BSI PD ISO/TS 20432:2022 2023
$167.15
Guidelines for the determination of the long-term strength of geosynthetics for soil reinforcement
Published By | Publication Date | Number of Pages |
BSI | 2023 | 42 |
PDF Catalog
PDF Pages | PDF Title |
---|---|
2 | National foreword |
7 | Foreword |
9 | 1 Scope 2 Normative references 3 Terms, definitions, abbreviated terms and symbols 3.1 Terms and definitions |
10 | 3.2 Abbreviated terms 3.3 Symbols |
12 | 4 Design procedure 4.1 General 4.2 Design lifetime 4.3 Causes of degradation |
13 | 4.4 Design temperature 5 Determination of long-term creep strain 5.1 General |
14 | 5.2 Extrapolation 5.3 Time-temperature superposition methods |
15 | 5.4 Isochronous curves 5.5 Weathering, chemical and biological effects |
16 | 6 Determination of long-term strength 6.1 Tensile strength 6.2 Reduction factors 6.3 Modes of degradation |
17 | 7 Creep rupture 7.1 General |
18 | 7.2 Measurement of creep rupture: conventional method |
19 | 7.3 Curve fitting (conventional method) |
21 | 7.4 Curve fitting for time-temperature block shifting of rupture curves |
22 | 7.5 Strain shifting and the stepped isothermal method |
23 | 7.6 Extrapolation and definition of reduction factor or lifetime |
24 | 7.7 Residual strength 7.8 Reporting of results 7.9 Procedure in the absence of sufficient data |
25 | 8 Installation damage 8.1 General 8.2 Data recommended |
26 | 8.3 Calculation of reduction factor 8.4 Procedure in the absence of direct data 8.4.1 General 8.4.2 Interpolation from measurements with different soils |
27 | 8.4.3 Interpolation between products of the same product line 8.4.4 Laboratory damage tests 9 Weathering, chemical and biological degradation 9.1 General |
28 | 9.2 Data recommended for assessment 9.3 Weathering |
29 | 9.4 Chemical degradation 9.4.1 Causes of chemical degradation 9.4.2 Evidence from service experience |
30 | 9.4.3 Accelerated chemical degradation tests |
34 | 9.4.4 Oxidation of polyolefins |
35 | 9.4.5 Hydrolysis of polyesters |
37 | 9.4.6 Procedure in the absence of sufficient data 9.5 Biological degradation 10 Determination of long-term strength 10.1 Factor of safety fs |
38 | 10.2 Design for residual strength 11 Reporting |
39 | Bibliography |