BS EN 1790:1998 download free.Road marking materials Preformed roa ad markings.
Introduction
A particular category of road marking materials, used for horizontal signalization, are preformed, i.e. manufactured products in sheet form, ready for use on the road. They can be applied by means of adhesives, pressure or heat, with or without use of a primer. Preformed road marking materials can be lineat; in pieces of a certain length or in rolls. They can also be cut out in the form of symbols or signs or parts of them., making it possible to assemble them on the road to achieve the desired shape.
Most preformed road markings are white or yellow, hut in special cases other colours are used.
Preformed road marking materials can be designed for use as permanent or temporary road markings. When they are used for temporary road markings, and have to be removed afterwards, the specific property of ‘removability can be required.
1 Scope
BS EN 1790 specifies the laboratory requirements for the specific characteristics of, and the corresponding test methods for, new preformed road marking materials intended for pemmnent and temporary use. Most, preformed road marking materials, hereafter referred to as preformed materials”, do not significantly change their properties during application. For those materials the iwrfonnance requirements for road users, in accordance with EN 1436, can be determined in the laboratory, before application on the road.
2 Normative references
BS EN 1790 incorporates l)y dated or undated reference, provisions from other publications. These normative references are cited at the appropriate place in the text and the publwations are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to BS EN 1790 only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies.
EN 1436, Road marking materials — Road ma;*ing peiformance for road use
prEN 1871, Road ‘mal*ing materials — Pkysical pmvpertie-s
EN 1824, Road mam*ing materials — Road trials
3 Definitions
For the purposes of this standard the following definitions apply:
preformed road marking
a factory produced road marking material, in sheet or roll form, capable of being applied to the substrate with adhesive, pressure, heat or a combination of them
3.2
tape
a preformed road marking, capable of adapting itself to the texture of the substrate, which may be precoated with pressure-sensitive adhesive, capable of being stuck to the substrate without heating the material. Photometric, colorimetric and skid resistance characteristics are not significantly modified during application
3.3
preformed cold plastic road marking a preformed road marking made of cold plastic
marking material as defined in prEN 1871, applied to the substrate with the use of an adhesive. Photometric, colorimetric and skid resistance characteristics are not significantly modified during application
3.4
preformed thermoplastic road marking a preformed road marking made of thermoplastic
marking material as defined in prEN 1871, applied to the substrate by heating the material at melting temperature. Preformed thermoplastic road markings may require the application of drop-on materials during application on site
3.5
priming coat or primer
a substance used to improve the adhesion between the preformed road marking material and the substrate
3.6
adhesive
a substance used to bond the preformed road marking
to the substrate
3.7
removable preformed road marking
a preformed road marking capable of being removed,
intact or in large pieces, when required, without
damage to the road surface
4 Requirements
4.1 General
The requirements defrned in 4.2 to 4.7 are valid for testing in the laboratory of all types of while and yellow preformed materials, unless stated otherwise in the text. The minimum requirements on colour; luminance and retroreflection are applicable only to white and yellow.
For preformed thermoplastic and preformed cold plastic materials, the requirements given in prEN 1871 for those types of ;)rodllcts shall also apply.
4.2 Reflection in daylight or road lighting ‘With 11w excel)tlon of sonw preformed thennoplaslic materials (see note) the performance of preformed materials in daylight or road lighting conditions shall be in accordance with EN 1436.
NOTE This measurement is not relevant for preformed thennoplastic materials to which drop-on materials are added during application.
4.5 Skid resistance
With the exception of preformed thermoplastic materials (see note), the skid resistance of preformed materials shall be in accordance with EN 1436.
NOTE This measurement is not relevant for preformed thermoplastic materials because the application can change the perfonnance of the preformed material.
4.6 Removability
Removable prefomied road markings shall be entirely removable without damage to the road surface. The material shall come away from the road surface without leaving permanent coloure(l traces. No deformation or cracking of the road surface shall be present.
NOTE The removal procedure should take place with minimal disturbance to traffic.
4.7 UV resistance for preformed road markings applied without heat
UV resistance shall be checked in accordance with prEN 1871. The luminance factor fi shall be determined before and after the UV ageing.
The preformed materials shall be classified in accordance with Table 3, where fl is the difference between the luminance factor before and after testing.
5 lest methods
5.1 Sampling
Linear prefomied materials shall be sampled as a total length of 5 m of at least 0,15 m wide. The length of each piece shall be not less than 1 in.
For preformed materials cut in symbols, legends or other special shapes, where lengths of at least I m cannot be sampled, an equivalent area of at least 0,75 m2, with a width of 0,15 m and a length suitable for the tests mentioned in 5.2 shall be sampled.
For thermoplastic preformed materials the total mass of the samples taken shall be not, less than 8 kg, taking into account the masses necessaiy for the other propetties to be measured in accordance with prEN 1871, if applicable for the intended use.
The sample shall include relevant quantities of iwhner and/or adhesive, as necessary to allow for the samples to be made in the laboratory in accordance with the manufacturer’s instructions.
The laboratory shall manufacture three samples on aluminium plates at. least 3 nun thick and free from contaminants. Linear samples shall be of 1 m X 0,15 rn; other samples shall approximate as closely as possible to tlwse (htfl4flSi0flS. The application shall be (lone in accordance with the instructions given by the manufacturer.
5.2 Laboratory test methods
Samples prepared as described in 5.1, shall be tested as follows.
The tcst methods described in EN 1436 shall be used to detenuine the following:
—the x,y chroniaticity co-ordinates;
—the luminance coefficient under diffuse illumination
(Qd) or the luminance factor (fi);
—the coefficient of retroreflected luminance (R1j;
—the Skl(l resistance (SRT).
The samples used for the skid resistance testing shall not be used for further testing.
The test methods described in prEN 1871 for the cold plastics or the thermoplastic materials shall he used to determine the corresponding characteristics of the preformed materials.
For tapes, the test method described in prEN 1871 shall be used for UV ageing.
5.3 Removability
The removability of temporary preformed road markings cannot be determined in the laboratory and shall therefore be tested on the road, in accordance with EN 1824.
6 Marking
Preformed materials shall be marked at least with:
a) the number and year of BS EN 1790, EN 1790, and the applicable classes of performance;
b) the manufacturer’s trade mark;
c) the type of preformed road marking;
d) the colour
e) the size and shape;
f) the batch number and date of manufacture; g the intended use of the product (permanent, temporary, substrate types) and any limitations for use of the product.