EN 933-3:2012
(Main)Tests for geometrical properties of aggregates - Part 3: Determination of particle shape - Flakiness index
Tests for geometrical properties of aggregates - Part 3: Determination of particle shape - Flakiness index
This European Standard describes the reference method, used for type testing and in case of dispute, for determination of the flakiness index of aggregates. For other purposes, in particular production control, other methods may be used, provided that an appropriate working relationship with the reference method has been established.
This European Standard applies to natural, manufactured or recycled aggregates.
The test procedure specified in this part of this European Standard is not applicable to particle sizes less than 4 mm or greater than 100 mm.
Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 3: Bestimmung der Kornform - Plattigkeitskennzahl
Diese Europäische Norm beschreibt das Referenzverfahren, das für die Typprüfung und im Streitfall für die Bestimmung der Plattigkeitskennzahl von Gesteinskörnungen angewendet wird. Für andere Zwecke, speziell im Rahmen der werkseigenen Produktionskontrolle, dürfen andere Verfahren angewendet werden, sofern ein ausreichender Zusammenhang mit dem Referenzverfahren nachgewiesen wurde.
Diese Europäische Norm gilt für Gesteinskörnungen, die natürlicher, künstlicher (industrieller) Herkunft oder aus recyclierten Stoffen hergestellt sind.
Das in diesem Teil der Europäischen Norm festgelegte Verfahren gilt nicht für Korngrößen < 4 mm oder > 100 mm.
Essais pour déterminer les caractéristiques géométriques des granulats - Partie 3: Détermination de la forme des granulats - Coefficient d'aplatissement
La présente Norme européenne décrit la méthode de référence servant aux essais de type initiaux et, en cas de désaccord, à la détermination du coefficient d’aplatissement des granulats. Pour les besoins du contrôle de la production en particulier, d’autres méthodes peuvent être utilisées sous réserve qu’une corrélation appropriée avec la méthode de référence ait été établie.
La présente Norme européenne s’applique à des agrégats naturels, artificiels ou recyclés.
Le mode opératoire de l'essai indiqué dans cette partie de la norme européenne ne s'applique pas aux particules de dimension inférieure à 4 mm ou supérieure à 100 mm.
Preskusi geometričnih lastnosti agregatov - 3. del: Določevanje oblike zrn - Modul ploščatosti
Ta evropski standard opisuje referenčno metodo, ki se uporablja za tipsko preskušanje in v primeru spora za določevanje modula ploščatosti agregatov. Za druge namene, zlasti za kontrolo proizvodnje, se lahko uporabijo druge metode, če obstaja primerna delovna povezava z referenčno metodo. Ta evropski standard se uporablja za naravne, umetne ali reciklirane agregate. Preskusni postopek iz tega dela tega evropskega standarda se ne uporablja za zrna, manjša od 4 mm ali večja od 100 mm.
General Information
- Status
- Published
- Publication Date
- 17-Jan-2012
- Withdrawal Date
- 30-Jul-2012
- Technical Committee
- CEN/TC 154 - Aggregates
- Drafting Committee
- CEN/TC 154/SC 6 - Test methods
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 05-Sep-2017
- Completion Date
- 14-Apr-2025
Relations
- Effective Date
- 08-Jun-2022
- Effective Date
- 23-Mar-2009
Overview
EN 933-3:2012 - Tests for geometrical properties of aggregates - Part 3: Determination of particle shape - Flakiness index is a CEN reference method for determining the flakiness of aggregate particles. It is the prescribed method for type testing and for resolving disputes; alternative methods may be used for production control provided they have a validated relationship to this reference method. The standard applies to natural, manufactured or recycled aggregates with particle sizes between 4 mm and 100 mm.
Key topics and technical requirements
- Scope & purpose
- Reference method for flakiness index (FI); not applicable to particles <4 mm or >100 mm.
- Used for type testing and dispute resolution; production control may use alternative validated methods.
- Principle
- Two-step sieving: first separate sample into size fractions (di/Di), then sieve each fraction on bar sieves with slot width = Di/2.
- FI = (M2 / M1) × 100, where M1 = total mass of tested size fractions and M2 = total mass passing the bar sieves.
