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Technical requirements

Technical requirements
Technical requirements
 1. GENERAL PROVISIONS

1.1. Scope and Applicability

This standard specifies the technical requirements, test methods for materials with thermoplastic road marking paint domestically produced or imported used on asphalt pavement, concrete or paved (with plastic float to the surface) by spraying, push presses or push bar.

Note: 3 thermoplastic road marking paints mentioned in this standard are classified according to three methods of construction.

Type I Injection

Type II Push presses

Type III Gath

 

1.2. Reference Standards

This standard was compiled on the basis of reference standard AS4049, 3-1994. "Paints and related materials - Road marking materials. Part 2: Thermoplastic road marking materials"

1.3. The term is mainly used in the standard

1.3.1. Aggregate - granular mineral content such as calcium carbonate, quartz, or silicon used to make ice blocks for thermoplastic road marking paint.

1.3.2. Resin - A thermoplastic resins (even with oil or plasticizers) creates adhesion to the road surface and create cohesion between the different components (fillers, botmau, and aggregate particles glass).

1.3.3. Fillers - A powder is added to the mixture components, creating dispersion of pigments and created a number of properties for mixed material.

1.3.4. Illumination - light ratio of the reflective surface in a given direction than the surface glow of diffused white light ideal when viewed under the same lighting huongva the same way, by percentage (%).

1.3.5. Heating temperature safety - To be specified depending on the manufacturer, never heated above that temperature materials.

1.3.6. Pigment - A fine solid powders dispersed in the paint environment to color paint.

1.3.7. Reflective properties - is characteristic of glass beads have abilities reflective the incoming light..

1.3.8. Thermoplastic road marking paint - materials including aggregates, pigments, binder, fillers and glass beads. Applications can flow when heated and solidifies when cooled, is used as a signal line bar.

2. TECHNICAL REQUIREMENTS

2.1. Material Composition

2.1.1. The percentage composition

The percentage composition of thermoplastic road marking material

Table 1

Materials

Content (%)

Test Methods

Resin

20 2

Section 3.2.

Glass beads

20 min *

Section 3.3.

As the pigment aggregate fillers and glass beads

80 2

 

 

* Maintain at least 20% by weight of glass beads even in the case of glass beads be coated on the surface of the material.

2.1.2. Size inorganic materials - 100% of the aggregate, pigments, fillers and glass beads must go through clinical trials hole size of 2.8 mm.

2.1.3. The Reflective - Give The glass beads in the thermoplastic road marking paint to create the contrast Glory in paint and mixed types are specified in the relevant standard (eg AS 2009).

Notes:

1. With thermoplastic road marking paint not use glass beads on the surface, the government can not Initial reflective properties. The glass beads used on painted surfaces to generate high optical department well first kind, defined in the relevant standard (eg AS.2009).

2. Using glass beads on the surface than commonly mixed in paint form is likely to increase due to the intensity reflective material.

2.2. Technical requirements of materials thermoplastic road marking

2.2.1. Color - When the prototype was processed under Section 3.1. the paint color bar

sugar (judged by the naked eye under natural light TCVN 2102-1993) was divided as follows:

White - Equivalent Y35 classified by the Australian Standard - AS 2700S; equivalent whiter than white or titanium oxide used as road marking paint.

Yellow - Yellow letter (equivalent to Y12 - y14 - classified by AS 2700S).

2.2.2. The light

2.2.2.1. White Material - The material glows white when prepared according Section 3.1 and Section 3.4 of experiment will not be less than 75%.

 

- Eflective shells scattered on the surface helps to get the reflective paint original. After a period of use, the surface abraded paint, reflective particle layer will disappear. At this reflective effect will be created by the reflective particles are mixed in paint 

3. Prepare the test place

 

Must clean surface area to paint. The old road markings exist must be stripped before. Road surface must be free of oil, grease, moisture, temperature must reach 7 degrees C or higher. Do not apply when surface temperature is less than 3 ° C (above dew point).

 

For concrete pavement, first coated plastic liner to enhance the adhesion of road markings. For other types of road surfaces can also use resin lining to ensure adhesion. 

 

4. Classification of materials

This standard considering 3 road markings materials as required 3 different construction methods

together.

Type I Injection

Type II Push presses

Type III Gath

5. Preparation Materials

When preparing material to note the following points:

(a) Avoid heating the safe heating temperature of the thermoplastic material. The loss of color and brittleness may occur if the temperature exceeds the value specified by the manufacturer.

(b) thermoplastic materials must be constructed within 6 hours after the temperature reached using.

(c) After heating devices are preliminary, the material is brought into the process at ensuring sustained mechanical stirring convenient.

6. Create reflective material

When you need to create the original reflective material, solid glass beads have been used ± 75g / m  right on the surface of the thermoplastic material has constructed with a minimum rate of 3252 according to (AS.2009) .7. Method of application

The material can be constructed by molding, brushed, machining shape, or create hinhtruoc material. The following table indicates the thickness of the material commonly used materials tuytheo line up materials and construction methods.

The construction method for thermoplastic road marking

The material

thermoplastic

method

construction

use

purpose

Thickness (mm)

The smallest

The largest

By Resin synthetic resins

 

 

 

 

Brushing

Manual or automatic machine

Horizontal bar and icons

2

5

puff

automatic machine

vertical bar

2

3

Pressing push

automatic machine

vertical bar

2

5

Outsourcing shape

automatic machine

vertical bar

3

10

Materials preforming

Manual

vertical bar symbol

2

4

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