What is BS EN 12697-26 - Characterizing the stiffness of bituminous mixtures about?
BS EN 12697-26 is part of the multi-series documents that are applicable to bituminous mixtures. BS EN 12697-26 specifies the methods for characterizing the stiffness of bituminous mixtures by alternative tests, including bending tests and direct and indirect tensile tests. The tests are performed on compacted bituminous material under sinusoidal loading or other controlled loadings, using several types of specimens and supports.
The procedure is used to rank bituminous mixtures based on stiffness, as a guide to relative performance in the pavement, to obtain data for estimating the structural behaviour in the road, and to judge test data according to specifications for bituminous mixtures.
For the choice of specific test conditions, the requirements of the product standards for bituminous mixtures should be respected.
Note1: BS EN 12697-26 does not impose a particular type of testing device the precise choice of the test conditions depends on the operating scope and working range of the device used.
Note2: The applicability of BS EN 12697-26 is described in the product standards for bituminous mixtures.
Who is BS EN 12697-26 - Characterizing the stiffness of bituminous mixtures for?
BS EN 12697-26 on the characterizing the stiffness of bituminous mixtures is useful for:
- Manufacturers and suppliers of bituminous mixtures and asphalt
- Suppliers of construction materials
- Construction and civil engineers
- Contractors
- Road maintenance authorities
Why should you use BS EN 12697-26 - Characterizing the stiffness of bituminous mixtures?
Characterizing the stiffness of bituminous mixtures is fundamental to the analysis of the stress-strain response of pavement under traffic loading.
BS EN 12697-26 specifies the methods for characterizing the stiffness of bituminous mixtures by alternative tests, including bending tests and direct and indirect tensile tests.
BS EN 12697-26 is used to rank bituminous mixtures based on stiffness, as a guide to relative performance in the pavement and to obtain data for estimating the structural behaviour in the road.
What’s changed since the last update?
BS EN 12697-26:2018 supersedes BS EN 12697-26:2012, which is withdrawn.
BS EN 12697-26:2018 includes some technical changes with respect to BS EN 12697-26:2012. These include:
- The series title no longer makes the method exclusively for hot mix asphalt [Title]
- Implementation of a real have sinusoidal load in Annex C
- Implementation of several technical corrections in all annexes
- Adjustment of procedures in all the tests
- Application of the correct wording within all the test procedures