in construction and concrete production. It describes sampling locations and methods, recommended sample sizes and reduction techniques (in conjunction with related sample-reduction standards), and notes on units of measurement (SI and inch‑pound are each treated as separately valid). The practice emphasizes the importance of trained personnel and appropriate equipment to ensure sample quality.

General information

• Status: Active (2019 edition).
• Publication date: November 1, 2019 (designated D75/D75M-19).
• Publisher: ASTM International.
• ICS / categories: 91.100.30 — Concrete and concrete products.
• Edition / version: D75 / D75M — 2019 revision (D75/D75M-19).
• Number of pages: 7 pages.

Scope

This practice covers sampling of coarse and fine aggregates for: (1) preliminary investigation of potential sources of supply, (2) control of the product at the source of supply, (3) control of operations at the site of use, and (4) acceptance or rejection of materials. It clarifies that SI and inch‑pound units are each independently valid and notes that the reliability of results depends on trained personnel and properly maintained equipment.

Key topics and requirements

• Sampling locations and methods: flowing streams (bins or belt discharge), conveyor belts, stockpiles, trucks/rail cars, and roadway sampling procedures.
• Purpose-driven sampling plans: different approaches for preliminary investigation, plant control, site control, and acceptance testing.
• Sample size and handling: guidance on number and size of increments, combining increments into composite samples, and preservation of representativeness (references to sample reduction practices).
• Split/reduction recommendations: directs users to established reduction practices (e.g., ASTM C702/AASHTO R76) when reducing samples to testing size.
• Units and conformity: both SI and U.S. customary (inch‑pound) units are specified separately; do not mix unit systems when applying requirements.
• Competence and quality: notes that results depend on competent personnel, equipment calibration, and appropriate testing agency procedures.
• Safety and environmental note: the standard does not address all safety concerns — users must establish appropriate safety/health practices.

Typical use and users

This practice is used by aggregate producers, materials laboratories, contractors, transportation departments, consulting engineers, and quality-control/quality-assurance personnel involved in concrete and pavement materials testing. It is applied during source evaluation, production control at quarries and plants, site control for construction projects, and acceptance testing for purchase or specification compliance.

Related standards

ASTM D75 is commonly used alongside other aggregate and sample-handling standards, for example: ASTM C136 (sieve analysis), ASTM C117 (material finer than 75 µm by washing), ASTM C702/AASHTO R76 (reducing samples of aggregate to testing size), and Practice D3665 (sampling of bituminous materials and aggregates where applicable). Practice E105 is referenced for planning tests and acceptance schemes. Users typically consult these and other ASTM/AASHTO test methods when implementing a complete aggregate testing program.

Keywords

Aggregates, sampling, coarse aggregate, fine aggregate, sample reduction, stockpile sampling, conveyor sampling, acceptance testing, QA/QC, ASTM D75/D75M-19.

FAQ

Q: What is this standard?

A: ASTM D75/D75M-19 is a standard practice that describes how to obtain representative samples of coarse and fine aggregates for investigation, production control, site control, and acceptance testing.

Q: What does it cover?

A: It covers sampling locations and methods (streams, conveyors, stockpiles, transport units, roadway), composite sampling, sample sizes, handling and reduction guidance (in conjunction with sample‑reduction practices), and notes on units and personnel competence.

Q: Who typically uses it?

A: Aggregate producers, construction contractors, testing laboratories, state DOT material engineers, consulting engineers, and QA/QC staff responsible for materials acceptance and control.

Q: Is it current or superseded?

A: The version designated D75/D75M-19 was published on November 1, 2019; sources list this as the active 2019 edition. Users should check ASTM International for any amendments or later revisions beyond 2019.

Q: Is it part of a series?

A: D75 is part of the family of ASTM standards addressing aggregates and aggregate testing and is commonly referenced with test methods and practices such as C136, C117, C702, D3665, and related AASHTO procedures.

Q: What are the key keywords?

A: Aggregates, sampling, sample reduction, stockpile, conveyor, QA/QC, acceptance testing, coarse aggregate, fine aggregate.