SIST EN 12697-21:2020
(Main)Bituminous mixtures - Test methods - Part 21: Indentation using plate specimens
Bituminous mixtures - Test methods - Part 21: Indentation using plate specimens
This document specifies a test method for measuring the indentation of mastic asphalt when it is penetrated at a given temperature, load and for a fixed time period by a standardized cylindrical indentor pin with a circular flat-ended base. This document applies to mastic asphalt with aggregates of maximum nominal size less than or equal to 16 mm.
Asphalt - Prüfverfahren - Teil 21: Eindringversuch an Platten
Dieses Dokument legt ein Prüfverfahren zur Messung der Eindringtiefe in Gussasphalt fest, wenn bei einer festgelegten Temperatur, einer festgelegten Beanspruchung und für eine bestimmte Zeit ein genormter zylindrischer Prüfstempel mit einer kreisrunden flachen Grundfläche in diesen Asphalt eindringt. Dieses Dokument gilt für Gussasphalt mit einer maximalen Nennkorngröße gleich oder kleiner als 16 mm.
Mélanges bitumineux - Méthodes d'essai - Partie 21: Essai de pénétration de plaques
Ce document spécifie une méthode d’essai permettant de mesurer l’indentation d’un asphalte coulé lorsqu’il est soumis à la pénétration d’un poinçon normalisé cylindrique à embout plat circulaire, à une température et charge données, et pour un temps d’application fixé. Ce document s’applique à des asphaltes coulés dont la dimension nominale maximale des granulats est inférieure ou égale à 16 mm.
Bitumenske zmesi - Preskusne metode - 21. del: Preskus z vtiskanjem na plošče
General Information
- Status
- Published
- Public Enquiry End Date
- 19-Feb-2019
- Publication Date
- 01-Apr-2020
- Technical Committee
- CES - Roads
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 05-Mar-2020
- Due Date
- 10-May-2020
- Completion Date
- 02-Apr-2020
Relations
- Effective Date
- 01-May-2020
Overview
SIST EN 12697-21:2020 is a European standard developed by CEN specifying a test method for measuring the indentation behavior of mastic asphalt using plate specimens. This standard is applicable to bituminous mixtures with aggregates up to 16 mm maximum nominal size. The test determines the penetration of a standardized cylindrical indentor pin into the mastic asphalt when subjected to a defined temperature, load, and duration - providing critical data on the material’s hardness and deformation resistance. SIST EN 12697-21:2020 supersedes the 2012 edition, expanding its scope beyond hot mix asphalt and updating test procedures according to current standardization practices.
Key Topics
Test Method: Defines the procedure to measure indentation by pressing a flat-ended cylindrical stainless steel pin into mastic asphalt plates under controlled conditions.
Apparatus Requirements:
- Moulds for preparing test plates (dimensions approx. 100-150 mm diameter, 25 mm height).
- Load transmission systems including lever arm with counterweight, direct charge, or pneumatic actuator.
- Indentor pins with diameters adapted to test surface size (6.35 mm, 11.3 mm, 25.2 mm), all flat-ended.
- Measurement instruments: displacement transducers precise to ±0.05 mm.
- Temperature control devices such as thermostatic water baths maintaining ±1 °C accuracy.
Sample Preparation and Conditioning:
- Sampling according to EN 12697-27, with at least three 1 kg increments.
- Samples cleaned, reheated to pouring temperature, stirred for homogeneity, and cast into moulds.
- Cooling occurs in air only; water cooling is prohibited.
- Specimens stored on flat surfaces at max 25 °C for 12 hours up to 42 days before testing.
Testing Procedure:
- Samples immersed in thermostatic bath at prescribed temperatures (25 °C, 35 °C, 40 °C, or 45 °C).
- Load applied via indentor pin contacting sample surface; penetration recorded over predefined durations (from 70 seconds up to 31 minutes).
- Multiple tests per specimen (3 to 5 repetitions) with results averaged and outliers rejected.
Test Types and Conditions:
- Test W, A, B: Focus on paving and roofing mastic asphalt layers with varying surface size, load, temperature, and duration.
- Test C: Designed for floor screeds and certain paving applications with different parameters.
Result Expression:
- Hardness number reported in tenths of millimeters (1/10 mm).
- Statistical precision and repeatability guidance based on empirical data from NF T 66-002.
Reporting Requirements:
- Include test code, test type, reheating status, test temperature, hardness number, specimen age and storage conditions, and any deviations from standard procedure.
