BSI PD CEN/TR 17086:2020
$198.66
Further guidance on the application of EN 13791:2019 and background to the provisions
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 70 |
This document explains the reasoning behind the requirements and procedures given in EN 13791 [1] and why some concepts and procedures given in EN 13791:2007 [2] were not adopted in the 2019 revision. The annex comprises worked examples of the procedures given in EN 13791:2019.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 8 | 1 Scope 2 Symbols and abbreviated terms |
| 9 | 3 General principles adopted for the revision |
| 10 | 4 In situ compressive strength and other concrete properties assumed in the EN 1992-1-1 design process 4.1 General |
| 11 | 4.2 Concrete compressive strength based on test specimens |
| 13 | 4.3 Concrete compressive strength based on the strength of cores from the structure 5 Differences between test specimens and concrete in the structure 5.1 Introduction |
| 14 | 5.2 Reference test specimen |
| 15 | 5.3 Effects of the moisture condition on in situ specimens |
| 16 | 5.4 Effect of maturity on concrete strength 5.5 Effects of curing |
| 17 | 5.6 Effects of vibration 5.7 Effects of excess entrapped air 6 Testing variables that influence core strength 6.1 Introduction 6.2 Direction relative to the casting 6.3 Imperfections |
| 18 | 6.4 Diameter of core 6.5 Length/diameter ratio 6.6 Flatness of end surfaces 6.7 Capping of end surfaces 6.8 Effect of drilling 6.9 Reinforcement |
| 19 | 7 Scope in EN 13791:2019, Clause 1 8 Terms and definitions, symbols and abbreviations in EN 13791:2019, Clause 3 |
| 20 | 9 Investigation objective and test parameters in EN 13791:2019, Clause 4 10 Test regions and test locations in EN 13791:2019, Clause 5 11 Core testing and the determination of the in situ compressive strength in EN 13791:2019, Clause 6 |
| 21 | 12 Initial evaluation of the data set in EN 13791:2019, Clause 7 |
| 22 | 13 Estimation of compressive strength for structural assessment of an existing structure in EN 13791:2019, Clause 8 13.1 Based on core test data only (see EN 13791:2019, 8.1) |
| 27 | 13.2 Based on a combination of indirect test data and core test data (see EN 13791:2019, 8.2) |
| 32 | 13.3 Use of indirect testing with selected core testing (see EN 13791:2019, 8.3) 14 Assessment of compressive strength class of supplied concrete in case of doubt in EN 13791:2019, Clause 9 14.1 General in EN 13791:2019, 9.1 |
| 33 | 14.2 Use of core test data (see EN 13791:2019, 9.2) |
| 34 | 14.3 Indirect testing plus selected core testing (see EN 13791:2019, 9.3) 14.4 Screening test using general or specific relationship with an indirect test procedure (see EN 13791:2019, 9.4) |
| 38 | 14.5 Procedure where the producer has declared non-conformity of compressive strength in EN 13791:2019, 9.5 14.6 Use of comparative testing |
| 41 | Annex A (informative)Examples of the calculations A.1 Example A1: Calculating the rebound number |
| 43 | A.2 Example A2: Calculating the in situ strength from core test data A.2.1 Example A2.1 A.2.2 Example A2.2 |
| 44 | A.3 Example A3: Assessing the data for a test region to check whether it contains two or more compressive strength classes |
| 47 | A.4 Example A4: Check for statistical outliers |
| 49 | A.5 Example A5: Calculation of characteristic in situ compressive strength from core test data |
| 50 | A.6 Example A6: Establishing a correlation between an indirect test and in situ compressive strength |
| 54 | A.7 Example A7: Using combined indirect testing and core testing to estimate the characteristic in situ compressive strength and the compressive strength at a location where only an indirect test result is available |
| 57 | A.8 Example A8: Estimating the characteristic in situ compressive strength using indirect testing and three cores taken from the weaker area A.8.1 Example A8.1 A.8.2 Example A8.2 |
| 58 | A.9 Example A9: Screening test using a generic relationship |
| 61 | A.10 Example A10: Screening test using a rebound hammer that has been calibrated against test specimens made from the same concrete |
| 65 | A.11 Example A11: Assessment of compressive strength class of concrete as placed using indirect testing and selected core test data |
| 66 | A.12 Example A12: Assessment of compressive strength class of recently supplied concrete using core test data only |
