AASHTO T 51 pdf free download
AASHTO T 51 pdf free download.Ductility of Asphalt Materials.
I. Scope
1.1 This test method describes the procedure tr determining the ductility of a bituminous material measured by the distance to which it will elongate before breaking when two ends of a briquct specimen of the material, of the form described in Section 4, are pulled apart at a specified speed and at a specified temperature. Unless otherwise specified, the test shall he made at a temperature of 25 ± 0.5°C and with a speed of 5 cm/mm ± 5.0 %. At other temperatures the speed should he specified.
1.2 Because of the large number of methods fbr obaining test samples. it is impractical to discuss specific products in this test method. Refer to individual product specifications for guidance in obtaining a test sample.
1.3 The values stated in SI units are to be regarded as the standard. Values in parenthesis in inch-pound units are provided for informational purposes only.
1.4 Warning—Mercury has been designated by EPA and many state agencies as a hazardous material that can cause central nervous system. kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA’s website (http://www.cpa.gov/mercury/faq . htm) for additional i nformation. Users should be aware that selling mercury or mercury containing products, or both, in your state may be prohibited by state law.
1 .5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitatio,i.s prior to use.
2. Referenced Documents
2. 1 ASTM Standards: 2
C 670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
D 5 Test Method for Penetration of Bituminous Materials 1) 1754 Test Method for Effects of Heat and Air on Asphaltic Materials (Thin-Film Oven Test)
D 2872 Test Method for Effect of Heat and Air on a Moving Film of Asphaft (Roiling Thin-Film Oven Test)
E I Specification for ASTM Liquid-in-Glass Thermometers E II Specification for Wire Cloth and Sieves for Testing Purposes
E 77 Test Method for Inspection and Verification of Thermometers
E 220 Test Method for Calibration of Thermocouples By Comparison Techniques
E 644 Test Methods for Testing Industrial Resistance Thermometers
3. Significance and Use
3.1 This test method provides one measure of tensile properties of bituminous materials and may be used to measure ductility for specification requirements.
4. Apparatus
4.1 Mold—The mold shall be similar in design to that shown in Fig. 1. The mold shall be made of brass. 10.0 ± 0.1 mm thick, the ends b and b’ being known as clips, and the parts a and a’ as sides of the mold, with a brass base plate that is larger than the assembled mold. The dimensions of the assembled mold shall be as shown in Fig. I with the permissible variations indicated.
4.2 Water Ba a for Conditioning Specimens—A water bath capable of maintaining the specified test temperature, varying not more than 0.5°C (0.9°F) from this temperature.’ The specimen shall be immersed and supported such that it is surrounded by water.AASHTO T 51 pdf download.
