AASHTO T250-05 pdf free download

AASHTO T250-05 pdf free download.Thermoplastic Traffic Line Material.
1.2.16. Section 18. Ultraviolet Light and Condensate Exposure:
1.2.17. Section 19. Hardness; and
1.2.18. Section 20. Flash Point.
1.3. The values stated in SI units are to be regarded as the standard.
Note 1—’arning: Due to the elevated temperatures used in these tests and the nature of the material, extreme care should be used when working with the thermoplastic materials. Use heat-resistant gloves and safety glasses or face shield when handling in the fluid state. Severe burns can result from spilled thermoplastics or mishandled equipment. Should melted thermoplastic come in contact with the skin, do not attempt to wipe off. Immediately hold or submerge the atiected area under cold water. Inform someone in the immediate vicinity that an accident has occurred. Seek proper medical attention.
2. REFERENCED DOCUMENTS
2.1. AASIITO Standards:
• M 92, Vire-Cloth Sieves for Testing Purposes
• M 231, Weighing Devices Used in the Testing of Materials
• M 247, Glass Beads Used in Pavement Markings
• M 249, White and Yellow Reflective Thermoplastic Striping Material (Solid Form)
I T 248, Reducing Samples of Aggregate to Testing Size
2.2. ASTi’I! Standards:
• D 36/D 36M. Standard Test Method for Sofkning Point of Bitumen (Ring-and-Ball
Apparatus)
• D 92, Standard Test Method for Flash and Fire Points by Cleveland Open Cup Tester
• D 256. Standard Test Methods for Determining the Izod Pendulum Impact Resistance of
Plastics
• D 792. Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics
by Displacement
• D 2240, Standard Test Method for Rubber Property—Durometer Hardness
• D 4764. Standard Test Method for Determination by X-ray Fluorescence Spectroscopy of
Titanium Dioxide Content in Paint
B D 4796, Standard Test Method for Bond Strength of Thermoplastic Traffic Marking Materials
• D 4797, Standard Test Methods for Gravimetric Analysis of Vhite and Yellow Thermoplastic
Traffic Marking
• D 4960, Standard Test Method for Evaluation of Color for Thermoplastic Traffic Marking
Materials
• E 313, Standard Practice for Calculating Yellowness and Whiteness Indices from
Instrumentally Measured Color Coordinates
• E 1349. Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using
Bidirectional (45°:0° or 0°:45°) Geometry
• G 154-06. Standard Practice for Operating Fluorescent Light Apparatus for UV Exposure of
Nonmetallic Materials
3.2.2.1. Randomly select three 22-kg (50-tb) bags from the lot to be sampled (up to 22 000 kg (50 000 lb)).
3.2.2.2. Place the selection of cardboard, wood, or metal on a level section of floor.
3.2.2.3. Empty the contents of one of the 22-kg (50-tb) bags onto the sample area. Using the metal scoop, mix the material, breaking up any large lumps. Shape the pile of thermoplastic into as high a pile as possible, forming a symmetrical inverted cone.
3.2.2.4. Take the metal splitting device and center it over the apex of the thermoplastic. Lower the device onto the material, thus splitting it into four quarter sections.
3.2.2.5. Take the material from any two opposing quarters and return it to the thermoplastic bag. The two remaining quarters are to he mixed and split in the same manner as explained above, rotating between the two quarters that are retained at the end of each step. Repeat the process for a total of four times. Retain the final two opposing quarters as a part of the composite sample and place in the unlined 3.8-I. (1-gal) can.
3.2.2.6. Perform the same procedure as outlined using the two remaining bags. Vhen the final quarters are taken from the two bags, the sum of the three bags should till the 3.8-L (I-gal) sample container and should weigh between 4 and 4.5 kg (9 and 10 Ib).AASHTO T250-05  pdf download.