kSIST FprEN 12697-10:2026

• Abstract:

  This document describes three test methods for characterizing the compactability of a bituminous mixture, by the relation between its density or void content and the compaction energy applied to it, using an impact (Marshall) compactor, gyratory compactor, or a vibratory compactor.; This document applies to bituminous mixtures, both those prepared in laboratory and those resulting sampled from plant produced mixtures. The results of the test method serve to supplement the results of mixture design.

• Status: Not Published
• Public Enquiry End Date: 27-Mar-2025
• ICS: 93.080.20 - Road construction materials
• Technical Committee: CES - Roads
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 03-Nov-2026
• Due Date: 22-Dec-2026
• Ref Project: FprEN 12697-10 - Bituminous mixtures - Test methods - Part 10: Compactability

• Referred By: SIST EN ISO/ASTM 52904:2025 - Additive manufacturing of metals - Process characteristics and performance - Metal powder bed fusion process to meet critical applications (ISO/ASTM 52904:2024)
• Effective Date: 28-Jan-2026
• Referred By: SIST-TS CEN ISO/ASTM TS 52949:2025 - Additive manufacturing of metals - Qualification principles - Installation, operation and performance (IQ/OQ/PQ) of PBF-EB equipment (ISO/ASTM TS 52949:2025)
• Effective Date: 28-Jan-2026
• Referred By: SIST EN ISO/ASTM 52908:2024 - Additive manufacturing of metals - Finished Part properties - Post-processing, inspection and testing of parts produced by powder bed fusion (ISO/ASTM 52908:2023)
• Effective Date: 28-Jan-2026
• Referred By: SIST EN ISO/ASTM 52935:2024 - Additive manufacturing of metals - Qualification principles - Qualification of coordination personnel (ISO/ASTM 52935:2023)
• Effective Date: 28-Jan-2026
• Revises: SIST EN 12697-10:2018 - Bituminous mixtures - Test methods - Part 10: Compactability
• Effective Date: 21-Feb-2024

kSIST FprEN 12697-10:2026 is a SIST draft standard for bituminous mixtures. It specifies three test methods for measuring compactability by relating density or void content to the compaction energy applied, using an impact (Marshall) compactor, a gyratory compactor, or a vibratory compactor. The document is used for laboratory-made mixtures and for samples taken from plant-produced mixtures, and its results supplement mixture design.

What does kSIST FprEN 12697-10:2026 specify?

kSIST FprEN 12697-10:2026 specifies how to assess the compactability of bituminous mixtures and how to report the result. The document is organized into scope, normative references, terms and definitions, principle, apparatus, test procedure, calculation and expression of results, test report, and precision.

The scope covers mixtures prepared in the laboratory and mixtures sampled from production. The document is about comparing how a mix responds to compaction, not about replacing mixture design.

Clause 4 sets out the two monitoring approaches used in the tests:

• several specimens at different compaction energies with density measurement
• one specimen with thickness measured during compaction

Table 1 links those approaches to the impact, gyratory, and vibratory methods. That matters in practice because the procedure changes with the compactor you use and with the way you track the response.

What are the key requirements of kSIST FprEN 12697-10:2026?

kSIST FprEN 12697-10:2026 focuses on how to compact the specimen, what to measure, and how to turn the measurements into compactability values.

Compaction methods and equipment

Clause 5 requires the compaction equipment and measuring devices to match the companion parts of the EN 12697 series. The impact method uses a Marshall compactor and thickness measuring devices with tight error limits; the gyratory and vibratory methods use their specified compactors. In practice, the measuring accuracy affects the final calculated parameters.

Impact compaction procedure

Clause 6.1.1 uses different specimens at compaction energies of 5, 15, 25, 35, 50 and 100 blows to each side, with bulk density determined afterwards. This gives a density-versus-energy curve that shows how resistant the mix is to compaction.

Clause 6.1.2 uses one specimen compacted with 100 blows to each side, while thickness is recorded during compaction and checked again after cooling. Four final thickness measurements around the perimeter are averaged. This is useful when you want a single specimen to represent the whole compaction sequence.

Gyratory and vibratory procedures

Clause 6.2 requires at least 200 gyrations and at least three specimens per mixture, with the mean density used for calculation. Maximum density is determined separately and void content is calculated from it. That means the result is based on a set of specimens, not on one value alone.

Clause 6.3 uses duplicate specimens at 10, 15, 20, 30, 60 and 120 seconds per side. If no density increase occurs after 60 seconds, the time is limited to 60 seconds but the number of conditions stays the same. Bulk density is measured twice for each condition and averaged, and void content is calculated from maximum density.

Calculation, reporting, and precision

Clause 7 expresses compactability with fitted equations. For impact compaction, the document gives separate models for density-based and thickness-based evaluation, producing compaction resistance values C and T. For gyratory and vibratory compaction, compactability is expressed as K and k from logarithmic relationships.