Applications
SIST EN 12697-21:2020 is integral to quality control, mixture design, and performance assessment of mastic asphalt used in:
- Road Construction: Evaluating deformation resistance of bituminous pavement layers, ensuring durability under traffic loading.
- Roofing Layers: Assessing hardness to withstand environmental stresses.
- Floor Screeds and In-Situ Floorings: Determining suitability for industrial flooring applications requiring surface hardness evaluation.
- Material Development and Research: Supporting engineers and researchers in characterizing bituminous mixtures under various thermal and mechanical conditions.
By applying this standardized indentation test, stakeholders can better predict pavement lifespan, optimize mix formulations, and comply with national and European regulations for road construction materials.
Related Standards
- EN 12697 Series: A comprehensive collection of test methods for bituminous mixtures that cover other performance aspects such as sampling (EN 12697-27), stiffness, fatigue, and durability.
- EN 12697-27: Specifically referenced for sampling procedures tied to the indentation tests.
- NF T 66-002: Provides precision data supporting indentation tests and methodologies.
- ISO and IEC Terminology Standards: Supporting terms and definitions aligned with international standardization best practices.
Implementing SIST EN 12697-21:2020 enhances the consistency and reliability of mastic asphalt testing in compliance with European road construction and materials standards, crucial for infrastructure safety and performance optimization.
Frequently Asked Questions
SIST EN 12697-21:2020 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Bituminous mixtures - Test methods - Part 21: Indentation using plate specimens". This standard covers: This document specifies a test method for measuring the indentation of mastic asphalt when it is penetrated at a given temperature, load and for a fixed time period by a standardized cylindrical indentor pin with a circular flat-ended base. This document applies to mastic asphalt with aggregates of maximum nominal size less than or equal to 16 mm.
This document specifies a test method for measuring the indentation of mastic asphalt when it is penetrated at a given temperature, load and for a fixed time period by a standardized cylindrical indentor pin with a circular flat-ended base. This document applies to mastic asphalt with aggregates of maximum nominal size less than or equal to 16 mm.
SIST EN 12697-21:2020 is classified under the following ICS (International Classification for Standards) categories: 93.080.20 - Road construction materials. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 12697-21:2020 has the following relationships with other standards: It is inter standard links to SIST EN 12697-21:2012. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 12697-21:2020 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-maj-2020
Nadomešča:
SIST EN 12697-21:2012
Bitumenske zmesi - Preskusne metode - 21. del: Preskus z vtiskanjem na plošče
Bituminous mixtures - Test methods - Part 21: Indentation using plate specimens
Asphalt - Prüfverfahren - Teil 21: Eindringversuch an Platten
Mélanges bitumineux - Méthodes d'essai - Partie 21: Essai de pénétration de plaques
Ta slovenski standard je istoveten z: EN 12697-21:2020
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 12697-21
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 93.080.20 Supersedes EN 12697-21:2012
English Version
Bituminous mixtures - Test methods - Part 21: Indentation
using plate specimens
Mélanges bitumineux - Méthodes d'essai - Partie 21 : Asphalt - Prüfverfahren - Teil 21: Eindringversuch an
Essai d'indentation de plaques Platten
This European Standard was approved by CEN on 18 November 2019.
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, Turkey 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12697-21:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Apparatus . 4
4.1 Moulding of test plates of mastic asphalt . 4
4.2 Apparatus for the indentation test . 4
4.2.1 System for the load transmission . 4
4.2.2 Apparatus for measuring indentation . 5
4.2.3 Apparatus for temperature regulation . 5
5 Sampling and preparation of laboratory sample . 5
5.1 Sampling . 5
5.2 Preparation of the samples . 5
6 Procedure. 6
7 Calculation and expression of results . 7
8 Precision . 7
9 Test report . 7
Bibliography . 8
European foreword
This document (EN 12697-21:2020) 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 August 2020, and conflicting national standards shall
be withdrawn at the latest by August 2020.
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 12697-21:2012.
The following is a list of significant technical changes since the previous edition:
— the title no longer makes the method exclusively for hot mix asphalt;
— [ge] editorial update according to current standard template;
— [Clause 3] new clause: 3 Terms and definitions introduced according ISO/IEC Directives – Part 2.
Following clauses renumbered accordingly;
— [Bibliography] standards not referred to in the test method deleted.
A list of all parts in the EN 12697 series can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Turkey and the
United Kingdom.
1 Scope
This document specifies a test method for measuring the indentation of mastic asphalt when it is
penetrated at a given temperature, load and for a fixed time period by a standardized cylindrical
indentor pin with a circular flat-ended base. This document applies to mastic as
...
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