BS EN 12697‑49 is a European standard and a part of the BS EN 12697 series that discusses the determination of friction after polishing for bituminous mixtures.
BS EN 12697‑49 specifies a method to determine the friction at 60 km/h after polishing during a fixed number of passes on surfaces of bituminous mixtures samples or to follow its evolution as a function of the number of polishing passes. The samples used are either produced in a laboratory or are cores taken from the site.
BS EN 12697‑49 on bituminous mixtures applies to:
Bituminous mixtures, which are also called asphalt mixtures, are the combinations of aggregates with different gradations, filler types, content, and hardness with bitumen of different grades and quantities. Friction after polishing an average of two or more single results μ FAP.
BS EN 12697‑49 lays down the technicalities for a test procedure to determine the friction after polishing the bituminous mixture. It gives you detailed information about the apparatus arrangement to conduct the test, explains the principle of the test, helps the users to execute the calculations as well as concludes the final test report.
Overall, BS EN 12697‑49 provides you with a comprehensive guide that will be handy throughout the process of friction after polishing of bituminous mixture.
BS EN 12697‑49:2022 supersedes BS EN 12697‑49:2014, which is withdrawn. It includes:
EN 12697-49