BS EN 14187-7 pdf free download
BS EN 14187-7-2019 pdf free download.Cold applied joint sealants – Test methods Part 7: Determination of the resistance to flame.
This document specifies a test method for determination of the resistance to flame of cold applied joint sealants for use in joints in roads, air fields and other trafficked areas.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 6927, Buildings and civil engineering works — Sealants — Vocabulary (ISO 6927)
EN ISO 8340, Building construction — Sealants — Determination of tensile properties at maintained extension (ISO 8340)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 6927 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.orgJobp 4 Principle
The resistance to flame of cold applied joint sealants is determined by subjecting it to the flame for a specified time.
S Apparatus and materials
5.1 High temperature laboratory burner, rated to supply up to 3 000 W and capable of burning
approximately 200 g of propane per hour at operating capacity.
5.2 Draught shield consisting of an open ended cylinder of light gauge metal with a diameter of
(125 ± 3) mm and a height of (300 ± 5) mm.
5.3 Steel specimen support, made from two 150 mm long rods and two 50 mm long rods, all of
3 mm nominal diameter, to form a support with a rectangular centre opening of 40 mm x 50 mm as
shown in Figure 1.
5.4 Temperature measuring device, capable of measuring of up to 300°C with an accuracy of ± 5°C.
6 Preparation of test specimens
One test specimen made and cured in accordance with EN ISO 8340 method B shall be used.
7 Procedure
7.1 Assemble the apparatus using a tripod as a support tor the cylindrical draught shield (see Figure 1).
7.2 Centre the high temperature burner (5.1) under the draught shield (5.2) with the top in the same place as the bottom of the draught shield.
7.3 Centre the specimen support on the top of the draught shield (5.2) with the temperature measuring device (5.4) in a horizontal position laid on it with the sensor at the centre.
7.4 Regulate the high temperature laboratory burner (5.1) to produce a reading of constant temperature (260 ± 10) °C for (120 ± 1) s.
7.5 Substitute the specimen for the temperature measuring device by the test specimen so that the sealant itself, its 12,5 mm x 75 mm faces horizontal, is directly in the centre of the steel specimen support (5.3).
7.6 Leave in position for (120 ± 1) s and observe the sealant for signs of ignition, hardening, flow and separation.
7.7 At the end of the (120 ± 1) s remove the high temperature laboratory burner (5.1) and allow the specimen to cool to room temperature.
7.8 When cooled, examine the specimen for signs of flow, cracking, flaking hardening ignition and any other effects caused by the flame.
7.9 Record the effects produced by flame treatment.BS EN 14187-7 pdf download.
