BS EN 12697-49:2022 – TC
$186.33
Tracked Changes. Bituminous mixtures. Test methods – Determination of friction after polishing
| Published By | Publication Date | Number of Pages |
| BSI | 2022 | 76 |
This document specifies a method to determine the friction at 60 km/h after polishing during a fixed number of passes on surfaces of bituminous mixtures samples, or to follow its evolution as a function of the number of polishing passes. The samples used are either produced in a laboratory or are cores taken from the site.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 46 | National foreword |
| 49 | European foreword |
| 51 | Introduction |
| 53 | 1 Scope 2 Normative references 3 Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions 3.2 Symbols and abbreviated terms |
| 54 | 4 Principle 5 Equipment 5.1 Test device 5.1.1 General 5.1.2 Polishing unit |
| 57 | 5.1.3 Specimen clamping system 5.1.4 Measuring unit |
| 59 | 5.2 Control plate for comparative measurements 5.3 Sand-blasting-equipment 6 Other materials 6.1 Quartz powder |
| 60 | 6.2 Water quartz powder mixture 6.3 Corundum 7 Test method 7.1 Preparation of the specimens 7.1.1 General 7.1.2 Specimens prepared in the laboratory |
| 61 | 7.1.3 Specimens taken from the site 7.1.4 Conditioning of specimens 7.2 Polishing procedure 7.2.1 General 7.2.2 Pre-test check of the polishing unit 7.2.3 Polishing process |
| 62 | 7.3 Friction measurement 7.3.1 Pre-test check of the measurement device 7.3.2 Friction test |
| 63 | 8 Calculation and expression of the results 8.1 Friction result μ FAP on a single specimen 8.2 Determination of FAP 9 Test report |
| 64 | 10 Precision |
| 65 | Annex A (informative) Example of polishing head and friction unit |
| 66 | Annex B (informative) Results obtained from the curve FAP against passes |
| 67 | Annex C (informative) National experiences |
| 74 | Bibliography |
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