- Apparatus
- Test sieves with square apertures per EN 933-2 (100 mm down to 4 mm).
- Corresponding bar sieves (parallel cylindrical bars) with slot widths specified for each size fraction.
- Balance accurate to ±0.1% of test portion mass.
- Ventilated oven at (110 ± 5) °C for drying to constant mass.
- Sample preparation & procedure
- Reduce laboratory sample per EN 932-2; test portion mass per EN 933-1.
- Dry to constant mass, sieve on test sieves, then on bar sieves; weigh fractions passing slots.
- Reporting
- Mandatory: reference to EN 933-3, sample ID, laboratory ID, test portion mass, overall FI (nearest whole number), sample reception date.
- Optional: source, sampling description, FI by fraction, test date, sampling certificate.
- Precision
- Annex B provides repeatability and reproducibility data from interlaboratory studies and formulas for other sizes/levels.
Applications and users
- Who uses it:
- Aggregate producers and processors (natural, manufactured, recycled)
- Independent testing laboratories and quality control technicians
- Civil engineers, road authorities, contractors specifying materials
- Contract administrators and dispute resolution panels
- Practical uses:
- Acceptance testing and contractual compliance for aggregates
- Assessing particle shape for asphalt and concrete mix design
- Quality control in quarrying, recycling plants and aggregate production
- Supporting performance-related specifications and resolving disputes
Related standards
- EN 933 series (other geometrical tests: Part 1, Part 2, Part 4–11)
- EN 932-1/2/5 (general aggregate tests, sample reduction, equipment)
- EN 1097 (mechanical/physical properties of aggregates)
Keywords: EN 933-3:2012, flakiness index, aggregates, particle shape, bar sieves, sieving method, CEN, aggregate testing, quality control.
Frequently Asked Questions
EN 933-3:2012 is a standard published by the European Committee for Standardization (CEN). Its full title is "Tests for geometrical properties of aggregates - Part 3: Determination of particle shape - Flakiness index". This standard covers: This European Standard describes the reference method, used for type testing and in case of dispute, for determination of the flakiness index of aggregates. For other purposes, in particular production control, other methods may be used, provided that an appropriate working relationship with the reference method has been established. This European Standard applies to natural, manufactured or recycled aggregates. The test procedure specified in this part of this European Standard is not applicable to particle sizes less than 4 mm or greater than 100 mm.
This European Standard describes the reference method, used for type testing and in case of dispute, for determination of the flakiness index of aggregates. For other purposes, in particular production control, other methods may be used, provided that an appropriate working relationship with the reference method has been established. This European Standard applies to natural, manufactured or recycled aggregates. The test procedure specified in this part of this European Standard is not applicable to particle sizes less than 4 mm or greater than 100 mm.
EN 933-3:2012 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.
EN 933-3:2012 has the following relationships with other standards: It is inter standard links to EN 933-3:1997/A1:2003, EN 933-3:1997. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 933-3:2012 is associated with the following European legislation: Standardization Mandates: M/125 REV1. 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.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.SORãþDWRVWLPrüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 3: Bestimmung der Kornform - PlattigkeitskennzahlEssais pour déterminer les caractéristiques géométriques des granulats - Partie 3: Détermination de la forme des granulats - Coefficient d'aplatissementTests for geometrical properties of aggregates - Part 3: Determination of particle shape - Flakiness index91.100.15Mineralni materiali in izdelkiMineral materials and productsICS:Ta slovenski standard je istoveten z:EN 933-3:2012SIST EN 933-3:2012en,fr,de01-maj-2012SIST EN 933-3:2012SLOVENSKI
STANDARDSIST EN 933-3:1999/A1:2004SIST EN 933-3:19991DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 933-3
January 2012 ICS 91.100.15 Supersedes EN 933-3:1997English Version
Tests for geometrical properties of aggregates - Part 3: Determination of particle shape - Flakiness index
Essais pour déterminer les caractéristiques géométriques des granulats - Partie 3: Détermination de la forme des granulats - Coefficient d'aplatissement
Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 3: Bestimmung der Kornform - Plattigkeitskennzahl This European Standard was approved by CEN on 29 October 2011.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 933-3:2012: ESIST EN 933-3:2012
Example of test data sheet . 10Annex B (informative)
Precision . 11
Part 3: Determination of particle shape — Flakiness index; Part 4: Determination of particle shape — Shape 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 for coarse aggregates; Part 8: Assessment of fines — Sand equivalent test; SIST EN 933-3:2012
...