Clause 8 requires the test report to identify the document, the mixing and compaction method, the compaction temperature, the main compaction settings for gyratory tests, the compactability parameters, the graph of results, deviations, and unusual observations. Clause 9 gives repeatability and reproducibility information for impact and gyratory methods, while the vibratory precision is still tentative.

What terms does kSIST FprEN 12697-10:2026 define?

• Compactability - the ability of an asphalt mixture to be compacted; the document uses K for gyratory compaction and k for vibratory compaction.
• Compaction resistance - the resistance of an asphalt mixture to being compacted; the document uses C for impact compaction with several specimens and T for impact compaction on one specimen.
• Impact compaction - compaction by a Marshall compactor using blows on the specimen.
• Gyratory compaction - compaction by a gyratory compactor using repeated gyrations.
• Vibratory compaction - compaction by a vibratory compactor using vibration time as the compaction measure.

Who uses kSIST FprEN 12697-10:2026?

kSIST FprEN 12697-10:2026 is used by asphalt laboratories, road materials test houses, and production quality teams. It is relevant to engineers and quality managers who need to compare mixtures, confirm how a mix responds to compaction, and record results in a form that can be used in mixture design work.

It also matters to plant operators and buyers who need test results from production samples. The document helps them compare different mix recipes or production batches using a common method.

What changed in kSIST FprEN 12697-10:2026 from the previous edition?

kSIST FprEN 12697-10:2026 will supersede EN 12697-10:2017. The foreword lists these changes:

• deletion of the paragraph on applicability in product standards for bituminous materials
• correction of the test method titles by removing “for hot mix asphalt”
• amended wording for the thickness measuring device in 5.1.2
• amended wording for the slide calliper rule in 5.1.3
• clarification of the second paragraph in 6.1.2
• amended information to be included in the test report in Clause 8

Which standards are used with kSIST FprEN 12697-10:2026?

kSIST FprEN 12697-10:2026 refers to these standards:

• EN 12697-5 - maximum density of bituminous mixtures, used to calculate void content
• EN 12697-6 - bulk density of bituminous specimens, used for density measurements in the test methods
• EN 12697-8 - void characteristics of bituminous specimens, used to determine void content
• EN 12697-30 - specimen preparation by impact compactor, used for the impact method
• EN 12697-31 - specimen preparation by gyratory compactor, used for the gyratory method
• EN 12697-32 - laboratory compaction by vibratory compactor, used for the vibratory method

What does the kSIST FprEN 12697-10:2026 document contain?

kSIST FprEN 12697-10:2026 contains three test procedures, regression equations, example plots, and precision data. Table 1 links each compaction method to the correct procedure clause, Table 2 gives allowable variation for impact compaction resistance, and Tables 3 and 4 give repeatability and reproducibility information.

Figures 1 and 2 show example fits for the impact methods. The document also provides the calculation route from measured density, thickness, or void content to the compactability parameters, which is what laboratories need when they want repeatable comparison data rather than raw test readings.

SLOVENSKI STANDARD
oSIST prEN 12697-10:2025
01-marec-2025
Bitumenske zmesi - Preskusne metode - 10. del: Zgostljivost
Bituminous mixtures - Test methods - Part 10: Compactability
Asphalt - Prüfverfahren - Teil 10: Verdichtbarkeit
Mélanges bitumineux - Méthodes d'essai - Partie 10 : Compactabilité
Ta slovenski standard je istoveten z: prEN 12697-10
ICS:
93.080.20 Materiali za gradnjo cest Road construction materials
oSIST prEN 12697-10:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 12697-10:2025
oSIST prEN 12697-10:2025
DRAFT
EUROPEAN STANDARD
prEN 12697-10
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2025
ICS 93.080.20 Will supersede EN 12697-10:2017
English Version
Bituminous mixtures - Test methods - Part 10:
Compactability
Mélanges bitumineux - Méthodes d'essai - Partie 10 : Asphalt - Prüfverfahren - Teil 10: Verdichtbarkeit
Compactabilité
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 227.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12697-10:2025 E
worldwide for CEN national Members.

oSIST prEN 12697-10:2025
prEN 12697-10:2024 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 5
5 Apparatus . 6
5.1 Impact compaction . 6
5.2 Gyratory compaction . 6
6 Test procedure . 6
6.1 Impact compaction . 6
6.1.1 Different specimens for each level of compaction energy, recording increases in
density . 6
6.1.2 One specimen for all levels of compaction energy, recording decreases in thickness 6
6.2 Gyratory compaction . 6
6.3 Vibratory compaction . 7
7 Calculation and expression of results . 7
7.1 Impact compaction . 7
7.1.1 Different specimens for each level of compaction energy, recording increases in
density . 7
7.1.2 Same specimen for all levels of compaction energy, recording decreases in thickness
..................................................................................................................................................................... 9
7.2 Gyratory compaction . 10
7.3 Vibratory compaction . 11
8 Test report . 11
9 Precision . 11
9.1 Impact compaction . 11
9.1.1 General. 11
9.1.2 One specimen for all levels of compaction energy, recording decreases in thickness
................................................................................................................................................................... 12
9.2 Gyratory compaction . 12
9.3 Vibratory compaction . 12

