1、BRITISH STANDARD BS EN 1424:1998 Incorporating Amendment No. 1 Road marking materials Premix glass beads The European Standard EN 1424:1997, with the incorporation of amendment A1:2003, has the status of a British Standard ICS 93.080.20 BS EN 1424:1998 This British Standard, having been prepared und
2、er the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 January 1998 BSI 17 October 2003 ISBN 0 580 29076 X National foreword This British Standard is the English language version of EN 1424:1997, i
3、ncluding amendment A1:2003, published by the European Committee for Standardization (CEN). The UK participation in its preparation was entrusted by Technical Committee B/509, Road equipment, to Subcommittee B/509/2, Horizontal road markings and road studs, which has responsibility to: A list of orga
4、nizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Cor
5、respondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does no
6、t of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promul
7、gate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publica
8、tion Amd. No. Date Comments 14286 17 October 2003 Changes to Clause 2, 4.1, 4.4 and Table 4EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1424 August 1997 + A1 April 2003 ICS 93.080.20 Descriptors: roads, signalling, marking, balls, glass, mixtures, specifications, grain size, classification,
9、quality, defects tolerances, sampling, laboratory tests English version Road marking materials Premix glass beads (includes amendment A1:2003) Produits de marquage routier Microbilles de verre de prmlange (inclut lamendement A1:2003) Straenmarkierungsmaterialien Premixglasperlen (enthlt nderung A1:2
10、003) This European Standard was approved by CEN on 1997-06-20. Amendment A1 was approved by CEN on 2003-01-02. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alte
11、ration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by trans
12、lation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland,
13、Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All ri
14、ghts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1424:1997 + A1:2003 EEN 1424:1997 BSI 17 October 2003 2 Foreword This European Standard has been prepared by Technical Committee CEN/TC 226, Road equipment, the Secretariat of which is held by
15、AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 1998, and conflicting national standards shall be withdrawn at the latest by February 1998. According to the CEN/CENELEC Internal Re
16、gulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and th
17、e United Kingdom. Foreword to amendment A1 This document EN 1424:1997/A1:2003 has been prepared by Technical Committee CEN/TC 226, Road equipment, the Secretariat of which is held by AFNOR. This amendment to the European Standard EN 1424:1997 shall be given the status of a national standard, either
18、by publication of an identical text or by endorsement, at the latest by October 2003, and conflicting national standards shall be withdrawn at the latest by October 2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to i
19、mplement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1S c o p e 3 2 Norma
20、tive references 3 3 Definition 3 4 Requirements 4 5S a m p l i n g 5 6M a r k i n g 6EN 1424:1997 BSI 17 October 2003 3 1 Scope This European Standard specifies the requirements for laboratory tests (production control) and qualification procedures for the premixed glass beads used in road marking m
21、aterials. The requirements taken into consideration in this standard are: granulometry; refractive index of the glass; chemical resistance; quality; surface treatments. This European Standard does not cover the glass beads used as a filler in marking products. 2 Normative references This European St
22、andard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply
23、to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. ISO 565, Test sieves th, perforated metal plate and electroformed sheet Nominal sizes of openings. ISO 2591-1 , Test sieving Part 1: Meth
24、ods using test sieves of woven wire cloth and perforated metal plate. EN 1423:1997/prA1, Road marking materials Drop-on materials Glass beads, antiskid aggregates and mixtures of the two. 3 Definition For the purposes of this standard, the following definition applies: 3.1 premix glass bead transpar
25、ent spherical glass particle used to provide night visibility for road markings by retroreflecting the incident headlight beams of a vehicle towards the driver. These materials are premixed during manufacture into paints, thermoplastics materials, cold hardening plastics and any other marking produc
26、t applied in the liquid state to the road surface. Premix glass beads can also be added to liquid marking materials just before their application to the road surfaceEN 1424:1997 4 BSI 17 October 2003 4 Requirements 4.1 Granulometry The granulometry of premix glass beads shall be described by giving
27、the minimum and the maximum percentages by mass of the cumulative retained premix glass beads on metal wire cloth test sieves: ISO 565 sizes R 40/3 using the test sieving procedure defined in ISO 2591-1. Granulometries shall be described by selecting the sieves in accordance with the following rules
