Any other thermometric device of equal accuracy may be used.Ĭapable of making the required measurements to an accuracy of at least 0.001g.Ħ00 mL or larger Griffin low-form beaker.įreshly boiled and cooled distilled or deionized water. The stoppered pycnometer shall have a capacity of 24 to 30 mL and shall weigh not more than 40 g.Ĭonstant-temperature, capable of maintaining the temperature within 0.1☌ of the test temperature.Ĭalibrated liquid in glass, total immersion type, of suitable range with graduations at least every 0.1☌ and a maximum scale error of 0.1☌. The height of the concave section shall be 4.0 to 18.0 mm at the center. The top surface of the stopper shall be substantially plane and have no chips, and the lower surface shall be concave to allow all air to escape through the bore. The stopper shall be provided with a hole 1.0 to 2.0 mm in diameter, centrally located in reference to the vertical axis. Glass, consisting of a cylindrical or conical vessel carefully ground to receive an accurately fitting glass stopper 22 to 26 mm in diameter. RELATIONSHIP BETWEEN TEMPERATURE AND SPECIFIC GRAVITY OF BITUMEN: Source: Construction Materials for Civil Engineers by Errol Van GRADES ACCORDING TO RELATIVE DENSITY OF BITUMEN: From Oil Refineries (this is the major source of bitumen in Pakistan).īitumen is usually characterized in the following three types of grades.Extracted from Limestone and Sandstone (procedure adopted in USA).The specific gravity of semi-solid bituminous material, asphalt cements, and soft tar pitches shall be expressed as the ratio of the mass of a given volume of the material at 25 ☌ to that of an equal volume of water at the same temperature.īitumen is generally obtained from the following three sources Thus, it is possible for a quantitative extraction of mineral impurity in bitumen. In case bitumen contains mineral impurities the specific gravity will be higher.Bitumen binder has specific gravity in the range of 0.Specific gravity is also used in identifying the source of bitumen binder.Bitumen weights sometimes have to be converted into volumes for asphalt concrete mix design calculations for which a knowledge of specific gravity is essential.Specific gravity of a bitumen binder is a fundamental property frequently required as an aid in classing binders for use in paving jobs.This test method covers the determination of the relative density and density of semi-solid bituminous materials, asphalt cements, and soft tar pitches by use of a pycnometer. For heavy accumulations use a brush to loosen grease and oil, then rinse.SPECIFIC GRAVITY TEST ON BITUMINOUS MATERIALS For cleanup applications, spray on to a thoroughly wet surface, allow 5 minutes contact time, and hose off with water under pressure. It may also be used to remove accumulations of grease, tar and asphalt on engines, machine parts, etc. This product is used undiluted to perform common asphalt extractions. ATR HI-FLASH may be used in a lab as directed by AASHTO T164. It emulsifies instantly in water, leaving behind a residue-free surface. ATR HI-FLASH quickly dissolves and liquefies the toughest mixtures, delivering fast and accurate test results. ATR HI-FLASH is an extremely aggressive solvent, has a pleasant citrus odor, and yet still exhibits a TCC flashpoint of 145✯. Unlike traditional extraction solvents, Ecolink’s ATR HI-FLASH offers the best features of a low flashpoint solvent in a high flashpoint blend. This blend of environmentally preferred ingredients introduces a completely new approach to asphalt extraction.
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