What is BS EN 12697‑53- Spreadability-meter method for bituminous mixtures about?  
BS EN 12697 is a European Standard that discusses bituminous mixtures and related test methods. The main objective of the BS EN 12697 series is to ensure that the performance of bituminous mixtures contributes to the structural integrity of your engineering works.
BS EN 12697‑53 is the 53rd part of the series that specifies a method to measure the spreadability characteristics of bituminous mixtures which are able to vary with time.
BS EN 12697‑53 applies to bituminous mixtures both those made up in the laboratory and those resulting from worksite sampling, with an upper aggregate size not larger than 31,5 mm.
Note: BS EN 12697‑53 not applicable to mastic asphalt.
Who is BS EN 12697‑53- Spreadability-meter method for bituminous mixtures for? 
BS EN 12697‑53 on the cohesion increase by the spreadability-meter method is useful for: 
- Manufacturers and suppliers of bituminous mixtures
- Suppliers of construction materials
- Construction companies
- Civil engineers
- Contractors
- Road maintenance authorities
- Testing laboratories
Why should you use BS EN 12697‑53- Spreadability-meter method for bituminous mixtures?  
Adhesion and cohesion are important properties that affect the performance of asphalt mixtures before and after water conditioning. The aim of the test is to determine the cohesion increase of a bituminous mixture is fixed temperature and hygrometry conditions, using a spreadability meter.
The cohesion increase test recommended by BS EN 12697-53, involves measuring the resistance to shear caused by the movement of a piston in a mould filled with the bituminous mixture to be tested. As the shear force increases, the cohesiveness of the bituminous mixture increases.
BS EN 12697-53 can assist you in determining the time difference between manufacturing and laying. It is intended to be assistance for bituminous mixtures design rather than a type test.