28、 (see Table 1): the upper safety sieve shall retain 0 % of the total mass of the premix glass beads; the upper nominal sieve shall retain 0 % to 10 % of the premix glass beads; if necessary, intermediate sieves shall be added to limit the ratio between the nominal sizes of openings of two successive
29、 sieves to a maximum of 1,7:1; for each of the intermediate sieves, the range by mass between the minimum N 1and the maximum N 2of the cumulative retained percentages shall be not more than 40 % (N 2 p N 1 k 40); the lower nominal sieve shall retain 95 % to 100 % of the premix glass beads. Table 1 S
30、electing sieves for premix glass beads Examples of the interpretation of the rules to specify the granulometry of premix glass beads are given in Table 2 and Table 3. Table 2 Fine grading Table 3 Medium grading The granulometry of the premix glass beads shall be determined in accordance with ISO 259
31、1-1. Sieves: ISO 565 R 40/3 Cumulative retained mass % Upper safety 0 Upper nominal 0 to 10 Intermediate N 1to N 2 Lower nominal 95 to 100Sieves: ISO 565 R 40/3 Cumulative retained mass m% 425 0 300 0 to 10 250 0 to 30 150 40to80 90 80to100 53 95 to 100 Sieves: ISO 565 R 40/3 Cumulative retained mas
32、s m% 1 180 0 1 000 0 to 10 850 5 to 20600 45 to 85 355 95 to 100 EN 1424:1997 BSI 17 October 2003 5 4.2 Refractive index When determined in accordance with Annex A of EN 1423, the refractive index n of the premix glass beads shall conform with the following classes: Class A: n U 1,5; Class B: n U 1,
33、7; Class C: n U 1,9. 4.3 Resistance to water, hydrochloric acid, calcium chloride and sodium sulfide When tested in accordance with Annex B of EN 1423, the premix glass beads shall not develop any surface haze or dulling when in contact with any of the following: water, hydrochloric acid, calcium ch
34、loride and sodium sulfide. 4.4 Quality requirements When tested in accordance with EN 1423 Annex D (reference method), glass beads with imperfections as described in Annex C of EN 1423, shall be considered defective. Using the reference method, and taking into consideration only one defect per bead,
35、 the maximum weighted percentage of defective premix glass beads shall be 20 % for premix glass beads with a diameter lower than 1 mm and 30 % for premix glass beads with a diameter equal to or greater than 1 mm, in both cases including a maximum of 3 % of grains and foreign particles (see Table 4).
36、 If a granulometry includes beads with diameters lower than 1 mm and diameters equal to or greater than 1 mm they shall be separated by means of a sieve with nominal sizes of openings of 1 mm and checked separately. Table 4 Maximum weighted percentage of defective premix glass beads 4.5 Surface trea
37、tments of premix glass beads Special coatings can be applied to the surface of the premix glass beads to enhance their properties. When the manufacturer states the presence of a coating it shall be proved by testing the premix glass beads in accordance with a test method agreed between the supplier
38、of the premix glass beads and the specifying authority. 5 Sampling In order to test premix glass beads, a representative sample of the material to be tested shall be taken as follows. When M, in kilograms, is the mass of the material to be tested, at least 1,5 kg of the material shall be taken by in
39、serting an appropriate probe in the full height of a certain number S of bags in an upright position, or inserting the probe S times in the whole height of an Intermediate Bulk Container (IBC). S is calculated by the formula: S = ; and it shall be rounded up to the next higher unit. The material sha
40、ll be taken from at least three bags or one IBC. A representative sample shall be obtained by mixing the material taken with the S insertions of the probe in the bags. The representative sample shall be split using a 1/1 splitter into the number of samples necessary for the tests. NOTE A test probe
41、can be constructed from a tube of 28 mm to 34 mm diameter and 1 000 mm to 1 200 mm in length. The end of the probe which reaches the bottom of the bag should be fitted with a plugging system. After penetration of the probe to the full depth of the bag, the plug is inserted and the probe removed. The
42、 contents of the probe represent a single sample of the material to be tested. Diameter of glass beads Maximum weighted percentage of defective glass beads a Maximum weighted percentage of grains and foreign particles mm % % 1 20 3 U1 30 3 a When alternative test methods are used as in Annex H (info
43、rmative) of EN 1423:1997, the correlated values shall be applied. In a situation of dispute, the method described in Annex D (normative) of EN 1423:1997 shall be the reference method. M/150EN 1424:1997 6 BSI 17 October 2003 6 Marking Each container shall be clearly marked in accordance with European
44、 specifications. The manufacturer of the premix glass beads shall make available at least the following information: number and year of this European Standard, EN 1424:1997; identification of the product and of the manufacturer; the batch number and the production date; the presence of a coating and
45、 its intended use; the net mass; the upper and the lower nominal sieves of the granulometry. blankBS EN 1424:1998 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on st
46、andards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quali
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