SIST EN 933-4:2008
(Main)Tests for geometrical properties of aggregates - Part 4: Determination of particle shape - Shape index
Tests for geometrical properties of aggregates - Part 4: Determination of particle shape - Shape index
This standard describes the reference method used for type testing in cases of dispute, for the determination of the shape index of coarse aggregates. For other purposes, in particular factory production control, other methods may be used provided an appropriate working relationship with the reference method has been established.
The test method specified in this European Standard is applicable to particle size fractions di/Di where Di ≤ 63 mm and di ≥ 4 mm.
Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 4: Bestimmung der Kornform - Kornformkennzahl
Diese Norm beschreibt das Referenzverfahren für die Erstprüfung und in Streitfällen für die Bestimmung der Kornformkennzahl von groben Gesteinskörnungen. Für andere Zwecke, speziell im Rahmen der werkseigenen Produktionskontrolle, dürfen andere Verfahren angewendet werden, sofern ein ausreichender Zusammenhang mit dem Referenzverfahren nachgewiesen wurde.
Das in dieser Europäischen Norm festgelegte Prüfverfahren ist für Kornklassen di/Di mit Di 63 mm und di 4 mm anwendbar.
Essais pour déterminer les caractéristiques géométriques des granulats - Partie 4: Détermination de la forme des granulats - Indice de forme
La présente norme décrit la méthode de référence utilisée pour les essais de type et, en cas de conflit, pour la détermination de l’indice de forme des gravillons. Pour d'autres objectifs, en particulier dans le cadre du contrôle de la production en usine, d'autres méthodes peuvent être employées si une corrélation appropriée avec la méthode de référence a été établie.
La méthode d'essai spécifiée dans la présente Norme européenne s'applique à la fraction granulaire di/Di où Di = 63 mm et di = 4 mm.
Preskusi geometričnih lastnosti agregatov - 4. del: Določevanje oblike zrn - Modul oblike
General Information
- Status
- Published
- Publication Date
- 11-Aug-2008
- Technical Committee
- AGR - Aggregates
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 10-Jul-2008
- Due Date
- 14-Sep-2008
- Completion Date
- 12-Aug-2008
- Directive
- Harmonized Standard305/2011 - 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
Not Harmonized89/106/EEC - Construction products
Relations
- Effective Date
- 01-Sep-2008
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Referred By
SIST EN 12620:2013 - Aggregates for concrete - Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
SIST EN 933-4:2008 specifies the reference test method for determining the shape index of coarse aggregates. This particle shape measurement standard is essential for assessing aggregate geometry in construction materials, particularly in cases where type testing or dispute resolution is required. The standard applies to aggregates with particle size fractions between 4 mm and 63 mm. While the method is primarily a reference for official testing, it also supports the establishment of working relationships with alternative techniques for factory production control, as long as appropriate correlation with the reference method is ensured.
Adherence to SIST EN 933-4:2008 helps ensure reliable measurement of aggregate shape properties, contributing to material consistency and conformity with European and international quality standards.
Key Topics
- Scope: Defines the application of the method to coarse aggregates with size fractions di/Di, where Di ≤ 63 mm and di ≥ 4 mm.
- Test Principle: The shape index is determined by classifying particles according to the ratio of their length (L) to thickness (E). Particles with an L/E ratio greater than 3 are considered non-cubical.
- Reference Method: Serves as the definitive method for determining shape index in type testing and dispute scenarios.
- Alternative Methods: Permits use of other methods in routine production control, provided they are validated against the referenced test.
- Aggregate Sizing: The testing method involves sieving aggregates to isolate appropriate particle size fractions.
- Test Procedure: Specifies equipment (slide gauge, sieves, oven), preparation steps (drying to constant mass, sieving), and evaluation (measurement of individual particle dimensions).
- Data Reporting: Recommends comprehensive reporting, including sample identification, particle size fractions tested, and the calculated shape index.
Applications
The shape index determination outlined in SIST EN 933-4:2008 has broad applications within the construction and civil engineering industries. Key areas include:
- Aggregate Selection for Concrete and Asphalt: Aggregate shape influences workability, compaction, and durability. This standard assists in evaluating suitability for use in concrete, bituminous mixtures, and road base materials.
- Quality Control in Production: Used by aggregate producers for internal quality checks and to demonstrate conformity with specified requirements.
- Type Testing and Disputes: Provides a harmonized, reproducible method for verifying aggregate shape in contractual or regulatory contexts.
- Material Specification Compliance: Ensures materials meet the required geometric standards set out in national and European regulations for building and infrastructure projects.
Complying with the standard supports enhanced product performance, longer service life, and the fulfillment of project specifications.
Related Standards
SIST EN 933-4:2008 is part of a comprehensive suite of aggregate testing standards. Related documents include:
- SIST EN 933-1: Particle size distribution - Sieving method
- SIST EN 933-2: Particle size distribution - Test sieves, nominal size of apertures
- SIST EN 933-3: Determination of particle shape - Flakiness index
- SIST EN 1097-6: Determination of particle density and water absorption
- SIST EN 932-2 & EN 932-5: Sample reduction methods and general equipment requirements
Adopting these standards ensures a holistic approach to testing the geometrical, mechanical, physical, and chemical properties of aggregates, supporting material quality in construction projects.
