SIST EN 932-2:1999

Tests for general properties of aggregates - Part 2: Methods for reducing laboratory samples

This European Standard specifies methods for reducing laboratory samples of aggregates to test portions, a) when the test portion mass is: - specified by a lower limit on the mass, - specified by a tolerance around a target mass; - determined precisely by the requirements of a test method.

Prüfverfahren für allgemeine Eigenschaften von Gesteinskörnungen - Teil 2: Verfahren zum Einengen von Laboratoriumsproben

Diese Europäische Norm legt Verfahren zum Einengen von Laboratoriumsproben von Gesteinskörnungen zu Meßproben fest, wenn die Masse der Meßprobe - durch einen unteren Grenzwert festgelegt ist, - durch eine Grenzabweichung um einen Sollwert festgelegt ist, - durch die Erfordernisse des Prüfverfahrens genau festgelegt ist.

Essais pour déterminer les propriétés générales des granulats - Partie 2: Méthodes de réduction d'un échantillon de laboratoire

La présente norme européenne spécifie des méthodes de réduction d'échantillons de laboratoire de granulats en prises d'essai lorsque la masse de la prise d'essai est: spécifiée par la limite inférieure de la masse; - spécifiée par une tolérance autour d'une masse à atteindre; - déterminée précisément par les exigences de la méthode d'essai.

Preskusi splošnih lastnosti agregatov - 2. del: Metode zmanjševanja laboratorijskih vzorcev

General Information

• Status: Published
• Publication Date: 30-Sep-1999
• ICS: 91.100.15 - Mineral materials and products
• Technical Committee: AGR - Aggregates
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Oct-1999
• Due Date: 01-Oct-1999
• Completion Date: 01-Oct-1999
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Ref Project: EN 932-2:1999 - Tests for general properties of aggregates - Part 2: Methods for reducing laboratory samples

Relations

• Parent: SIST EN 932-1:1999 - Tests for general properties of aggregates - Part 1: Methods for sampling
• Effective Date: 22-Dec-2008

Overview

EN 932-2:1999 - issued by CEN - is a European standard that defines how to reduce laboratory samples of aggregates to representative test portions. The standard covers procedures to obtain the correct test portion mass when that mass is:

• specified by a lower limit,
• specified by a tolerance around a target mass, or
• determined exactly by the requirements of a particular test method.

This part of the EN 932 series supports consistent, repeatable sampling practice for mineral materials used in construction and laboratory testing.

Key Topics

• Scope and purpose: Clarifies when and why sample reduction is required before carrying out laboratory tests on aggregates.
• Test-portion mass criteria: Procedures are provided for situations where the required test portion is set as a minimum mass, defined within a tolerance band, or is precisely dictated by another test method.
• Representative reduction: Emphasis on producing a representative subsample from a larger laboratory sample to ensure accurate, reproducible analytical or physical test results.
• Quality and traceability: Guidance to support reliable quality control and conformity assessment by reducing sampling bias and variability.

(Note: EN 932-2:1999 specifies methods for reducing samples; consult the full standard document for step‑by‑step procedures and any referenced apparatus or technique details.)

Applications

EN 932-2:1999 is directly applicable to organizations and activities that require precise sample preparation of aggregates for testing:

• Materials testing laboratories performing aggregate characterization (particle size distribution, density, water absorption, etc.).
• Aggregate producers who must demonstrate product conformity and maintain consistent quality.
• Construction contractors and engineers who rely on validated laboratory results for material acceptance and mix design.
• Certification bodies and auditors assessing compliance with European aggregate and concrete standards.
• Research institutions studying aggregate properties where reproducible subsampling is essential.

Using EN 932-2 helps reduce variability in test results, supports standardized reporting, and improves confidence in decisions based on aggregate testing.

Related Standards

• EN 932 series (Tests for general properties of aggregates) - other parts address sampling, test methods, and property-specific procedures.
• ICS classification: 91.100.15 Mineral materials and products - places the standard within the mineral materials domain.

Keywords: EN 932-2:1999, aggregates, laboratory samples, sample reduction, test portion, CEN, aggregate testing, sample preparation, quality control.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-1999
Preskusi splošnih lastnosti agregatov - 2. del: Metode zmanjševanja
laboratorijskih vzorcev
Tests for general properties of aggregates - Part 2: Methods for reducing laboratory
samples
Prüfverfahren für allgemeine Eigenschaften von Gesteinskörnungen - Teil 2: Verfahren
zum Einengen von Laboratoriumsproben
Essais pour déterminer les propriétés générales des granulats - Partie 2: Méthodes de
réduction d'un échantillon de laboratoire
Ta slovenski standard je istoveten z: EN 932-2:1999
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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