DIN EN 13074-2:2011-05

This document (EN 13074-2:2011) has been prepared by Technical Committee CEN/TC 336 "Bituminous binders", the secretariat of which is held by AFNOR (France). The responsible German committee is Working Committee NA 062-03-32 GA "Bitumen; Prüfverfahren und Anforderungen für die Bindemittel" ("Bitumen; test methods and specifications of binders") of the Materials Testing Standards Committee (NMP) and of the Building and Civil Engineering Standards Committee (NABau). EN 13074-2 has been created as the result of the merging of EN 13074:2002 and EN 14895:2006 under a single EN 13074 reference (two different parts), since both standards describe similar procedures which are generally performed consecutively. These two different parts have been made as consistent as possible and the procedures for removing, storing and preparing the binder samples for further testing have been clarified and specified more accurately. This European Standard specifies a method for the stabilisation at 85 °C for 24 h of a binder after recovery from a bituminous emulsion or from a cut-back or fluxed bitumen for further testing. It applies to all types of bituminous emulsions, modified with polymers or non-modified, and as well to all types of cut-back and fluxed bitumens, both modified with polymers and non-modified. The recovery test method is specified in EN 13074-1. WARNING - The use of this document may involve hazardous materials, operations and equipment. This document does not purport to address all of the safety problems associated with its use. The hazards associated with the use of this method have been assessed using cut-back bitumen containing 10 % kerosene and 90 % 160/220 penetration grade bitumen and were found low enough to be acceptable. However it is the responsibility of the user of this document to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. A thin layer of recovered binder from a bituminous emulsion or a cut-back or fluxed bituminous product is stabilized for 24 h at 85 °C in a ventilated oven. This standard differs from DIN EN 14895:2006-06 as follows: a) the number of the standard has been changed; b) the scope has been rendered more precise with regard to the stabilisation after recovery; c) a distinction is no longer made between types of binders; d) the homogenisation of the samples has been given in more detail; e) the preparation of the samples for further testing has been included; f) the standard has been editorially revised.