BS EN 13375:2019 pdf free.Flexible sheets for waterproofing – Waterproofing of concrete bridge decks and other concrete surfaces trafficable by vehicles – Specimen preparation. Specimens for the different performance related tests are defined in the relevant standards dealing with the testing of flexible sheets.
If a waterproofing system defined by the producer does not include an asphalt layer as a protection layer, an asphalt layer, according to Clause Z shall be laid onto the waterproofing system, Figure 1.a.  If a layer, e.g. mastic asphalt, is used as a protection layer in the waterproofing system, Figure 1.b, no asphalt layer shall be put onto the waterproofing system to fabricate the specimens.The waterproofing system shall be applied on base specimen concrete slabs as described in this document or in the relevant test standard. NOTE 1 To avoid the influence of vibrations during compaction, the concrete slabs can be laid on flat ground using a soft intermediate layer (e.g. sand). NOTE 2 The required number of slabs is prepared according to the number of intended tests and test methods. It might be advantageous to hold them together by a stiff frame. Figure 2 gives an example of this procedure. Alternatively, the base specimens can be prepared separately for each test. The waterproofing system shall be applied in accordance with the instructions from the manufacturer. The type and amount of primer (bituminous, resin etc.) and adhesive bitumen (in the case of pour-and- roll technique system) shall be within the range defined by the manufacturer. NOTE 3 For torch-on systems, it is important that a uniform welding wave is produced during application. For pour-and-roll technique systems, the temperature of the adhesive bitumen shall be checked during melting and application and shall not exceed temperature ranges recommended by the manufacturer. It is advised to pay attention not to overheat the polymer bitumen. After cooling to room temperature, the waterproofing shall be cut along the edges of the concrete slabs to obtain individual specimens to prepare for the different tests. The asphalt layer shall be applied in accordance with 72 of this document.BS EN 13375 pdf download.