BS EN 13362:2018 pdf download.Geosynthetic Barriers – Characteristics required for use in the construction of canals.
4.4 Characteristics relevant to specific conditions of use 4.4.1 General The necessary data based on the test requirements and test methods described in this document for the functions and conditions of use described as relevant (see Table 1) in the project specification shall be provided. The list of characteristics in Table 1 includes those relevant to all conditions of use (A), (essential characteristics are listed in Table ZA.1), and those relevant to specific conditions of use (S). These specific conditions of use (S) are listed from 4.4.2 to 4.4.10. If the product under consideration is a multicomponent barrier, the performance of the claimed GBR shall dictate the characteristics listed in Table 1.
4.4.2 Burst strength and elongation Data on the burst strength and elongation are required in all applications where multi-axial deformation of geosynthetic barriers can occur as a result of settlement, deformation in designed or accidental situations. 4.4.3 Tear strength Data on the tear strength of polymeric and bituminous barriers are required when they are laid on slopes or inclined surfaces or otherwise exposed to mechanical stress. 4.4.4 Friction characteristics (direct shear and inclined plane tests) Data on friction characteristics is required in all applications where differential movement may take place between the product and adjacent materials. In addition to the friction characteristics, information on the internal bonding strength of GBR-C in the direction of the actual stress may be relevant. A shear (EN ISO 12957-1 and/or ASTM D6243) or peel (EN ISO 13426-1 and/or EN ISO 13426-2 and/or ASTM D6496 (for needle punched GBR-C)) test may be appropriate, particularly on slopes or in applications where shear stress may occur (i.e. during installation). Site specific testing may be carried out to establish the friction characteristics between all the materials used. 4.4.5 Low temperature behaviour Data on low temperature behaviour is required for applications where polymeric and bituminous products may be exposed to low temperatures in storage, construction and use. Tests which set simple conforming/non-conforming criteria at a single temperature condition may not be appropriate for this purpose. It is recommended that prehydrated GBR-C are not stored or installed when the ambient temperature is below 0 °C.
4.4.6 Weathering Data on weathering (combined effects of cycles of wetting, temperature change, and exposure to UV light) are required for applications where the GBR-C barrier will be exposed to weathering without adequate protective cover. It should be noted that in all normal situations GBR-C barriers should be covered with soil or other revetment on the same working day or prior to any circumstances which could cause a hydration of the clay component. 4.4.7 Chemical resistance This should be restricted to a consideration of the substrate on to which the material is laid and/or chemicals contained within the stored water. 4.4.8 Resistance to wetting and drying Data on the resistance of GBR-C to repeated wetting and drying is required when the conditions of use will subject the product to this sequence of actions. The ratio of the water permeability of the exposed sample to that of an unexposed sample shall not exceed a factor of 5. 4.4.9 Freeze–thaw cycle resistance Data on the resistance of GBR-C to freeze/thaw is required when the conditions of use will subject the product to this sequence of actions. The ratio of the water permeability of the exposed sample to that of an unexposed sample shall not exceed a factor of 5.BS EN 13362 pdf download.