National foreword

This British Standard is the UK implementation of EN 12697‑3:2013+A1:2018. It supersedes BS EN 12697‑3:2013, which is withdrawn.

The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by .

The UK participation in its preparation was entrusted to Technical Committee B/510/1, Asphalt products.

A list of organizations represented on this committee can be obtained on request to its committee manager.

It is the opinion of the UK committee that some types of apparatus used for this test may be at risk of damage due to a proportion of vapour entering the vacuum pump, which – with continued exposure to the solvent – could cause the pump to seize up. Additionally, the UK committee believes there is a risk that condensed solvent could be ejected from the exhaust line when the pressure is being released. The UK committee therefore recommends the use of a solvent trap, such as a Woulfe bottle, to prevent solvent from entering the pump.

Contractual and legal considerations

This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by BSI in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law.

This publication is provided as is, and is to be used at the recipient’s own risk.

The recipient is advised to consider seeking professional guidance with respect to its use of this publication.

This publication is not intended to constitute a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2013.

This European Standard was approved by CEN on 28 March 2013 and includes Amendment 1 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.

Foreword

This document (EN 12697‑3:2013+A1:2018) 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 includes Amendment 1 approved by CEN on 9 November 2018.

The start and finish of text introduced or altered by amendment is indicated in the text by tags .

This document supersedes EN 12697‑3:2013.

The significant changes made in EN 12697‑3:2013+A1:2018 compared to EN 12697‑3:2013 are:

[Title] The series title no longer makes the method exclusively for hot mix asphalt;
[Foreword] The list of standards in the Foreword was deleted and the list of significant changes was adapted;
[5.1] NOTE: Paragraph deleted, stating that the hardening is usually approximately equivalent to the softening resulting from any solvent residue;
[5.3.6] The temperature range 100 °C to 200 °C for thermometer is replaced by range of temperatures specified in Table 1 according to the solvent used;
[7.1.2] Clarification that the 0,063 mm sieve is used for removal of any insoluble material;
[7.3] The whole sub-clause has been replaced, with the following significant changes:
- the order of the procedure in the previous version (7.3.8 to 7.3.25) has been altered for clarity and is now described in 7.3.8 to 7.3.18;
- NOTES introduced in 7.3.9 and 7.3.11 with advise to not exceed 120 °C for T₂ for bitumen’s, designated and specified by kinematic viscosity at 60 °C regardless of solvent used;
[Clause 9] Reference to (7.1.15) amended to (7.3.13) followed by the changes in 7.3.
editorial updates.

A list of all parts in the EN 12697 series can be found on the CEN website.

WARNING — The method described in this European Standard may require the use of dichloromethane (methylene chloride), 1,1,1-Trichlorethane, benzene, trichlorethylene, xylene, toluene, tetrachloroethylene or other solvent capable of dissolving bitumen. These solvents are hazardous to health and are subject to occupational exposure limits as detailed in relevant legislation and regulations.

Exposure levels are related to both handling procedures and ventilation provision and it is important that adequate training be given to staff employed in the usage of these substances.

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, 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 the United Kingdom.

1 Scope

This document describes a test method for the recovery of soluble bitumen from bituminous mixtures used in road, airfield or similar pavements in a form suitable for further testing. The test can be undertaken on either loose or compacted asphalt materials. The procedure is suitable for the recovery of paving grade bitumens, for which materials this European Standard is the reference method. The fractionating column procedure (see EN 12697‑4) is the reference method for mixtures containing volatile matter such as cut-back bitumen.

For recovery of polymer modified bitumens, the rotary evaporator procedure is recommended.

2 Normative references

3 Terms and definitions

4 Principle

5 Apparatus

5.1 Apparatus for the extraction of the soluble bitumen

5.2 Apparatus for the clarification of the bitumen solution

5.3 Distillation apparatus

6 Solvent and other materials

6.1 Dichloromethane (methylene chloride) or other suitable solvent

6.2

6.3

7 Procedure

7.1 Extraction of the bitumen and removal of insoluble matter

7.2 Assembling the apparatus

7.3 Distillation procedure

8 Preparation of the bitumen for testing

9 Test report

10 Precision

10.1

10.2

Bibliography

BS EN 12697-3:2013+A1:2018

Bituminous mixtures. Test methods - Bitumen recovery. Rotary evaporator

Current

Published:

31 Dec 2021