DIN CEN/TS 16346:2012-12

This document (CEN/TS 16346:2012) has been prepared by Technical Committee CEN/TC 336 "Bituminous binders", the secretariat of which is held by AFNOR (France). A DIN SPEC in accordance with the Pre-standard procedure is the result of standardization work when it has not yet been published by DIN due to certain reservations regarding the content or when it has not been drawn up strictly according to the official standards development process. No draft has been published for the present DIN SPEC. Experience with this DIN SPEC is requested - preferably as a file per email to nmp@din.de in tabular form. The template for this table can be obtained on the Internet at http://www.din.de/stellungnahme; - or in paper form from the Materials Testing Standards Committee (NMP) at DIN. This Technical Specification specifies a method for the determination of the breaking and immediate adhesivity behaviour of cationic bituminous emulsions in contact with an aggregate. The method applies to emulsions used for surface dressing applications and can be used for formulation and production control purposes. WARNING - The use of this Technical Specification may involve hazardous materials, operations and equipment. This Technical Specification does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this Technical Specification to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. Prescribed quantities of emulsion and 2/4 mm aggregate are mixed under specified conditions. The time it takes to obtain a single agglomerated mass is a measure of the breaking time of the emulsion. After 5 min ± 15 s, the final mixture is washed with water and the percentage of the aggregate surface covered with binder is assessed visually under specified conditions. This percentage is a measure of the immediate adhesivity of the emulsion with the considered aggregate.