SIST EN 933-3:2012は、集計の幾何学的特性に関するヨーロッパ標準の中で、特にフレーク指数の測定方法に焦点を当てた重要な文書です。この標準は、集計のフレーク指数を測定するための基準的な方法を定義しており、種類試験や紛争発生時において重要な役割を果たします。そのため、業界においての信頼性が高く、確立されたワーキング関係を基に他の方法が使用可能であることもしっかりと規定されています。 この標準は、天然集計、製造集計、またはリサイクル集計のいずれにも適用可能であり、その広範な適用範囲が特徴です。ただし、粒子サイズが4mm未満または100mmを超える場合には、この試験手順は適用されないため、その点に注意が必要です。 フレーク指数は、集計の形状を評価するための重要な指標であり、建設や土木工事など様々な分野での用途があります。この測定が行われることで、集計の品質が管理され、最終製品の強度や耐久性に影響を与える要因を的確に把握することができます。 全体として、SIST EN 933-3:2012は、集計の品質管理において欠かせない標準であり、研究者や実務家に広く支持されています。その明確な手順と定義は、業界のベストプラクティスを促進するための重要な基盤を提供しています。
Die EN 933-3:2012 ist eine bedeutende europäische Norm, die sich mit der Bestimmung geometrischer Eigenschaften von Zuschlagstoffen befasst, insbesondere mit dem Flakigkeitsindex. Der Flakigkeitsindex ist ein entscheidendes Maß zur Bewertung der Form von Aggregaten, welches direkt Einfluss auf die Qualität und Performance von Beton und anderen Baustellenmaterialien hat. Der Geltungsbereich dieser Norm ist klar definiert und umfasst natürliche, hergestellte sowie recycelte Zuschlagstoffe. Dies macht die EN 933-3:2012 besonders relevant für eine breite Palette von Anwendungen im Bauwesen. Dieser Umstand hebt die Norm als Standardverfahren hervor, das sowohl für Typprüfungen als auch im Streitfall verwendet werden kann. Obwohl es auch alternative Methoden für Produktionskontrollen gibt, setzt die Norm einen unverzichtbaren Referenzrahmen, der sicherstellt, dass die Testergebnisse konsistent und vergleichbar sind. Ein weiteres starkes Element der EN 933-3:2012 ist die klare Abgrenzung der anwendbaren Partikelgrößen. Der Test ist speziell für Partikelgrößen zwischen 4 mm und 100 mm konzipiert, wodurch er für die meisten gängigen Anwendungen im Bauwesen geeignet ist. Diese Einschränkung gewährleistet, dass die Ergebnisse der Flakigkeitsbestimmung aussagekräftig und praktikabel für die relevanten Materialien sind. Zusammenfassend lässt sich sagen, dass die Norm EN 933-3:2012 eine essentielle sowie zuverlässige Ressource für Fachleute in der Bauindustrie darstellt, die mit der Qualitätssicherung von Zuschlagstoffen betraut sind. Der Flakigkeitsindex, wie in diesem Dokument beschrieben, spielt eine zentrale Rolle bei der Bewertung der Materialeigenschaften und ist daher von erheblicher Relevanz für die Baustellenqualität und -sicherheit.
