European foreword

This document (EN 12846‑1:2022) 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of an identical text or by endorsement, at the latest by June 2023, and conflicting national standards shall be withdrawn at the latest by June 2023.

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 12846‑1:2011.

EN 12846‑1:2022 includes the following significant technical changes with respect to EN 12846‑1:2011:

— possibility to use a vegetal oil, requirement on density replaces requirement on viscosity (Clause 5);
— the use of Sa and Sc solutions has been abandoned;
— Figures 1 and 2 have been modified to be in line with the evolution of test equipment (6.1 and 6.2);
— possibility to use alternative working apparatus that meet the requirements of this document, such as for example an integrated block viscometer (6.1);
— mercury stem thermometers are no longer specified as reference thermometers (6.4) and Annex A has been removed;
— emulsion samples, viscometer cups, valves and lids are preconditioned at test temperature to minimize time of presence of the emulsion sample in the viscometer cup (8.3.3 and 8.3.4);
— more accurate description of measurement procedure (8.3);
— introduction in 8.3.9 of the possible use of a balance (alternative method) instead of a receiver (reference method);
— precision data have been re-evaluated based on more comprehensive operational experience (Clause 10).

The EN 12846 series consists of the following parts under the general title Bitumen and bituminous binders — Determination of efflux time by the efflux viscometer:

— Part 1: Bituminous emulsions;
— Part 2: Cut-back and fluxed bituminous binders.

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 12846-1:2022

Bitumen and bituminous binders. Determination of efflux time by the efflux viscometer - Bituminous emulsions

Current

Published:

31 Oct 2023