1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Road marking materials - Conditions for removing/masking road markingsPD CEN/TR 16958:2017TECHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CEN/TR 16958 December 2017 ICS 93.080.20 English Version Road marking mate
2、rials - Conditions for removing/masking road markings Produits de marquage routier - Conditions pour le retrait/masquage des marquages routiers Straenmarkierungsmaterialien - Bedingungen fr das Entfernen/Abdecken von Strassenmarkierungen This Technical Report was approved by CEN on 14 March 2016. It
3、 has been drawn up by the Technical Committee CEN/TC 226. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
4、 Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de
5、 la Science 23, B-1040 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TR 16958:2017 ENational forewordThis Published Document is the UK implementation of CEN/TR 16958:2017.The UK participation in its preparation was
6、 entrusted to Technical Committee B/509, Road equipment.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The Br
7、itish Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 92274 9ICS 93.080.20Compliance with a British Standard cannot confer immunity from legal obligations.This Published Document was published under the authority of the Standards Policy and Strategy Committee on 31 J
8、anuary 2018.Amendments/corrigenda issued since publicationDate Text affectedPUBLISHED DOCUMENTPD CEN/TR 16958:2017TECHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CEN/TR 16958 December 2017 ICS 93.080.20 English Version Road marking materials - Conditions for removing/masking road markings Pro
9、duits de marquage routier - Conditions pour le retrait/masquage des marquages routiers Straenmarkierungsmaterialien - Bedingungen fr das Entfernen/Abdecken von Strassenmarkierungen This Technical Report was approved by CEN on 14 March 2016. It has been drawn up by the Technical Committee CEN/TC 226.
10、 CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Polan
11、d, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2017 CEN All rights of ex
12、ploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TR 16958:2017 EPD CEN/TR 16958:2017CEN/TR 16958:2017 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Criteria for selecting removal or/and mask
13、ing procedure . 4 5 Removal methods and masking materials . 6 5.1 Removal methods 6 5.2 Masking materials . 7 6 Performance requirements . 8 6.1 Removal works. 8 6.1.1 General 8 6.1.2 Test methods 8 6.1.3 Table of performance requirements 9 6.1.4 Environmental prescriptions 10 6.2 Masking 10 6.2.1 G
14、eneral . 10 6.2.2 Test methods . 11 6.2.3 For visual aspects . 11 6.2.4 For changes on surface properties 11 6.2.5 Requirements 11 7 Other works 11 7.1 Removal and masking road studs 11 7.2 Wet paint markings . 11 7.3 Cleaning/renovation of line markings . 12 7.4 Removal of concrete curing membranes
15、 . 12 Annex A (informative) Methods for removing road markings . 13 A.1 General . 13 A.2 Removal through clean water 13 A.3 Removal through metallic technologies 15 A.4 Others . 19 A.5 Execution of work 19 Annex B (informative) Photographic references . 20 Annex C (informative) Assessing the damage
16、to the pavement after the removal of road markings 21 C.1 Introduction . 21 C.2 Raveling . 21 C.3 Grooving 23 Bibliography . 25 PD CEN/TR 16958:2017CEN/TR 16958:2017 (E) 3 European foreword This document (CEN/TR 16958:2017) has been prepared by Technical Committee CEN/TC 226 “Road equipment”, the se
17、cretariat of which is held by AFNOR. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. There are many situations in which road marking removing or mask
18、ing become necessary. This document is intended to give some guidance about how to proceed in these cases. This Technical Report (TR) describes a number of methods for removal and masking and gives guidance for the appropriate selection. Not all methods are valid or recommended in all cases; some me
19、thods are limited by the kind and nature of existing road marking and the pavement surface. Also the cost of the operation is depending on the amount of marking to be removed. In some countries these operations are regulated, in particular in some countries masking the existing road marking only wit
20、h black paint is forbidden. The quality of the removal or masking or any combination of them, may be not enough or result in a new “phantom line”, which, under particular illumination conditions, may be more visible than the real road markings (introducing confusion) or may change the surface textur
21、e (introducing hazard). Works shall be done in such a way that the risk for confusion or hazard for drivers be minimized. Furthermore, recommendations are given for some frequent works such as: removing and masking road studs, removing wet paints, removing curing membranes in new cement concrete pav
22、ements and cleaning existing road markings. PD CEN/TR 16958:2017CEN/TR 16958:2017 (E) 4 1 Scope This document provides guidance for removal or/and masking existing road markings. It includes methods of removal and criteria for selecting the removal method, as well as the requirements for the masking
23、 materials and the performance requirements of the resulting surface. It does not apply to removable temporary road markings, which shall be removed in accordance to the manufacturer instructions. Some recommendations are given for removing and masking road studs, removing wet paints, removing curin
24、g membranes in new cement concrete pavements and cleaning existing road markings. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For unda
25、ted references, the latest edition of the referenced document (including any amendments) applies. EN 1436, Road marking materials - Road marking performance for road users EN 1824, Road marking materials - Road trials EN 13197, Road marking materials Wear simulator Turntable EN ISO 2813, Paints and
26、varnishes - Determination of gloss value at 20, 60 and 85 (ISO 2813) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 removal permanent elimination of road markings, that may be partial or complete 3.2 masking temporary hiding of existing road
27、 marking using a topcoat of a material similar in color, luminance and specular gloss, to the pavement surface 3.3 phantom line shadow line road marking or print resulting from removal or masking process 3.4 specular gloss ratio of the luminous flux reflected from an object in the specular direction
28、 for a specified source and receptor angle to the luminous flux reflected from a glass with a refractive index of 1,567 in the specular direction 4 Criteria for selecting removal or/and masking procedure There are situations in which existing road marking shall be obliterated so as to not function a
