BSI 16/30320756 DC:2016 Edition
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BS EN 1097-8. Tests for mechanical and physical properties of aggregates . Part 8. Determination of the polished stone value
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 39 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | European foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions |
| 8 | 4 Principle 5 Sampling 6 Materials Table 1 — Grading requirements for corn emery |
| 9 | Table 2 — Grading requirements for emery flour 7 Apparatus 7.1 General |
| 10 | 7.2 Accelerated polishing machine |
| 11 | Figure 1 — Typical accelerated polishing machine |
| 12 | Figure 2 — Test specimen dimensions 7.3 Friction tester 7.3.1 Calibration 7.3.2 Design |
| 13 | Figure 3 — Friction tester |
| 15 | Figure 4 — Position of the pendulum, the slider and the test specimen Table 3 — Properties of the slider 7.4 Test sieves 7.5 Grid sieve |
| 16 | 7.6 Length gauge or callipers 7.7 Equipment for preparing test specimens 8 Preparation of test specimens |
| 17 | Figure 5 — Example of specimens containing randomly and non-randomly placed particles |
| 18 | 9 Conditioning of the rubber-tyred wheel 10 Accelerated polishing of specimens |
| 19 | 11 Friction test procedure |
| 22 | Figure 6 — Centring of a test specimen |
| 23 | 12 Calculation and expression of results |
| 24 | 13 Test report 13.1 Required data 13.2 Optional data |
| 25 | Annex A (normative) Determination of aggregate abrasion value (AAV) A.1 General A.2 Principle A.3 Sampling A.4 Materials |
| 26 | A.5 Apparatus A.5.1 General |
| 27 | A.6 Preparation of test specimens A.6.1 Test portion A.6.2 Specimens A.7 Procedure |
| 28 | A.8 Calculation and expression of results |
| 29 | A.9 Test report |
| 30 | Annex B (normative) Control of materials |
| 31 | Annex C (normative) Calibration of the accelerated polishing machine C.1 Control of rubber-tyred wheels C.2 Accelerated polishing machine |
| 32 | C.3 Rate of flow of corn emery and emery flour Figure C.1 — Typical notched straight edge |
| 33 | Figure C.2 – Recommendation for use of the notched straight edge |
| 34 | Annex D (normative) Calibration of the friction tester and sliders D.1 Friction tester D.1.1 General D.1.2 Mass of pendulum arm and pointer D.1.3 Balancing of the pendulum arm assembly D.1.4 Setting the effective spring tension |
| 35 | D.1.5 Setting the pointer stop D.2 Control of sliders and slider rubber |
| 36 | Annex E (normative) Friction tester reference stone specimen preparation and friction slider conditioning E.1 General E.2 Preparation and initial testing of friction tester reference stone specimens E.3 Slider conditioning |
| 37 | Annex F (informative) Precision F.1 General F.2 PSV value – National Standard F.3 PSV value – European cross-border testing Table F.1 — Repeatability and reproducibility (PSV units) Table F.2 — Functional relationships (PSV units) |
| 38 | F.4 Aggregate abrasion value (AAV) Table F.3 — Precision values for the determination of aggregate abrasion value |
| 39 | Bibliography |
