NEN EN 12697-26 : 2012

1 Scope
2 Normative references
3 Terms, definitions and symbols
   3.1 Terms and definitions
   3.2 Symbols
4 Principle
5 Sinusoidal loading
   5.1 Test methods
       5.1.1 General
       5.1.2 Bending tests
       5.1.3 lndirect tensile test
       5.1.4 Direct uniaxial tests
   5.2 Loading conditions
   5.3 Load amplitudes
   5.4 Loading frequencies
6 Controlled strain rate loading
   6.1 Test method
   6.2 Loading conditions
   6.3 Strain amplitudes
       6.3.1 Preliminary test
       6.3.2 Strain amplitudes during the test
   6.4 Test loading times
7 Temperatures
8 Expression of results
9 Test report
   9.1 General
   9.2 Information on specimen
   9.3 Information on test method
   9.4 Information on the test and results
   9.5 Optional information
10 Precision
Annex A (normative) Two point bending test on trapezoidal
                    specimens (2PB-TR) or on prismatic
                    specimens (2PB-PR)
   A.1 Principle
   A.2 Equipment
   A.3 Specimen preparation
   A.4 Mode of operation
       A.4.1 Stabilising the specimen
       A.4.2 Procedure
Annex B (normative) Three point bending test on prismatic
                    specimens (3PB-PR) and four point
                    bending test on prismatic specimens
                    (4PB-PR)
   B.1 Principle
   B.2 Equipment
   B.3 Specimen preparation
       B.3.1 Dimensions
       B.3.2 Sample manufacture
   B.4 Mode of operation
       B.4.1 Stabilising the specimen
       B.4.2 Procedure
Annex C (normative) Test applying Indirect tension to
                    cylindrical specimens (IT-CY)
   C.1 Principle
   C.2 Equipment
       C.2.1 General devices
       C.2.2 Test equipment
   C.3 Specimen preparation
       C.3.1 Preparation
       C.3.2 Storage conditions
   C.4 Mode of operation
       C.4.1 Conditioning and test temperature
       C.4.2 Mounting the specimen
       C.4.3 Stiffness measurement
Annex D (normative) Direct tension-compression test on
                    cylindrical specimens (DTC-CY)
   D.1 Principle
   D.2 Equipment
   D.3 Specimen preparation
   D.4 Mode of operation
       D.4.1 Stabilising the specimen
       D.4.2 Procedure
Annex E (normative) Test applying direct tension to
                    cylindrical specimens (DT-CY) or to
                    prismatic specimens (DT-PR)
   E.1 Principle
   E.2 Equipment
   E.3 Specimen preparation
       E.3.1 Cylindrical specimen
       E.3.2 Prismatic specimen
   E.4 Mode of operation
       E.4.1 Stabilisation of the specimen
       E.4.2 Procedure
   E.5 Derivation of the master-curve
       E.5.1 Isotherms
       E.5.2 Master curve at a fixed temperature
   E.6 Determination of the stiffness modulus for the fixed
       loading time

Defines the methods for characterising the stiffness of bituminous mixtures by alternative tests, including bending tests and direct and indirect tensile tests.