kSIST FprEN 12697-18:2026
(Main)Bituminous mixtures - Test methods - Part 18: Binder drainage
- Abstract
This document describes two test methods:
- basket method (see Clause 4);
- beaker method (see Clause 5).
The basket method describes a method for determining binder drainage of bituminous mixtures. This method directly measures binder drainage, but when carried out on bituminous mixtures with fibres or mixtures whose mortar content is higher than in porous asphalt some clogging of the holes in the drainage baskets can occur, limiting the drainage of the binder. The basket method can be used either for determining the binder drainage for different binder content, or with a single binder content, eliminating the successive repetitions. It also enables the effects of varying fine aggregate types or including any anti-draining additive to be quantified.
The beaker method describes a method for determining binder drainage of bituminous mixtures. It is applicable to asphalt materials that are not porous asphalt or for porous asphalt incorporating fibres. It can be used either for determining the binder drainage for different binder content, or with a single binder content, eliminating the successive repetitions. It also enables the effects of varying fine aggregate types or including any anti-draining additive to be quantified.
- Status
- Not Published
- Public Enquiry End Date
- 27-Mar-2025
- Technical Committee
- CES - Roads
- Current Stage
- 5020 - Formal vote (FV) (Adopted Project)
- Start Date
- 03-Nov-2026
- Due Date
- 22-Dec-2026
kSIST FprEN 12697-18:2026 is a draft European standard for bituminous mixtures, prepared in CEN/TC 227 and published by SIST. It specifies two test methods for binder drainage in asphalt materials: the basket method and the beaker method. Laboratories, road-material producers, and factory production control teams use it to compare mixtures by binder content, fine aggregate type, or anti-draining additive.
What does kSIST FprEN 12697-18:2026 specify?
kSIST FprEN 12697-18:2026 covers the determination of binder drainage in bituminous mixtures and is organized into a short main text plus two method clauses. Clause 4 gives the basket method and Clause 5 gives the beaker method, each with principle, materials, apparatus, procedure, calculation, test report, and precision.
The basket method is meant for direct measurement of binder drainage, including cases where different binder contents are tested or where a single binder content is checked without repeated preparation. The beaker method serves the same overall purpose, but it is aimed at asphalt materials that are not porous asphalt, or at porous asphalt incorporating fibres.
The document also points to the relevant sampling, mixing, binder, and sieve standards used alongside the test.
What are the key requirements of kSIST FprEN 12697-18:2026?
Basket method
kSIST FprEN 12697-18:2026 requires a heated, vibration-free oven, drainage baskets made from 3.15 mm perforated plate, and weighing and temperature equipment with defined accuracy. In practice, this means the test depends on controlled heating and a basket geometry that allows drained binder to collect and be weighed.
The basket method uses enough material to prepare at least 4 kg of asphalt material, with 2.5 kg more for each additional binder content. Aggregates must be dried to constant mass and graded to the specified fractions, so the test starts from a controlled mixture rather than a loose field sample.
Clause 4.4 sets the test temperature from the mixture type: paving grade bitumen uses the EN 12697-35 reference compaction temperature plus 25 °C, while modified bitumen to EN 14023, or other additives, use the supplier’s installation temperature plus 15 °C. If a different temperature is used for a specific mixture, the report must state it.
The method uses duplicate samples at each binder content, and if the difference in drained material for a pair exceeds 0.5 %, the test is repeated. Clause 4.5 also requires the average of at least two results, rounded to 0.1 %, and plots mean drainage against binder content when several binder contents are tested.
Beaker method
kSIST FprEN 12697-18:2026 requires a similar oven control, but uses 800 ml glass beakers and a 1 mm sieve for cases where the retained material includes mortar or aggregate particles. The beaker method is therefore better suited to checking what remains after a controlled overturning step, not just what drains freely.
Clause 5.4 sets the test temperature in the same general way, but it must not be higher than the reference compaction temperature plus 25 °C for paving grade bitumen. The test also uses three batches of 1 kg aggregate per binder content, and each beaker must be weighed before and after heating.
After 60 minutes in the oven, the beaker is turned over for 10 seconds and weighed again. If the retained material is not just binder, it is washed over the 1 mm sieve and the residue is weighed separately. Clause 5.5 then calculates drained material, and where relevant the sieve residue, from the measured masses.
Reporting and precision
Both methods require reporting the sample identification, method used, target temperature, deviations, unusual features, date, and the drainage result. The beaker method also requires the mixture temperature after 60 minutes in the oven. Official precision has not yet been established for either method, but both clauses include estimated repeatability and reproducibility values.
What terms does kSIST FprEN 12697-18:2026 define?
- Binder drainage - the separation of binder, fine particles, and any additives from the mixture after mixing or during transport.
- Basket method - the method in Clause 4 that measures drained material collected on a perforated basket after 3 hours.
- Beaker method - the method in Clause 5 that measures drainage from a beaker after 1 hour at temperature.
- BD - the drained material result, expressed as a percentage of the original mixture mass.
- R - the residue on the 1 mm sieve, expressed as a percentage when the beaker method leaves solid residue.