29、s a recognizable road marking (phantom line). In order to do it, Removal or Masking techniques may be used. Removal may be done totally or partially and masking may be done as the unique procedure or PD CEN/TR 16958:2017CEN/TR 16958:2017 (E) 5 after a partial removal. In order to take the good decis
30、ion it is also important to know if the obliterated road marking shall be renewed or not and if the surface will be repaved or not. Table 1 gives a guidance to apply these criteria. Table 1 null Guidance for removal/masking procedures in different situations Situations for removal or masking Removal
31、/masking criteria Removal Masking Work needed Road marking renewal is foreseen? Totally Partially Only After partial removal 1 2 3 4 Permanent change on the road marking lay out NOT A YES Only in some cases NO Only in some cases Preparation of the substrate YES B YES YES NO NO Hiding road marking on
32、 temporary basis YES or NOT C YES YES with masking YES YES When a road marking has to be applied and removed after a short period of time, (for instance less than 6 months) removable temporary materials, in accordance to EN 1824, shall be used. Removal of such removable temporary materials shall be
33、done in accordance to the manufacturer instructions. For each case, some criteria are given in the following: A.1 When permanent changes in road markings lay out occurs (as for instance. new exits/entrances from main road, exchange from continuous line to interrupted line, direction of arrows, etc);
34、 unwanted road markings should be totally removed. A.2 When the existing road marking has poor adhesion or is covering less than 70 % of the marked area; partial removal can be accepted. The removal processing shall not adversely damage the pavement surface. There are limits (see Clause 6.1.2) for c
35、hanges in surface texture and grooving and for the residual road markings. If damage to the pavement exceeds the limits, then for a complete obliteration of the road marking, a complementary masking with a blend of bitumen and fine aggregate may be used to minimize the difference in level and appear
36、ance. A.3 When permanent changes in road marking occur; unwanted road marking shall never be obliterated by masking. A.4 Same comments as in A.2. B.1 Existing road markings (formed for one or several layers) that have lost adhesion to the pavement or inter- layers (more than 30 % of the marked area
37、is affected) shall be totally removed before renewal. PD CEN/TR 16958:2017CEN/TR 16958:2017 (E) 6 B.2 Existing multilayer road markings not fulfilling with the essential requirements (EN 1436) may be renewed with a new layer whenever the resulting thickness of the whole multilayer system does not ex
38、ceed 6 000 microns. If this thickness is exceeded they shall be partially removed. The resulting surface shall be compatible (chemically) with the new material; otherwise the existing road marking should be totally removed or treated with a primer. Existing structured road markings which have to be
39、renewed with another structured pattern shall be fully or partially removed. The thickness extent will depend on the patterns of the existing and the renewed structure. B.3 Masking is not accepted for preparing surfaces before renewal. Primers may be used in order to improve the adhesion and compati
40、bility conditions of the existing substrate with the new material, but it cannot be considered a masking material. B.4 Partial removal followed of a masking is not a recommended procedure for preparing substrate for road marking renewal, with the exception mentioned in B.3 in the case of the applica
41、tion of a primer could be considered convenient. C.1 In case of temporary hiding without subsequent renewal (because of changes in the lay out) and without repaving; a total removal should be done. C.2 In case of temporary hiding with subsequent renewal: Total removal is recommended but partial remo
42、val may be used in combination with masking. Removal is necessary when the existing road marking is a structured road marking Comments given in A.2 are applicable. C.3 In case of temporary hiding with subsequent renewal or repaving: When the thickness of the existing road marking is lower than 3 000
43、 microns and the number of layers less than 3, just masking may be used. C.4 In case of temporary hiding with subsequent renewal: When the thickness is higher than 3 000 microns or there are more than 3 layers; totally removal is recommended but partial removal and masking may be allowed. 5 Removal
44、methods and masking materials 5.1 Removal methods The selection of the most efficient method to remove road markings depends on the type of road marking material and on the type of pavement surface. Table 2 gives a list with the most common types of removal methods. A more detailed description of ea
45、ch of the removal methods listed in Table 2 may be found in Annex A. The selection shall take into account if the removal has to be done totally or partially and in which extent. The selection will take also into account thickness of the existing road marking and the nature and texture of the paveme
46、nt surface. The complete removal (with not more than a 5 % of old marking particles remaining) means also removal of material in between the aggregates at the surface. The more important issue is the grade of aggregate (stone) loss or “surface grooving” upon marking removed from asphalt surfaces. Re
47、moval road marking formed by a multilayer system, thermoplastics and/or cold plastics will, in consequence, require a more aggressive removal process than removal of an old, worn, paint. Moreover, PD CEN/TR 16958:2017CEN/TR 16958:2017 (E) 7 removal thermoplastic is recommended to be done at low temp
48、eratures (at cooler seasons and at night better than during hot and sunny days). Table 2 null List of removal methods all types of pavement and all types of road marking materials Removal methods 1 PeelJetting 2 Waterblasting 3 High Pressure Water 4 Low Pressure Water 5 Shot peeling (steel ball) 6 R
49、otating metallic disc 7 Grinding or Scrabbling 8 Bush Hammer 9 Sand Blasting 10 Chemical marking 11 Synthetic media system 12 Heat lance It is obvious that an old (more worn) material, will give less impact than a new durable marking. Furthermore, it is clear that a hard concrete surface is less depending on a gentle removal technology than open porous asphalt. Methods 6; 7; 8 are not recommended others than for partial removal, unless strong concrete surface or sealing component. 5.2 Masking materials Masking of existing road marking only may be used on temporary bas
