Bituminous mixtures - Test methods - Part 8: Determination of void characteristics of bituminous specimens

This document describes a procedure for calculating volumetric characteristics of a compacted bituminous specimen: the air voids content (Va), the voids content in the mineral aggregate filled with binder (VFB) and the voids content in the mineral aggregate filled with binder and additives (VFBad) for the case of mixtures containing additives in their composition.
The method is suitable for specimens which are laboratory compacted or specimens cut from the pavement after placement and compacting or from laboratory compacted slabs, either by coring or sawing.
These volumetric characteristics can be used as mix design criteria or as parameters for evaluating the mixture after placing and compacting in the road.

Asphalt - Prüfverfahren - Teil 8: Bestimmung von volumetrischen Charakteristiken von Asphalt-Probekörpern

Diese Dokument beschreibt ein Verfahren zur Berechnung von volumetrischen Charakteristiken eines verdichteten Asphalt-Probekörpers: des Hohlraumgehalts Va, des Bindemittelausfüllungsgrads VFB und – für Gemische, die Zusatzstoffe enthalten – des Bindemittel  und Zusatzstoffausfüllungsgrads VFBad.
Dieses Verfahren ist für im Labor verdichtete Probekörper sowie für Probekörper, die durch Bohren oder Sägen einer eingebauten und verdichteten Fahrbahndecke oder einer im Labor verdichteten Platte entnommen wurden, geeignet.
Diese volumetrischen Charakteristiken können als Kriterium bei einer Asphaltmischgutkonzeption oder als Parameter für seine Beurteilung nach dem Einbau und der Verdichtung in der Straße verwendet werden.

Matériaux enrobés - Méthodes d'essai - Partie 8: Détermination de la teneur en vides caractéristiques des matériaux bitumineux

Ce document décrit la procédure permettant de calculer des caractéristiques volumétriques d’une éprouvette bitumineuse compactée : la teneur en vide d'air Va), la teneur en vide du squelette granulaire comblés par le liant (VFB), et la teneur en vide du squelette granulaire comblés par le liant et les additifs (VFBad) pour les mélanges contenant des additifs dans leur composition.
Cette méthode peut être utilisée pour les éprouvettes compactées en laboratoire ou prélevées dans la chaussée par carottage ou sciage après mise en œuvre et compactage.
Ces caractéristiques volumétriques peuvent être employées comme critères de formulation ou comme paramètres d’évaluation du mélange après sa mise en œuvre et son compactage dans une chaussée.

Bitumenske zmesi - Preskusne metode - 8. del: Ugotavljanje značilnosti votlin v bitumenskih preskušancih

Ta evropski standard opisuje postopek za izračun volumetričnih značilnosti zgoščenega bitumenskega preskušanca: vsebnost zraka (Vm), vsebnost votlin v zmesi kamnitih zrn z vezivom (VFB) in vsebnost votlin v zmesi kamnitih zrn z vezivom in dodatki (VFBad) za primere zmesi, ki imajo v svoji sestavi dodatke.
Metoda je primerna za preskušance, ki so laboratorijsko stisnjeni, ali preskušance, ki so z vrtanjem ali žaganjem izrezani iz voziščne konstrukcije po vgradnji in utrjevanju.
Te volumetrične značilnosti je mogoče uporabiti kot merila za načrtovanje zmesi ali parametre za ocenjevanje zmesi po vgradnji in utrjevanju na cesti.

General Information

Status
Published
Publication Date
18-Dec-2018
Withdrawal Date
29-Jun-2019
Technical Committee
CEN/TC 227 - Road materials
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
18-Jun-2025
Completion Date
28-Jan-2026

Relations

Effective Date
26-Dec-2018
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
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

EN 12697-8:2018 - Bituminous mixtures: Test methods - Part 8 - provides the standardised procedure for determining volumetric characteristics of compacted bituminous specimens. It covers calculation of the air voids content (Va), the voids in the mineral aggregate filled with binder (VFB), and VFBad (for mixtures containing additives). The method applies to laboratory-compacted specimens and to specimens taken from pavements or laboratory slabs (by coring or sawing). These volumetric measures are used for mix design, quality control and post-construction evaluation.