Keywords: aggregate testing, shape index, geometrical properties, coarse aggregate, construction materials, SIST EN 933-4:2008, particle shape, European standard, quality control, reference method
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Frequently Asked Questions
SIST EN 933-4:2008 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Tests for geometrical properties of aggregates - Part 4: Determination of particle shape - Shape index". This standard covers: This standard describes the reference method used for type testing in cases of dispute, for the determination of the shape index of coarse aggregates. For other purposes, in particular factory production control, other methods may be used provided an appropriate working relationship with the reference method has been established. The test method specified in this European Standard is applicable to particle size fractions di/Di where Di ≤ 63 mm and di ≥ 4 mm.
This standard describes the reference method used for type testing in cases of dispute, for the determination of the shape index of coarse aggregates. For other purposes, in particular factory production control, other methods may be used provided an appropriate working relationship with the reference method has been established. The test method specified in this European Standard is applicable to particle size fractions di/Di where Di ≤ 63 mm and di ≥ 4 mm.
SIST EN 933-4:2008 is classified under the following ICS (International Classification for Standards) categories: 91.100.15 - Mineral materials and products. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 933-4:2008 has the following relationships with other standards: It is inter standard links to SIST EN 933-4:2000, SIST EN 1097-6:2022, SIST EN 933-2:2020, SIST EN 932-5:2012, SIST EN 933-1:2012, SIST EN 13450:2013, SIST EN 12620:2002+A1:2008, SIST EN 13043:2013, SIST EN 12620:2013, SIST EN 13242:2003+A1:2008, SIST EN 13242:2013, SIST EN 13450:2003, SIST EN 16236:2018, SIST EN 1744-4:2005, SIST EN 1744-4:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 933-4:2008 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC; Standardization Mandates: M/124, M/125. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN 933-4:2008 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2008
1DGRPHãþD
SIST EN 933-4:2000
3UHVNXVLJHRPHWULþQLKODVWQRVWLDJUHJDWRYGHO 'RORþHYDQMHREOLNH]UQ0RGXO
REOLNH
Tests for geometrical properties of aggregates - Part 4: Determination of particle shape -
Shape index
Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 4:
Bestimmung der Kornform - Kornformkennzahl
Essais pour déterminer les caractéristiques géométriques des granulats - Partie 4:
Détermination de la forme des granulats - Indice de forme
Ta slovenski standard je istoveten z: EN 933-4:2008
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.
EUROPEAN STANDARD
EN 933-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2008
ICS 91.100.15 Supersedes EN 933-4:1999
English Version
Tests for geometrical properties of aggregates - Part 4:
Determination of particle shape - Shape index
Essais pour déterminer les caractéristiques géométriques Prüfverfahren für geometrische Eigenschaften von
des granulats - Partie 4: Détermination de la forme des Gesteinskörnungen - Teil 4: Bestimmung der Kornform -
granulats - Coefficient de forme Kornformkennzahl
This European Standard was approved by CEN on 4 February 2008.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 933-4:2008: E
worldwide for CEN national Members.
Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Principle.5
5 Apparatus .5
6 Preparation of test portion.6
7 Procedure .7
8 Calculation and expression of results.8
9 Test report .9
Annex A (informative) Example of a test data sheet used for determining the shape index of
coarse aggregate .11
Foreword
This document (EN 933-4:2008) has been prepared by Technical Committee CEN/TC 154 “Aggregates”, 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 September 2008, and conflicting national standards shall be
withdrawn at the latest by September 2008.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 933-4:1999.
This European Standard is one of a series of standards for tests for geometrical properties of aggregates. Test
methods for other properties of aggregates are covered by Parts of the following European Standards:
EN 932, Tests for general properties of aggregates
EN 1097, Tests for mechanical and physical properties of aggregates
EN 1367, Tests for thermal and weathering properties of aggregates
EN 1744, Tests for chemical properties of aggregates
EN 13179, Tests for filler aggregate used in bituminous mixtures
The other parts of EN 933 are:
Part 1 - Determination of particle size distribution - Sieving method
Part 2 - Determination of particle size distribution - Test sieves, nominal size of apertures
Part 3 - Determination of particle shape - Flakiness index
Part 5 - Determination of percentage of crushed and broken surfaces in coarse aggregate particles
Part 6 - Assessment of surface characteristics - Flow coefficient of aggregates
Part 7 - Determination of shell content - Percentage of shells in coarse aggregates
Part 8 - Assessment of fines - Sand equivalent test
Part 9 - Assessment of fines - Methylene blue test
Part 10 - Assessment of fines - Grading of fillers (air jet sieving)
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
1 Scope
This standard describes the reference method used for type testing and in cases of dispute, for the
determination of the shape index of coarse aggregates. For other purposes, in particular factory production
control, other methods may be used provided an appropriate working relationship with the reference method has
been established.
The test method specified in this European Standard is applicable to particle size fractions d/D where D
i i i
≤ 63 mm and d ≥ 4 mm.
i
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 932-2, Test for general properties of aggregates - Part 2: Methods for reducing laboratory samples
EN 932-5, Tests for general properties of aggregates - Part 5: Common equipment and calibration
EN 933-1, Tests for geometrical properties of aggregates - Part 1: Determination of particle size distribution -
Sieving method
EN 933-2, Tests for geometrical properties of aggregates - Part 2: Determination of particle size distribution -
Test sieves, nominal size of apertures
EN 1097-6, Tests for mechanical and physical properties of aggregates - Part 6: Determination of the particle
density and water absorption
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
aggregate size
designation of aggregate in terms of lower (d) and upper (D) sieve sizes, expressed as d/D
NOTE This designation accepts the presence of some particles which will be retained on the upper sieve (oversize) and
some which will pass the lower sieve (undersize).
3.2
particle size fraction d /D
i i
fraction of an aggregate passing the larger (D ) of two sieves and retained on th
...