SIST EN 12697-2:2025

Bituminous mixtures - Test methods - Part 2: Determination of particle size distribution

This document specifies a procedure for the determination of the particle size distribution of the aggregates of bituminous mixtures by sieving. The test is applicable to aggregates recovered after binder extraction in accordance with EN 12697-1 or EN 12697-39.
NOTE   Fibres, solid (non-soluble during extraction) additives and (some) binder modifiers influence the test result.

Asphalt - Prüfverfahren - Teil 2: Korngrößenverteilung

Dieses Dokument legt ein Verfahren für die Bestimmung der Korngrößenverteilung der Gesteinskörnungen in Asphalt mittels Siebanalyse fest. Die Prüfung ist für Gesteinskörnungen, die nach Extraktion des Bindemittels nach EN 12697 1 oder EN 12697 39 rückgewonnen wurden, anwendbar.
ANMERKUNG   Fasern, feste Zusatzstoffe (die bei der Extraktion nicht in Lösung gehen) und (einige) Modifizierungs-mittel für Bindemittel beeinflussen das Prüfergebnis.

Mélanges bitumineux - Méthodes d'essai - Partie 2 : Granulométrie

Ce document spécifie une procédure pour la détermination de la distribution granulométrique des granulats des mélanges bitumineux par tamisage. L’essai est applicable aux granulats récupérés après extraction du liant conformément à la norme EN 12697  1 ou EN 12697  39.
NOTE   Les fibres, les additifs solides (non solubles lors de l'extraction) et (certains) modificateurs de liant influencent le résultat de l’essai.

Bitumenske zmesi - Preskusne metode - 2. del: Ugotavljanje zrnavosti

Ta dokument določa postopek za ugotavljanje zrnavosti agregatov bitumenskih zmesi s sejanjem. Preskus se uporablja za agregate, ponovno pridobljene po ekstrakciji veziva skladu s standardom EN 12697-1 ali EN 12697-39. OPOMBA: Na rezultat preskusa vplivajo vlakna, trdni (med ekstrakcijo netopni) dodatki in (nekateri) modifikatorji veziv.

General Information

• Status: Published
• Public Enquiry End Date: 19-Dec-2023
• Publication Date: 03-Apr-2025
• ICS: 93.080.20 - Road construction materials
• Technical Committee: CES - Roads
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 13-Mar-2025
• Due Date: 18-May-2025
• Completion Date: 04-Apr-2025
• Ref Project: EN 12697-2:2024 - Bituminous mixtures - Test methods - Part 2: Determination of particle size distribution

Relations

• Replaces: SIST EN 12697-2:2015+A1:2019 - Bituminous mixtures - Test methods - Part 2: Determination of particle size distribution
• Effective Date: 01-Mar-2025
• Refers: SIST EN 933-1:2012 - Tests for geometrical properties of aggregates - Part 1: Determination of particle size distribution - Sieving method
• Effective Date: 28-Jan-2026
• Refers: SIST-TP CEN ISO/TR 18486:2017 - Plastics - Parameters comparing the spectral irradiance of a laboratory light source for weathering applications to a reference solar spectral irradiance (ISO/TR 18486:2016)
• Effective Date: 28-Jan-2026
• Refers: SIST EN 12697-1:2020 - Bituminous mixtures - Test methods - Part 1: Soluble binder content
• Effective Date: 28-Jan-2026
• Refers: SIST EN 12697-39:2020 - Bituminous mixtures - Test methods - Part 39: Binder content by ignition
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 13108-8:2016 - Bituminous mixtures - Material specifications - Part 8: Reclaimed asphalt
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 12594:2007 - Bitumen and bituminous binders - Preparation of test samples
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 12697-11:2012 - Bituminous mixtures - Test methods for hot mix asphalt - Part 11: Determination of the affinity between aggregate and bitumen
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 13108-20:2006 - Bituminous mixtures - Material specifications - Part 20: Type Testing
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 12697-15:2022 - Bituminous mixtures - Test methods - Part 15: Determination of the segregation sensitivity
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 13108-20:2016 - Bituminous mixtures - Material specifications - Part 20: Type Testing
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 12697-11:2020 - Bituminous mixtures - Test methods - Part 11: Determination of the affinity between aggregate and bitumen
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 13108-31:2019 - Bituminous mixtures - Material specifications - Part 31: Asphalt Concrete with Bituminous Emulsion
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 12697-15:2004 - Bituminous mixtures - Test methods for hot mix asphalt - Part 15: Determination of the segregation sensitivity
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 12594:2014 - Bitumen and bituminous binders - Preparation of test samples
• Effective Date: 28-Jan-2026

Overview

SIST EN 12697-2:2025 specifies a standardized test method for determining the particle size distribution of aggregates in bituminous mixtures, commonly used in road construction. This European standard provides a procedure based on sieving, ensuring the accurate assessment of aggregate grading after binder extraction, in accordance with EN 12697-1 or EN 12697-39. Aggregate grading is a critical quality parameter for asphalt and bituminous mixtures, directly influencing durability, compaction, workability, and pavement performance.

This standard supersedes the previous edition (SIST EN 12697-2:2015+A1:2019), reflecting the latest technical requirements and aligning procedures with current best practices.

Key Topics

• Purpose and Scope

  • Defines a laboratory test for measuring the particle size distribution (granulometry) of aggregates extracted from bituminous mixtures.
  • Applicable after binder extraction using EN 12697-1 (solvent extraction) or EN 12697-39 (ignition method).