Key topics and requirements

  • Primary metrics: Va (air voids), VMA (voids in the mineral aggregate), VFB (voids filled with binder), and VFBad (voids filled with binder and additives).
  • Input data: maximum density (ρm), bulk density of specimen (ρb - for mixtures with water, the dry bulk density is used), binder content, additive content and densities.
  • Calculation procedures: formulas are provided for Va, VMA, VFB and VFBad. VFBad explicitly accounts for known additive mass and density when additives are present.
  • Specimen types: suitable for laboratory-compacted specimens, pavement cores or sawed slabs.
  • Precision (Va): repeatability r ≈ 1.1% (by volume); reproducibility R ≈ 2.2% (by volume) for air voids determination, based on EN test series.
  • Reporting requirements: reports must include specimen origin, mixture type and additives, specimen dimensions (to 0.1 mm if measured), methods used, densities (ρm, ρb), binder/additive contents and calculated volumes to 0.1% by volume.

Practical applications and users

  • Who uses it: pavement engineers, materials laboratories, highway authorities, contractors, mix designers and quality assurance teams.
  • Why it’s used:
    • As a mix design criterion to optimise binder content and aggregate grading.
    • For quality control and acceptance to verify compaction and detect problems (over- or under-compaction, excessive porosity).
    • To assess the effect of additives (e.g. polymers, fillers, recycling agents) on volumetric properties.
    • For performance-related evaluation to reduce risks of rutting, moisture damage and premature failure.
  • Mixture types: hot mix asphalt, warm mixes, emulsions or foamed bitumen mixes when appropriate bulk-density adjustments are applied.

Related standards

  • EN 12697-5 - Determination of maximum density (ρm)
  • EN 12697-6 - Determination of bulk density of bituminous specimens
  • EN 12697-7 - Determination of bulk density by gamma rays
  • Part of the broader EN 12697 series (CEN/TC 227) for road materials testing.

This standard ensures consistent, reproducible volumetric assessment of bituminous mixtures, supporting sound mix design, on-site evaluation and long-term pavement performance.

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Frequently Asked Questions

EN 12697-8:2018 is a standard published by the European Committee for Standardization (CEN). Its full title is "Bituminous mixtures - Test methods - Part 8: Determination of void characteristics of bituminous specimens". This standard covers: This document describes a procedure for calculating volumetric characteristics of a compacted bituminous specimen: the air voids content (Va), the voids content in the mineral aggregate filled with binder (VFB) and the voids content in the mineral aggregate filled with binder and additives (VFBad) for the case of mixtures containing additives in their composition. The method is suitable for specimens which are laboratory compacted or specimens cut from the pavement after placement and compacting or from laboratory compacted slabs, either by coring or sawing. These volumetric characteristics can be used as mix design criteria or as parameters for evaluating the mixture after placing and compacting in the road.

This document describes a procedure for calculating volumetric characteristics of a compacted bituminous specimen: the air voids content (Va), the voids content in the mineral aggregate filled with binder (VFB) and the voids content in the mineral aggregate filled with binder and additives (VFBad) for the case of mixtures containing additives in their composition. The method is suitable for specimens which are laboratory compacted or specimens cut from the pavement after placement and compacting or from laboratory compacted slabs, either by coring or sawing. These volumetric characteristics can be used as mix design criteria or as parameters for evaluating the mixture after placing and compacting in the road.

EN 12697-8:2018 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.

