BS EN 12697-24:2018
$198.66
Bituminous mixtures. Test methods – Resistance to fatigue
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 68 |
This European Standard specifies the methods for characterizing the fatigue of bituminous mixtures using alternative tests, including bending tests and direct and indirect tensile tests. The tests are performed on compacted bituminous material under a sinusoidal loading or other controlled loading, using different types of specimens and supports. The procedure is used: a) to rank bituminous mixtures on the basis of resistance to fatigue; b) as a guide to relative performance in the pavement; c) to obtain data for estimating the structural behaviour of the road; and d) to judge test data according to specifications for bituminous mixtures. Because this European Standard does not impose a particular type of testing device, the precise choice of the test conditions depends on the possibilities and the working range of the device used. For the choice of specific test conditions, the requirements of the product standards for bituminous mixtures need to be respected. The applicability of this document is described in the product standards for bituminous mixtures.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 7 | 1 Scope 2 Normative references 3 Terms, definitions, symbols and abbreviations |
| 8 | 3.1 General 3.2 Two-point bending test on trapezoidal shaped specimens (2PB-TR) |
| 9 | 3.3 Two-point bending test on prismatic shaped specimens (2PB-PR) |
| 11 | 3.4 Three-point bending test on prismatic shaped specimens (3PB-PR) 3.4.1 Symbols |
| 12 | 3.5 Four-point bending test on prismatic shaped specimens (4PB-PR) |
| 17 | 3.6 Symbols for indirect tensile test on cylindrical shaped specimens (IT-CY) 3.7 Symbols for Cyclic Indirect tensile Test on cylindrical shaped specimen (CIT-CY) |
| 18 | 4 Sample preparation 4.1 Storage of the specimens 4.2 Drying of the specimens |
| 19 | 4.3 Dimensions and bulk density of the specimens 5 Failure 6 Selection test conditions 7 Summary of the procedures 7.1 Two-point bending test on trapezoidal shaped specimens (2PB-TR) 7.2 Two-point bending test on prismatic shaped specimens (2PB-PR) 7.3 Three-point bending test on prismatic shaped specimens (3PB-PR) |
| 20 | 7.4 Four-point bending test on prismatic shaped specimens (4PB-PR) 7.5 Indirect tensile test on cylindrical shaped specimens (IT-CY) 7.6 Cyclic Indirect tensile test on cylindrical shaped specimens (CIT-CY) 8 Checking of the testing equipment |
| 21 | 9 Test report |
| 22 | Annex A (normative)Two-point bending test on trapezoidal shaped specimens (2PB-TR) A.1 Principle A.1.1 General A.1.2 Element test |
| 23 | A.1.3 Fatigue line A.2 Equipment A.2.1 Test machine A.2.2 Thermostatic chamber A.2.3 Measuring equipment A.2.3.1 Force A.2.3.2 Displacement A.3 Specimen preparation A.3.1 Sawing and storing |
| 24 | A.3.2 Characteristics of the specimens A.3.3 Embedding check |
| 25 | A.3.4 Gluing the ends |
| 26 | A.4 Procedure A.4.1 Preparing the test equipment A.4.2 Carrying out the fatigue test |
| 27 | A.4.3 Choice of the strain A.4.4 Number of element tests A.5 Calculation and expression of results |
| 28 | A.6 Test report A.7 Precision A.7.1 General A.7.2 Results relating to ε6: |
| 29 | A.7.3 Results relating to 1/b: |
| 30 | Annex B (normative)Two-point bending test on prismatic shaped specimens (2PB-PR) B.1 Principle B.2 Equipment B.2.1 Test machine B.2.2 Thermostatic chamber B.2.3 Measuring equipment B.2.3.1 Force B.2.3.2 Displacement B.2.3.3 Temperature |
