BS EN 13361-2013 pdf download.Geosynthetic barriers Characteristics required for use in the construction of reservoirs and dams.
If the material under consideration is a composite, the performance of the claimed dominant barrier element shall dictate the characteristics listed in Table 1.
4.4.2 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.
4.4.3 Burst strength
Data on the burst strength 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.
4.4.4 Friction characteristics (direct shear and inclined plane tests).
Data on friction characteristics are required in all applications where differential movement may take place between the product and adjacent materials including, but not by way of limitation, geosynthetic barriers applied to slopes and certain types of anchoring arrangements.
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 and/or ASTM D6496) or peel (EN ISO 13426-1 and 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 should be carried out to establish the friction characteristics between all the materials used.
4.4.5 Low temperature behaviour
Data on low temperature behaviour are required for applications where polymer and bituminous products may be exposed to low temperatures in storage, construction, and use.
Tests which set simple pass/fail criteria at a single temperature condition may not be appropriate for this purpose, Prehydrated GBR.C should not be 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.
4.4.10 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.
4.5 Release of dangerous substances
National regulations on dangerous substances may require verification and declaration on release, and sometimes content, when construction products covered by this standard are placed on those markets.
In the absence of European harmonised test methods, verification and declaration on release’content should be done taking into account national provisions in the place of use.
NOTE An informative database covering European and national provisions on dangerous substances is available at the Construction web site on EUROPA accessed through: htty’/ec.eurooa.eu.ente,viise/constructionjcpd-ds/
5 Evaluation of conformity
5.1 Presentation of characteristics
The characteristics specified in Table 2, except br curability, expressea as mean values ano iolerance limit(s) corresponding to the 95 % confidence level, shall be given by the manufacturer, based on the statistical interpretation of his internal quality control measurements.
Physical examination or preliminary testing, according to one of the test methods referenced in Table 1, may indicate that values obtained for a product lie below (or above) the sensitivity threshold established for that test method. In these particular circumstances the manufacturer may declare a value as being less (or greater) than this sensitivity threshold value.
Information about durability shall be expressed in accordance with Annex B.
5.2 Verification of values
The marking and labelling of the rolls and of the products shall be checked. The marking of the products shall be according to EN ISO 10320.
NOTE The method described in this clause is not compulsory for an on-site control procedure.
The compliance of characteristics with the values defined in 5.1 shall be based on measurements made on two representative samples (A and B), taken from two different rolls. Sampling shall be made in accordance with
EN ISO 9862.BS EN 13361-2013 pdf download.