• Test Methodology

  • Sieving of dry, separated aggregate samples using standardized test sieves according to EN 933-1, ISO 3310-1, and ISO 3310-2.
  • Ensures thorough drying and separation of particles for accurate results.
  • Calculation of cumulative percentages by mass passing each sieve.

• Influence of Additives

  • Test results may be affected by fibres, solid additives, and certain binder modifiers present in the mixture.

• Reporting and Precision

  • Requires inclusion of specimen identification, full grading curve, test deviations, and test date in the report.
  • Outlines repeatability and reproducibility recommendations, referencing EN 932-6 for statistical evaluation.

Applications

• Quality Control in Asphalt Production

  • Routine use in asphalt plants and road material laboratories to verify aggregate grading consistency, ensuring compliance with project specifications and regulatory requirements.

• Pavement Design and Material Approval

  • Supports the approval process for new asphalt mixtures by validating that aggregate gradation meets targeted performance criteria for traffic load and climate.

• Forensic Analysis and Maintenance

  • Used during research, maintenance, or failure investigations to assess aggregate composition and detect deviations from design specifications.

• Compliance with European Regulations

  • Essential for organizations seeking CE marking and demonstrating conformity to harmonized European standards for road construction.

Related Standards

• EN 12697-1: Bituminous mixtures - Test methods - Part 1: Soluble binder content
• EN 12697-39: Bituminous mixtures - Test methods - Part 39: Binder content by ignition
• EN 933-1: Tests for geometrical properties of aggregates - Part 1: Determination of particle size distribution - Sieving method
• ISO 3310-1: Test sieves - Technical requirements and testing - Part 1: Metal wire cloth sieves
• ISO 3310-2: Test sieves - Technical requirements and testing - Part 2: Perforated metal plate sieves
• EN 932-6: Tests for general properties of aggregates - Part 6: Definitions of repeatability and reproducibility

Practical Value

Implementing SIST EN 12697-2:2025 ensures the reliability of particle size distribution data for aggregates in bituminous mixtures, which is essential for:

• Consistent road quality and longevity
• Reduced material waste through precise mix designs
• Efficient troubleshooting and optimization of asphalt mix performance
• Harmonization of testing procedures across the European road construction sector

By following this standard, laboratories and producers benefit from recognized methodologies, traceable results, and compliance with international best practices for road building materials.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2025
Nadomešča:
SIST EN 12697-2:2015+A1:2019
Bitumenske zmesi - Preskusne metode - 2. del: Ugotavljanje zrnavosti
Bituminous mixtures - Test methods - Part 2: Determination of particle size distribution
Asphalt - Prüfverfahren - Teil 2: Korngrößenverteilung
Mélanges bitumineux - Méthodes d'essai - Partie 2 : Granulométrie
Ta slovenski standard je istoveten z: EN 12697-2:2024
ICS:
93.080.20 Materiali za gradnjo cest Road construction materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 12697-2
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2024
EUROPÄISCHE NORM
ICS 93.080.20 Supersedes EN 12697-2:2015+A1:2019
English Version
Bituminous mixtures - Test methods - Part 2:
Determination of particle size distribution
Mélanges bitumineux - Méthodes d'essai - Partie 2 : Asphalt - Prüfverfahren - Teil 2: Korngrößenverteilung
Granulométrie
This European Standard was approved by CEN on 25 November 2024.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12697-2:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and symbols . 6
3.1 Terms and definitions . 6
3.2 Symbols . 6
4 Principle . 6
5 Apparatus . 7
6 Sample preparation . 7
7 Procedure . 7
8 Calculation . 7
9 Test report . 8
10 Precision . 8
Bibliography . 9
European foreword
This document (EN 12697-2:2024) has been prepared by Technical Committee CEN/TC 227 “Road
materials”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2025, and conflicting national standards shall be
withdrawn at the latest by June 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12697-2:2015+A1:2019.
EN 12697-2:2015+A1:2019:
— [Introduction] new Clause introduced. Text moved from previous Clause 4 “Significance and use”;
— [1] deletion of the misleading paragraph regarding the applicability of this European standard;
— [2] deletion of the normative reference to EN 932-6. Added to the Bibliography;
— [2] deletion of “for hot mix asphalt” from the titles of test methods in the EN 12697 series;
— [3] title amended to read “Terms, definitions and symbols”;
— [3.1] title amended to read “Terms and definitions”;
— [3.1.1] new Clause introduced for the term “particle size distribution”;
— [3.2] new Clause introduced for symbols;
— [4] title amended to read “Principle”. Following Clauses re-numbered accordingly;
— [5.2] sieve size 2,8 mm replaced by 4 mm. Paragraph revised (Clause 6.2 in the previous edition);
— [5.3] clarification regarding sieve sizes higher than or equal to 4 mm (Clause 6.3 in the previous
edition);
— [6] amended description for the drying to constant mass (Clause 7 in the previous edition);
— [6] clarification that particles shall be completely separated from each other;
— [7] clarification of the minimum amount of material (Clause 8 in the previous edition);
— [9] update of the contents in the test report (Clause 10 in the previous edition);
— [10] Text under Table 1 introduced as table note. NOTE under Table 1 deleted (Clause 11 in the
previous edition).
A list of all parts in a series can be found on the CEN website: www.cencenelec.eu.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN websit
...