What is BS EN 12697-21 about?  
BS EN 12697- 21 is the 21st part in the multi-series of European standard that discusses bituminous mixtures.
BS EN 12697-21 specifies a test method for measuring the indentation of mastic asphalt when it is penetrated at a given temperature, load and for a fixed time period by a standardized cylindrical indentor pin with a circular flat-ended base.
Note: BS EN 12697-21 applies to mastic asphalt with aggregates of maximum nominal size less than or equal to 16 mm. 
Who is BS EN 12697-21 for? 
BS EN 12697-21 on indentation using plate specimens is relevant to:
- Manufacturers and suppliers of bituminous mixtures
- Suppliers of construction materials
- Civil engineers
- Contractors
- Road maintenance authorities
- Testing laboratories
Why should you use BS EN 12697-21?  
Bitumen when used as a binder in asphalt, is widely used in the construction domain for road construction, paving and roofing.
BS EN 12697-21 provides a test method for measuring the indentation of mastic asphalt when it is penetrated by a standardised cylindrical indentor pin with a circular flat-ended base at a specific temperature, force, and time period.
The test method recommended by BS EN 12697-21, can ensure quality and performance of bituminous mixture, thereby imparting structural integrity for your engineering needs.
