SIST EN 12697-47:2023

Bituminous mixtures - Test methods - Part 47: Determination of the ash content of natural asphalts

This document specifies a test method to determine the ash content in natural asphalts (including lake asphalts), binders containing natural asphalts or bitumens. For the method to apply, it is essential that any mineral matter in the binder be finely divided and cannot exceed a mass fraction of 45 %.

Asphalt - Prüfverfahren - Teil 47: Bestimmung des Aschegehaltes von Naturasphalt

Dieses Dokument legt ein Prüfverfahren zur Bestimmung des Aschegehaltes von Naturasphalt (einschließlich Naturasphalt aus Asphaltseen) und von Bindemitteln, die Naturasphalt oder Bitumen enthalten, fest. Damit das Verfahren anwendbar ist, ist es essenziell, dass die im Bindemittel enthaltenen Mineralstoffe fein verteilt sein und ihr Anteil einen Massenanteil von 45 % nicht überschreiten kann.

Mélanges bitumineux - Méthodes d'essai pour mélange hydrocarboné à chaud - Partie 47 : Détermination de la teneur en cendres des bitumes naturels

La présente Norme Européenne décrit une méthode d’essai destinée à déterminer la teneur en cendres des bitumes naturels ainsi que des liants comprenant des bitumes naturels. Pour pouvoir appliquer la méthode, il est essentiel que toute matière minérale présente dans le liant soit finement divisée et ne pas dépasser 45% en masse.

Bituminizirane zmesi - Preskusne metode - 47. del: Ugotavljanje deleža pepela v naravnem asfaltu

Ta dokument opisuje preskusno metodo za ugotavljanje deleža pepela v naravnem asfaltu (vključno z jezerskim asfaltom), pri čemer veziva vsebujejo naravni asfalt ali bitumne. Za uporabo metode je bistveno, da so vse mineralne snovi v vezivu v fino zrnati obliki in ne presegajo 45 % glede na maso.

General Information

• Status: Published
• Public Enquiry End Date: 19-Dec-2021
• Publication Date: 07-Nov-2023
• ICS: 93.080.20 - Road construction materials
• Technical Committee: CES - Roads
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 21-Sep-2023
• Due Date: 26-Nov-2023
• Completion Date: 08-Nov-2023
• Ref Project: EN 12697-47:2023 - Bituminous mixtures - Test methods - Part 47: Determination of the ash content of natural asphalts

Relations

• Replaces: SIST EN 12697-47:2010 - Bituminous mixtures - Test methods for hot mix asphalt - Part 47: Determination of the ash content of natural asphalts
• Effective Date: 01-Dec-2023

Overview

EN 12697-47:2023 (CEN) is a European test method for determining the ash content of natural asphalts (including lake asphalts) and binders containing natural asphalt or bitumen. The standard specifies laboratory procedures for sample preparation, controlled heating/ignition and weighing to quantify inorganic residue (ash) remaining after ignition. It replaces EN 12697-47:2010 and was approved by CEN in July 2023.

Key topics and technical requirements

• Scope: Applies where mineral matter in the binder is finely divided and does not exceed a mass fraction of 45%.
• Sample handling: Sampling guidance references EN 58 (sampling of bituminous binders). Materials crushable at ambient temperature are reduced to pass a 4 mm sieve; non-crushable materials are softened in an oven and stirred to disperse mineral matter.
• Apparatus: Silica, porcelain or platinum crucibles (~120 ± 20 ml), a furnace capable of 650 ± 50 °C, desiccator, gas burner (or electric pre-incinerator), oven for softening, and a balance with max permissible error 0.001 g (weighings to 0.005 g).
• Procedure: Weigh empty crucible, add a sample quantity producing between 0.10 g and 0.35 g ash, pre-incinerate to remove volatiles, ignite at 650 ± 50 °C until carbon-free, and reheat until constant mass is achieved.
• Calculation: Determine ash mass as the inorganic residue (difference between final crucible+ash and empty crucible) and express as a mass proportion (%) of the original sample.
• Precision: Repeatability (same operator) suspect if differing by > 0.3%; reproducibility (different labs) suspect if differing by > 0.9%.
• Reporting: Results to include standard reference, sample ID, sample mass, ash proportion to nearest 0.01%, deviations, observations and test date.

Applications and users

• Quality control for asphalt binders and natural asphalts used in road construction and pavement materials.
• Materials testing laboratories performing binder characterization and specification compliance.
• Asphalt producers and pavement engineers assessing mineral filler content or verifying lake asphalt composition.
• Procurement and specification authors who require standardized ash-content data for performance or durability evaluations.

Related standards

• EN 58 (Bitumen and bituminous binders - Sampling) - cited normative reference.
• EN 12697 series - other test methods for bituminous mixtures; EN 12697-47:2023 supersedes EN 12697-47:2010.

Keywords: EN 12697-47:2023, ash content, natural asphalts, test method, bituminous mixtures, CEN, lake asphalt, ignition method, sample preparation, bitumen testing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2023
Nadomešča:
SIST EN 12697-47:2010
Bituminizirane zmesi - Preskusne metode - 47. del: Ugotavljanje deleža pepela v
naravnem asfaltu
Bituminous mixtures - Test methods - Part 47: Determination of the ash content of
natural asphalts
Asphalt - Prüfverfahren - Teil 47: Bestimmung des Aschegehaltes von Naturasphalt
Mélanges bitumineux - Méthodes d'essai pour mélange hydrocarboné à chaud - Partie
47 : Détermination de la teneur en cendres des bitumes naturels
Ta slovenski standard je istoveten z: EN 12697-47:2023
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 12697-47
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2023
EUROPÄISCHE NORM
ICS 93.080.20 Supersedes EN 12697-47:2010
English Version
Bituminous mixtures - Test methods - Part 47:
Determination of the ash content of natural asphalts
Mélanges bitumineux - Méthodes d'essai pour mélange Asphalt - Prüfverfahren - Teil 47: Bestimmung des
hydrocarboné à chaud - Partie 47 : Détermination de la Aschegehaltes von Naturasphalt
teneur en cendres des bitumes naturels
This European Standard was approved by CEN on 16 July 2023.

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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12697-47:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Apparatus . 4
6 Sample preparation . 5
7 Procedure. 5
8 Calculation . 6
9 Precision . 6
9.1 Repeatability . 6
9.2 Reproducibility . 6
10 Test report . 6

European foreword
This document (EN 12697-47:2023) 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 March 2024, and conflicting national standards shall be
withdrawn at the latest by March 2024.
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 12697-47:2010.
EN12697-47:2023 includes the following significant technical changes with respect to EN 12697-
47:2010:
— the title no longer refers to hot mix asphalt;
— general editorial update according to current standard template and CEN/CENELEC Internal
Regulations, Part 3:2019;
— general editorial change of “proportional mass” to read “mass proportion”;
— [3.2] update of definition of natural asphalt considering solvent (toluene) for assessing solubility;
— [5.4] NOTE amended to normal text;
— [5.5] deletion of “(optional)” as an oven is pre-scribed in Clause 6.3;
— [5.8] deletion of “(optional)” as a 4 mm sieve is pre-scribed in Clause 6.2;
— [Clause 10] items to be r
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