---
code: "ASTM C702/C702M"
title: "Standard practice for reducing samples of aggregate to testing size"
institution: "ASTM"
category: "sample-preparation"
revision: "2024"
scope: "Describes practices for reducing field or laboratory samples of aggregate to a convenient size for testing, while limiting bias and loss of fines so that test portions remain representative of the bulk sample."
testMethod: "Covers mechanical splitter, quartering, and miniature stockpile procedures (and conditions under which each applies) so that reduced portions are suitable for subsequent physical and chemical aggregate tests."
specimenRequirements: "Initial sample mass and moisture condition shall meet the requirements of the sampling practice and the test methods to be run; reduction equipment and surfaces must be clean to avoid contamination between samples."
url: "https://vectorbtc.com.tr/resources/standards/astm-c702/"
---

ASTM C702/C702M is commonly referenced where laboratory jaw crushing, splitting, and sieving form part of the same aggregate or construction-materials sample-prep chain before standardized tests.