Who uses kSIST FprEN 12697-18:2026?
kSIST FprEN 12697-18:2026 is used by asphalt laboratories, road-material producers, and factory production control staff. It is also relevant to technicians comparing binder contents, fibre additions, fine aggregate types, or anti-draining additives. In practice, it supports mix development, routine production checks, and troubleshooting when binder loss is a concern.
What changed in kSIST FprEN 12697-18:2026 from the previous edition?
kSIST FprEN 12697-18:2026 is intended to supersede EN 12697-18:2017. The draft updates the weighing and temperature wording in both methods, revises the contents of both test reports, and removes notes in Clause 4.5 and Clause 5.5.1. It also aligns the report item lists with current CEN/CENELEC editorial rules.
Which standards are used with kSIST FprEN 12697-18:2026?
- EN 12697-27 - gives the sampling method when samples are taken from factory production control.
- EN 12697-35 - provides the laboratory mixing reference used to set the test temperature and prepare mixtures.
- EN 14023 - defines polymer modified bitumens used when the test temperature is based on supplier installation temperature.
- ISO 3310-1 - specifies the 1 mm test sieve used in the beaker method.
- ISO 3310-2 - specifies the perforated metal plates used to build the drainage baskets.
What does the kSIST FprEN 12697-18:2026 document contain?
The document contains two full test methods, each with principle, materials, apparatus, procedure, calculation, reporting, and precision. It includes the basket geometry in Figure 1, formulas for drainage calculation, and detailed step-by-step procedures for duplicate testing and binder-content series. It also identifies when a residue on a 1 mm sieve must be measured and when a result should be repeated.
Relations
- Effective Date
- 21-Feb-2024
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Frequently Asked Questions
kSIST FprEN 12697-18:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Bituminous mixtures - Test methods - Part 18: Binder drainage". This standard covers: This document describes two test methods: - basket method (see Clause 4); - beaker method (see Clause 5). The basket method describes a method for determining binder drainage of bituminous mixtures. This method directly measures binder drainage, but when carried out on bituminous mixtures with fibres or mixtures whose mortar content is higher than in porous asphalt some clogging of the holes in the drainage baskets can occur, limiting the drainage of the binder. The basket method can be used either for determining the binder drainage for different binder content, or with a single binder content, eliminating the successive repetitions. It also enables the effects of varying fine aggregate types or including any anti-draining additive to be quantified. The beaker method describes a method for determining binder drainage of bituminous mixtures. It is applicable to asphalt materials that are not porous asphalt or for porous asphalt incorporating fibres. It can be used either for determining the binder drainage for different binder content, or with a single binder content, eliminating the successive repetitions. It also enables the effects of varying fine aggregate types or including any anti-draining additive to be quantified.
This document describes two test methods: - basket method (see Clause 4); - beaker method (see Clause 5). The basket method describes a method for determining binder drainage of bituminous mixtures. This method directly measures binder drainage, but when carried out on bituminous mixtures with fibres or mixtures whose mortar content is higher than in porous asphalt some clogging of the holes in the drainage baskets can occur, limiting the drainage of the binder. The basket method can be used either for determining the binder drainage for different binder content, or with a single binder content, eliminating the successive repetitions. It also enables the effects of varying fine aggregate types or including any anti-draining additive to be quantified. The beaker method describes a method for determining binder drainage of bituminous mixtures. It is applicable to asphalt materials that are not porous asphalt or for porous asphalt incorporating fibres. It can be used either for determining the binder drainage for different binder content, or with a single binder content, eliminating the successive repetitions. It also enables the effects of varying fine aggregate types or including any anti-draining additive to be quantified.
kSIST FprEN 12697-18:2026 is classified under the following ICS (International Classification for Standards) categories: 91.100.50 - Binders. Sealing materials; 93.080.20 - Road construction materials. The ICS classification helps identify the subject area and facilitates finding related standards.
kSIST FprEN 12697-18:2026 has the following relationships with other standards: It is inter standard links to SIST EN 12697-18:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
kSIST FprEN 12697-18:2026 is associated with the following European legislation: EU Directives/Regulations: 305/2011; Standardization Mandates: M/124. 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.
kSIST FprEN 12697-18:2026 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
oSIST prEN 12697-18:2025
01-marec-2025
Bitumenske zmesi - Preskusne metode - 18. del: Odtekanje veziva
Bituminous mixtures - Test methods - Part 18: Binder drainage
Asphalt - Prüfverfahren - Teil 18: Bestimmung des Ablaufens
Mélanges bitumineux - Méthodes d'essai - Partie 18 : Egouttage du liant
Ta slovenski standard je istoveten z: prEN 12697-18
ICS:
91.100.50 Veziva. Tesnilni materiali Binders. Sealing materials
93.080.20 Materiali za gradnjo cest Road construction materials
oSIST prEN 12697-18:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN 12697-18:2025
oSIST prEN 12697-18:2025
DRAFT
EUROPEAN STANDARD
prEN 12697-18
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2025
ICS 93.080.20 Will supersede EN 12697-18:2017
English Version
Bituminous mixtures - Test methods - Part 18: Binder
drainage
Mélanges bitumineux - Méthodes d'essai - Partie 18 : Asphalt - Prüfverfahren - Teil 18: Bestimmung des
Egouttage du liant Ablaufens
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 12697-18:2025 E
worldwide for CEN national Members.