oSIST prEN 12697-10:2025
prEN 12697-10:2024 (E)
European foreword
This document (prEN 12697-10:2024) has been prepared by Technical Committee CEN/TC 227 “Road
materials”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12697-10:2017.
prEN 12697-10:2024 includes the following significant technical changes with respect to
EN 12697-10:2017:
— [European Foreword] deletion of paragraph: “The applicability of this European Standard is
described in the product standards for bituminous materials.”;
— [Clause 2] the titles for test methods corrected by deletion of “for hot mix asphalt”;
— [5.1.2] amended to read: “mm with a maximum permissible error of 0,1 mm.”
— [5.1.3] amended to read: “Slide calliper rule, capable to measure the thickness of the specimen to
the nearest 0,1 mm with a maximum permissible error of 0,2 mm.”
— [6.1.2] 2nd paragraph clarified;
— [Clause 8] information to be included in the test report amended.
A list of all parts in the EN 12697 series can be found on the CEN website: www.cencenelec.eu
oSIST prEN 12697-10:2025
prEN 12697-10:2024 (E)
1 Scope
This document describes three test methods for characterizing the compactability of a bituminous mix,
by the relation between its density or void content and the compaction energy applied to it, using an
impact (Marshall) compactor, gyratory compactor, or a vibratory compactor.
This document applies to bituminous mixtures, both those prepared in laboratory and those resulting
sampled from plant produced mixtures. The results of the test method serve to supplement the results of
mixture design.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 12697-5, Bituminous mixtures — Test methods— Part 5: Determination of the maximum density
EN 12697-6, Bituminous mixtures — Test methods— Part 6: Determination of bulk density of bituminous
specimens
EN 12697-8, Bituminous mixtures — Test methods— Part 8: Determination of void characteristics of
bituminous specimens
EN 12697-30, Bituminous mixtures — Test methods— Part 30: Specimen preparation by impact compactor
EN 12697-31, Bituminous mixtures — Test methods— Part 31: Specimen preparation by gyratory
compactor
EN 12697-32, Bituminous mixtures — Test methods— Part 32: Laboratory compaction of bituminous
mixtures by vibratory compactor
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
compactability
K, k
ability of an asphalt mixture to be compacted (K when evaluated by gyratory compaction and k when
evaluated by vibratory compaction)
Note 1 to entry: High values of K and k will indicate a mixture for which less compaction energy is required to
obtain a given void content decrease.
oSIST prEN 12697-10:2025
prEN 12697-10:2024 (E)
3.2
compaction resistance
C, T
resistance of an asphalt mixture to being compacted (C when evaluated by impact compaction of several
specimens with varied compaction energy and T when evaluated by impact compaction of one specimen
while measuring its thickness)
Note 1 to entry: High values of C and T will indicate a mixture for which high compaction energy is required to
obtain a given void content decrease.
4 Principle
The bituminous mixture is compacted at a prescribed temperature with varying compaction energies
using one of three optional types of compaction methods:
a) impact compaction
b) gyratory compaction
c) vibratory compaction.
Two methods of monitoring the compactability can be applied:
— Method 1: two or more specimen are compacted with different amounts of compaction energy and
their densities are measured.
— Method 2: one specimen is used and its increase in density during the compaction process is
determined from its decrease in thickness.
The following Table 1 defines the compaction type to use depending of the compactness of tracking
method and gives the clause of test procedure.
Table 1 — Compaction type
Procedure clause according to
compaction method
impact gyratory vibratory
Compaction of specimens with carried compaction energy 6.1.1 n. a. 6.3
Measurement of specimen thickness during compaction 6.1.2 6.2 n. a.
A graph is drawn of density (or voids content) against compaction energy. When the impact compaction
is used, the compaction energy is characterized by the number of blows, when the gyratory compaction
is used, by the number of gyrations and when the vibratory compactor is used, by the duration in seconds.
A mathematical formula is derived from the experimental results, the parameters of which formula
characterize the compactability of the bituminous mixture.
oSIST prEN 12697-10:2025
prEN 12697-10:2024 (E)
5 Apparatus
5.1 Impact compaction
5.1.1 Marshall compactor shall be in accordance with EN 12697-30.
5.1.2 Measuring device for automatically recording the thickness of the specimen after each blow of
compaction with a maximum permissible error of 0,1 mm.
5.1.3 Slide calliper rule with a maximum permissible error of 0,1 mm.
5.2 Gyratory compaction
5.2.1 Gyratory compactor shall be in accordance with EN 12697-31.
5.3.1 Vibratory compactor shall be in accordance with EN 12697-32.
6 Test procedure
6.1 Impact compaction
6.1.1 Different specimens for each level of compaction energy, recording increases i
...