Establishes procedures for obtaining representative samples of aggregates from stockpiles, bins, conveyors, and transportation units so that laboratory subsamples reflect the delivered or stored material.
ASTM D75/D75M
Revision: 2019
Sample preparation
Standard practice for sampling aggregates
Establishes procedures for obtaining representative samples of aggregates from stockpiles, bins, conveyors, and transportation units so that laboratory subsamples reflect the delivered or stored material.
Test method
Defines equipment, increment spacing, and minimum masses for field samples as functions of nominal maximum aggregate size; addresses flowing and non-flowing streams and layered stockpiles.
Specimen requirements
Sample containers shall prevent moisture loss or contamination where required; identification and chain of custody shall accompany samples from field to laboratory reduction steps.
Compatible equipment
ASTM D75/D75M sits upstream of laboratory reduction (including crushing and splitting) in many aggregate QC programmes and is often cited together with ASTM C702/C702M.