oSIST prEN 12697-18:2025
prEN 12697-18:2025 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Basket method . 5
4.1 Principle . 5
4.2 Materials . 5
4.3 Apparatus . 5
4.4 Procedure. 6
4.5 Calculation and expression of results . 7
4.6 Test report . 8
4.7 Precision . 8
5 Beaker method . 8
5.1 Principle . 8
5.2 Materials . 8
5.3 Apparatus . 8
5.4 Procedure. 9
5.5 Calculation and expression of results . 10
5.6 Test report . 10
5.7 Precision . 11
oSIST prEN 12697-18:2025
prEN 12697-18:2025 (E)
European foreword
This document (prEN 12697-18:2025) 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 12697-18:2017.
prEN 12697-18:2024 includes the following significant technical changes with respect to EN 12697-
18:2017:
— [4.3.3] the wording “accuracy able to weigh to 0,1 g” amended to read “able to weigh to the nearest
0,1 g with a maximum permissible error of 0,2 g”;
— [4.3.4] the wording “able to measure the temperature to 1 °C” amended to read “able to measure
the temperature to the nearest 1 °C with a maximum permissible error of 2 °C;
— [4.5.1] NOTE 2 deleted. NOTE 1 amended to NOTE;
— [4.6] list of items in the test report has been revised in accordance with CEN/CENELEC Internal
Regulations, Part 3:2022;
— [5.3.3] the wording “accuracy able to weigh to 0,1 g” amended to read “able to weigh to the nearest
0,1 g with a maximum permissible error of 0,2 g”;
— [5.3.5] the wording “able to measure the temperature to 1 °C” amended to read “able to measure
the temperature to the nearest 1 °C with a maximum permissible error of 2 °C;
— [5.5.1] NOTE deleted;
— [5.6] list of items in the test report has been revised in accordance with CEN/CENELEC Internal
Regulations, Part 3:2022.
A list of all parts in the EN 12697 series can be found on the CEN website: www.cencenelec.eu.
oSIST prEN 12697-18:2025
prEN 12697-18:2025 (E)
1 Scope
This document describes two test methods:
— basket method (see Clause 4);
— beaker method (see Clause 5).
The basket method describes a method for determining binder drainage of bituminous mixtures. This
method directly measures binder drainage, but when carried out on bituminous mixtures with fibres or
mixtures whose mortar content is higher than in porous asphalt some clogging of the holes in the
drainage baskets can occur, limiting the drainage of the binder. The basket method can be used either
for determining the binder drainage for different binder content, or with a single binder content,
eliminating the successive repetitions. It also enables the effects of varying fine aggregate types or
including any anti-draining additive to be quantified.
The beaker method describes a method for determining binder drainage of bituminous mixtures. It is
applicable to asphalt materials that are not porous asphalt or for porous asphalt incorporating fibres. It
can be used either for determining the binder drainage for different binder content, or with a single
binder content, eliminating the successive repetitions. It also enables the effects of varying fine
aggregate types or including any anti-draining additive to be quantified.
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 12697-27, Bituminous mixtures — Test methods — Part 27: Sampling
EN 12697-35, Bituminous mixtures — Test methods — Part 35: Laboratory mixing
EN 14023, Bitumen and bituminous binders — Specification framework for polymer modified bitumens
ISO 3310-1, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth
ISO 3310-2, Test sieves — Technical requirements and testing — Part 2: Test sieves of perforated metal
plate
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
binder drainage
binder, fine particles and additives, if any, separated from the mixture after the mixing process or
during transport of the mixture to the site
oSIST prEN 12697-18:2025
prEN 12697-18:2025 (E)
4 Basket method
4.1 Principle
The quantity of material lost by drainage, after 3 h at the test temperature (see 4.4.1) is measured in
mixtures placed on baskets made out of perforated metal plates.
4.2 Materials
Sufficient aggregates and binder shall be prepared to manufacture at least 4 kg of asphalt material. If
more than one binder content is going to be tested, aggregates and binder to manufacture 2,5 kg of
asphalt material per each additional binder content shall be provided. The aggregates shall be dried to
constant mass and graded in the fractions appropriate to the specified grading.
The test can be carried out with samples taken during the factory production control. In that case,
sampling shall be in accordance with EN 12697-27.
4.3 Apparatus
4.3.1 Oven with closed ventilation system, vibration free, fitted with thermostatic control to
maintain the temperature in the vicinity of the samples to ±2 °C in the range of 80 °C to 200 °C.
4.3.2 Drainage baskets, constructed from 3,15 mm perforated plate sieves, in accordance with
ISO 3310-2, on sides and base to form (100 ± 2) mm cubes, with feet, at each corner of the base, of
approximately 3 mm diameter and approximately 5 mm height (see Figure 1).
...