| 31 | B.3 Specimen preparation B.3.1 Sawing B.3.2 Characteristics of the specimens B.3.3 Gluing the ends B.4 Procedure B.4.1 Preparing the test equipment B.4.2 Carrying out the fatigue test |
| 32 | B.4.3 Choice of the tension B.5 Calculation and expression of results |
| 34 | B.6 Test report B.7 Precision |
| 35 | Annex C (normative)Three-point bending test on prismatic shaped specimens (3PB-PR) C.1 Principle C.1.1 General C.1.2 Element test C.1.3 Fatigue line C.2 Equipment C.2.1 Test machine C.2.2 Load cell C.2.3 Extensometer and displacement sensor C.2.4 Clamping device |
| 36 | C.2.5 Data acquisition equipment C.2.6 Thermostatic chamber C.3 Specimen preparation C.3.1 Manufacturing and sawing C.3.2 Clamping devices preparation C.4 Procedure C.4.1 Preparing the test equipment C.4.2 Carrying out the fatigue test |
| 37 | C.4.3 Load function, extensometer signal function, and displacement function recording C.4.4 End of test C.5 Calculation and expression of results C.5.1 Calculation of the stress function and the strain function at a cycle |
| 38 | C.5.2 Calculation of the dynamic modulus, phase difference angle, and density of dissipated energy at one cycle |
| 39 | C.5.3 Determination of the fatigue law and energy law |
| 40 | C.6 Test report |
| 41 | C.7 Precision |
| 42 | Annex D (normative)Four-point bending test on prismatic shaped specimens (4PB-PR) D.1 Principle D.1.1 General D.1.2 Element test |
| 43 | D.1.3 Fatigue line |
| 44 | D.2 Equipment D.2.1 Test machine D.2.2 Clamping device D.2.3 Thermostatic chamber |
| 45 | D.2.4 Electronic data registration equipment D.2.5 Checking of the test equipment D.3 Specimen preparation D.3.1 Dimensions |
| 46 | D.3.2 Sawing D.3.3 Condition D.3.4 Mounting D.4 Procedure D.4.1 Preparing the test equipment |
| 47 | D.4.2 Carrying out the fatigue test D.4.3 Choice of test conditions D.4.4 Data processing |
| 48 | D.5 Calculation and expression of results D.6 Test report |
| 49 | D.7 Precision |
| 50 | Annex E (normative)Indirect tensile test on cylindrical shaped specimens (IT-CY) E.1 Principle E.2 Equipment E.2.1 Test machine E.2.2 Displacement E.2.3 Thermostatic chamber E.2.4 Recording and measuring system |
| 51 | E.2.5 Loading frame E.2.5.1 Frame E.2.5.2 Loading strips |
| 52 | E.2.5.3 Deformation measurement system |
| 53 | E.2.6 Positioning rig E.3 Specimen preparation E.3.1 Test specimen E.3.2 Specimen dimensions |
| 54 | E.3.3 Position of the deformation and loading strips E.3.4 Conditioning E.4 Procedure |
| 55 | E.5 Calculation and reporting of results |
| 58 | E.6 Test report E.7 Precision |
| 59 | Annex F (normative)Cyclic indirect tensile test on cylindrical shaped specimens (CIT-CY) F.1 Principle F.2 Equipment F.2.1 Test machine F.2.2 Loading F.2.3 Displacement |
| 60 | F.2.4 Thermostatic chamber F.2.5 Recording and measuring system F.2.6 Loading strips |
| 61 | F.3 Specimen preparation F.3.1 Test specimen |
| 62 | F.3.2 Specimen dimensions F.4 Procedure F.4.1 Test temperature F.4.2 Temperature conditioning F.4.3 Mounting the specimen |
| 63 | F.4.4 Loading conditions F.4.4.1 General F.4.4.2 Load frequency F.4.4.3 Definition of the lower load level F.4.4.4 Definition of the upper load levels F.4.5 Carrying out the fatigue test |
| 64 | F.5 Calculation and reporting of results F.5.1 Analysis of load and deformation signals F.5.2 Calculation of the test results |
| 65 | F.6 Test report F.7 Precision |
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