EN 12697-8:2018 has the following relationships with other standards: It is inter standard links to EN 12697-8:2003, EN 12697-5:2018, EN 12697-6:2020, EN 12697-7:2022, EN ISO 8560:2019, EN 12697-31:2019, EN 12697-17:2017, EN 13108-1:2016, EN 13108-7:2016, EN 12697-24:2018, EN ISO 128-2:2020, EN 12697-12:2018, EN ISO 128-3:2020, EN 12697-12:2008, EN ISO 6414:2020. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 12697-8:2018 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-marec-2019
1DGRPHãþD
SIST EN 12697-8:2004
QRVWLYRWOLQY%LWXPHQVNH]PHVL3UHVNXVQHPHWRGHGHO8JRWDYOMDQMH]QDþLO
ELWXPHQVNLKSUHVNXãDQFLK
Bituminous mixtures - Test methods - Part 8: Determination of void characteristics of
bituminous specimens
Asphalt - Prüfverfahren - Teil 8: Bestimmung von volumetrischen Charakteristiken von
Asphalt-Probekörpern
Mélanges bitumineux - Méthodes d'essai - Partie 8 : Détermination des pourcentages de
vides caractéristiques des éprouvettes bitumineuses
Ta slovenski standard je istoveten z: EN 12697-8:2018
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 12697-8
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2018
EUROPÄISCHE NORM
ICS 93.080.20 Supersedes EN 12697-8:2003
English Version
Bituminous mixtures - Test methods - Part 8:
Determination of void characteristics of bituminous
specimens
Matériaux enrobés - Méthodes d'essai - Partie 8: Asphalt - Prüfverfahren - Teil 8: Bestimmung von
Détermination de la teneur en vides caractéristiques volumetrischen Charakteristiken von Asphalt-
des matériaux bitumineux Probekörpern
This European Standard was approved by CEN on 9 November 2018.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12697-8:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Determination of the air voids content (V ) . 6
a
4.1 Principle . 6
4.2 Calculation . 6
4.3 Precision . 7
4.4 Test report . 7
5 Determination of the percentage of the voids in the mineral aggregate filled with
binder . 7
5.1 Principle . 7
5.1.1 Mixtures without additives (VFB) . 7
5.1.2 Mixtures with additives (VFB ) . 7
ad
5.2 Calculation . 8
5.2.1 Mixtures without additives. 8
5.2.2 Mixtures with additives . 8
5.3 Precision . 9
5.4 Test report . 9

European foreword
This document (EN 12697-8:2018) 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 2019 and conflicting national standards shall be
withdrawn at the latest by June 2019.
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 12697-8:2003.
The following is a list of significant technical changes since the previous edition:
— The series title no longer makes the method exclusively for hot mix asphalt;
— [General] For clarity, “v/v” and “m/m” is replaced by “by volume” and “by mass”;
— [General] Change of indices in symbols for void content, binder density and binder content;
— [1] clarification that specimens cut from the pavement or from laboratory compacted slabs can be
by either coring or sawing;
— [2] EN 12697-7 added. Also in [4.3];
— [3.3] The term “bituminous material” amended to “bituminous mixture” to be in line with other
parts;
— [3.6] New term and definition of VMA inserted (void including additives in the mineral aggregate).
ad
Following sub-clause renumbered;
— [3.8] New term and definition of VFB inserted (voids filled with binder and additives;
ad
— [4.1] clarification added in for mixtures with water in their composition that the bulk density refers
to its dry bulk density;
— [4.2] Excessive text: “% by volume” deleted in Formula (1);
— [4.2] Key for V : The word “mixture” is replaced with “bituminous specimen” to be in line with
a
definition [3. 2] and [4.1] Principle;
3 3
— [4.2] and [5.2] Change of units from kg/m into Mg/m ;
— [4.3] Formula (2) including related text deleted for consistency with other parts. Following
formulas renumbered accordingly;
— [5.1] Principle for mixtures without additives now described in new sub-clause [5.1.1]. New sub-
clause added for mixtures with additives [5.1.2];
— [5.2] Calculation for mixtures without additives now described in new sub-clause [5.2.1]. New sub-
clause added for calculation of mixtures with additives [5.2.2];
— [5.2.2] Excessive text: “%” deleted in Formula (4);
— [5.4] dimension of specimen to the nearest 0,1 mm (if measured) added to results.
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 organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav
...

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