La norme EN 933-3:2012 représente une avancée significative dans l'évaluation des propriétés géométriques des granulats, en se concentrant spécifiquement sur la détermination de l'indice de platitude. Ce document normatif établit une méthode de référence pour les essais de type et en cas de litige, ce qui en fait un outil précieux pour les professionnels du secteur. Son champ d'application s'étend aux granulats naturels, fabriqués ou recyclés, ce qui en souligne la pertinence dans divers contextes, qu'il s'agisse de matériaux nouveaux ou de ceux issus de la réutilisation. Une des forces majeures de cette norme est sa clarté dans la procédure d'essai, qui garantit des résultats fiables et reproductibles. En établissant un cadre précis, la norme favorise une harmonisation des pratiques au sein de l'industrie, ce qui est crucial pour la qualité des projets de construction. De plus, bien que d'autres méthodes puissent être utilisées à des fins de contrôle de production, la norme EN 933-3:2012 insiste sur l'importance de maintenir une relation de travail appropriée avec la méthode de référence, ce qui renforce la rigueur et la confiance dans les résultats obtenus. Il est également important de noter que la norme précise que la procédure d'essai ne s'applique pas aux particules de taille inférieure à 4 mm ou supérieure à 100 mm. Cette limitation garantit que les résultats sont pertinents pour les granulats de taille appropriée, ce qui souligne le souci d'exactitude dans les mesures de l'indice de platitude. Ainsi, la norme se révèle essentielle pour les professionnels cherchant à s'assurer que leurs granulats respectent les exigences de performance. En conséquence, la norme EN 933-3:2012 se positionne comme un document clé pour quiconque souhaite obtenir une évaluation précise et standardisée de l'indice de platitude des granulats, garantissant que les pratiques d'essai sont en adéquation avec les exigences techniques de l'industrie.
EN 933-3:2012 표준은 집합체의 형상 특성을 테스트하기 위한 유럽 표준 중 하나로, 특히 조각의 편평도 지수를 측정하기 위한 방법을 제시하고 있습니다. 이 표준은 집합체에 대한 유형 테스트와 분쟁 상황에서의 참조 방법으로 사용되며, 자연, 제조 또는 재활용 집합체에도 적용됩니다. 이 표준의 강점은 그 명확한 테스트 절차와 신뢰성을 제공한다는 점입니다. 4 mm 이상 100 mm 이하 입자의 형상 측정을 목적으로 하며, 편평도 지수를 정확하게 결정할 수 있는 체계적인 접근 방식을 제공합니다. 이처럼 표준화된 방법은 품질 확보에 있어 매우 중요한 역할을 하며, 각종 건설 및 토목 분야에서 유용하게 활용될 수 있습니다. 또한, EN 933-3:2012는 다른 목적으로 사용될 수 있는 다양한 테스트 방법도 인정합니다. 하지만 그 경우에도 참조 방법과의 적절한 작업 관계를 구축해야 함을 강조합니다. 이는 테스트 결과의 신뢰성을 보장하며, 다양한 응용 분야에서 활용될 수 있는 유연성을 제공합니다. 결론적으로, EN 933-3:2012 표준은 집합체의 편평도 지수를 정확하게 측정하고, 품질 관리 및 생산 과정에서 신뢰할 수 있는 기준을 제공합니다. 이로 인해, 건설 및 재료 산업에서의 관련성 또한 매우 높아집니다.
The EN 933-3:2012 standard provides a comprehensive framework for determining the flakiness index of aggregates, which is a critical aspect of evaluating their geometrical properties. This standard is pivotal in various sectors, including construction, where the shape of aggregates influences the overall performance of concrete and asphalt mixes. One of the key strengths of EN 933-3:2012 is its clear delineation as a reference method for type testing and in scenarios of dispute resolution. This aspect ensures that the evaluation of particle shape is consistent and reliable, thereby fostering trust in the results obtained. Moreover, the standard recognizes the diversity of aggregates by applying to natural, manufactured, or recycled materials, reflecting current industry practices and sustainability efforts. The scope of the standard is well-defined, stipulating that it is not applicable to particle sizes less than 4 mm or greater than 100 mm. This specification is crucial, as it helps to maintain a focused application of the testing procedure within relevant size ranges, ensuring that the results are pertinent to typical aggregate uses. Furthermore, EN 933-3:2012 allows for the flexibility of employing alternative methods for production control, provided that a correlation with the reference method is established. This flexibility is advantageous for manufacturers aiming to optimize their processes while still adhering to industry standards. Overall, the EN 933-3:2012 standard plays a vital role in ensuring that the flakiness index of aggregates can be measured accurately, supporting the integrity of construction materials and practices. Its strengths lie in its clear application guidance, adaptability, and reassurance of quality through a standardized reference method. The relevance of this standard continues to rise as industries increasingly emphasize the importance of geometric properties in the performance of aggregate materials.
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