1、BRITISH STANDARD BS 7962:2000 Incorporating Amendment No. 1 Black materials for masking existing road markings Specification ICS 93.080.20 BS 7962:2000 This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the
2、authority of the Standards Committee and comes into effect on 15 April 2000 BSI 16 July 2004 The following BSI references relate to the work on this British standard: Committee reference B/509/2 Draft for comment 99/104002 DC ISBN 0 580 33129 6 Committees responsible for this British Standard The pr
3、eparation of this British Standard was entrusted by Technical Committee B/509, Road equipment, to Subcommittee B/509/2, Horizontal road markings and road studs, upon which the following bodies were represented: British Coatings Federation Ltd. British Glass Manufacturers Confederation County Surveyo
4、rs Society Department of the Environment, Transport and the Regions (Central Transport Group) Department of the Environment, Transport and the Regions (Highways Agency) Institution of Civil Engineers Institution of Highways and Transportation Retro-reflective Equipment Manufacturers Association Road
5、 Safety Marking Association Amendments issued since publication Amd. No. Date Comments 15104 16 July 2004 Revision of 4.2BS 7962:2000 BSI 16 July 2004 i Contents Page Committees responsible Inside front cover Foreword ii Introduction 1 1S c o p e 1 2 Normative references 1 3 Terms and definitions 1
6、4 Procedure for testing 1 5 Requirements 2 6 Marking 3BS 7962:2000 ii BSI 16 July 2004 Foreword This British Standard has been prepared by Subcommittee B/509/2. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.
7、 Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 3 and a back cover. The BSI copyright notice displayed in this document indicates when the document
8、 was last issued.BS 7962:2000 BSI 16 July 2004 1 Introduction Black masking materials are required to cover existing permanent road markings, on a temporary basis at road works, in order to provide clear and unambiguous horizontal signalization to drivers. Black masking materials are thermoplastic,
9、paint, tapes or other materials. Black masking materials may be removable or non-removable. 1 Scope This British Standard specifies the performance requirements for black materials used for masking existing road markings on asphalt road surfaces. Application methods are not covered by this standard.
10、 Suppliers are required to provide comprehensive application instructions including the use of equipment, primers etc. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this British Standard. For dated referenc
11、es, subsequent amendments to, or revisions of, any of these publications do not apply. For undated references, the latest edition of the publication referred to applies. BS EN 1436:1998, Road marking materials Road marking performance for road users. BS EN 1824, Road marking materials Road trials. B
12、S 3900-D5, Methods of test for paints Optical tests on paint films Part D5: Measurement of specular gloss of non-metallic paint films at 20 , 60 and 85 . 3 Terms and definitions For the purposes of this British Standard the following terms and definitions apply. 3.1 luminance factor ratio of the lum
13、inance of a body to that of a perfect reflector or transmitting diffuser, identically illuminated 3.2 skid resistance frictional force between tyre and road masking material available to oppose skidding 3.3 specular gloss ratio of the luminous flux reflected from an object in the specular direction
14、for a specified source and receptor angle to the luminous flux reflected from glass with a refractive index of 1,567 in the specular direction 4 Procedure for testing 4.1 Laboratory tests Black masking materials shall initially undergo laboratory tests in accordance with 5.1, 5.2 and 5.3. The labora
15、tory shall prepare samples of black masking materials applied to aluminium plates of at least 3 mm thickness and free from contaminants.BS 7962:2000 2 BSI 16 July 2004 4.2 Road performance trials Black masking materials shall undergo road performance trials on a site which conforms to the test site
16、criteria specified in BS EN 1824. The duration of the road trials for black masking materials shall be approximately three to four months. NOTE There may be practical benefits from arranging the road trials at the same location, and to commence at the same time as road trials for other road marking
17、materials. Materials shall be applied, in accordance with the suppliers instructions, to cover three existing white markings; or a) permanent centre lane line markings; or b) transverse road trial line markings which conform to the relevant performance classes of BS EN 1436 following exposure to tra
18、ffic. NOTE A 1 m section of each transverse road trial line marking is to be covered with black masking material placed centrally between the centre line and the edge line of the inside lane. The tests of the black masking materials, following exposure to traffic, defined in 5.1, 5.2, 5.3 and 5.4, s
19、hall be made in situ. 5 Requirements 5.1 Luminance factor and colour 5.1.1 General The luminance factor and the chromaticity shall be measured using the measuring method specified in BS EN 1436:1997, Annex C. 5.1.2 Luminance factor Black masking materials shall have an initial luminance factor of no
20、 greater than 0.06, and a retained value following exposure to traffic of no greater than 0.06. 5.1.3 Colour Black masking materials, both when new and following exposure to traffic, shall conform to Table 1. Table 1 Chromaticity region for black masking materials 5.2 Skid resistance The skid resist
21、ance of black masking materials, expressed in SRT units, shall be measured with a skid resistance tester according to the measurement method in BS EN 1436:1997, Annex D. Black masking materials shall have an initial skid resistance of not less than 45, and a retained value following exposure to traf
22、fic of not less than 45. 5.3 Specular gloss The specular gloss of black masking materials shall be determined using the test methods specified in BS 3900-D5. Measurements shall be taken at the 85 geometry only. Black masking materials shall have an initial value for specular gloss of no greater than
23、 4, and a retained value following exposure to traffic of no greater than 4. NOTE The values given for specular gloss may be revised when more experience of using this test method with black masking materials has been gained. Coordinates Corner points 1234 x 0.385 0.300 0.260 0.345 y 0.355 0.270 0.3
24、10 0.395BS 7962:2000 BSI 16 July 2004 3 5.4 Removability NOTE Requirements for removability apply only to preformed materials defined as removable. Preformed black masking materials shall be capable of being removed from the road surface, either intact or in large pieces, in such a way that no damag
25、e, deformation or cracking occurs to the surface of the carriageway, and no permanent residual marks remain after their removal. 6 Marking Each package containing black masking material shall be marked with the following information: a) a reference to this standard; b) the manufacturers name and tra
26、de name; c) the type of black masking material and whether removable or non-removable; d) the quantity, size or shape; e) the batch number; f) the intended use and any limitations on use.BS 7962:2000 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent na
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