European foreword

This document (EN 12595:2023) has been prepared by Technical Committee CEN/TC 336 “Bituminous binders”, the secretariat of which is held by AFNOR.

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of an identical text or by endorsement, at the latest by January 2024, and conflicting national standards shall be withdrawn at the latest by January 2024.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 12595:2014.

In comparison with the previous edition, the main technical changes are:

— deletion of note in scope and new note added to scope regarding assumption of Newtonian behaviour under test conditions;
— removal of dated reference in normative references (ISO 2592);
— formula for the relationship between dynamic and kinematic viscosity added in 3.1;
— “accuracy” changed to “maximum permissible error” in several Clauses (5.2, 5.4, 5.5 and 5.6);
— references to mercury thermometers and total immersion thermometer in 5.2 deleted;
— new sub-Clause 5.7 added on Calibration/Verification;
— additional information on use of viscometers and references to figures added in 7.1;
— mandatory use of two BS/IP/RF viscometers for one determination of kinematic viscosity;
— precision on time for thermal equilibrium and removal of note in 7.2;
— information on validity of individual test data to calculate mean value added in Clause 8; including a new Note 1 and renumbering existing note to Note 2;
— key added to Figures A.1, A.2 and A.3 and correct diameter of bulb in key of Figure A.1;
— Figures A.2 and A.3 revised;
— Table B.1 updated with informative values for viscosity standards;
— Annex C deleted;
— new Annex C introduced with examples on calculation;
— ASTM E77‑98 deleted from Bibliography;
— reference to ASTM D2170‑01 in Bibliography has been updated and reference (footnote) to Institute of Petroleum deleted.

Any feedback and questions on this document should be directed to the users’ national standards body. A complete listing of these bodies can be found on the CEN website.

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, 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 the United Kingdom

BS EN 12595:2023

Bitumen and bituminous binders. Determination of kinematic viscosity

Current

Published:

31 Jul 2023