T 170-2000

Standard Method of Test for Recovery of Asphalt from Solution by Abson Method


 

 

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标准号
T 170-2000
发布日期
2000年01月01日
实施日期
2010年09月21日
废止日期
中国标准分类号
/
国际标准分类号
/
发布单位
AASHTO - American Association of State Highway and Transportation Officials
引用标准
6
适用范围
This method covers the recovery@ by the Abson Method@ of asphalt from a previously conducted extraction with reagent-grade trichlorethylene or reagent-grade methylene chloride (Note 1). The asphalt is recovered with properties substantially the same as those it possessed in the asphalt mixture and in quantity sufficient for further testing. The values stated in SI units are to be regarded as the standard. 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 limitations prior to use. Note 1??Trichloroethylene conforming to ASTM D 4080-96 or technical grade methylene may be used@ but it is recommended that for each new supply of the solvent a blank should be run on an asphalt of known properties. In case of dispute@ reagent grade should be used. Blank Determinations??Introduce about 70 g of asphalt into a 2000-mL flask; add about 800 mL of solvent to dissolve the asphalt@ allow the solution to stand for about four hours; concentrate the solution by distillation to about 200 mL and then recover the asphalt. (Total elapsed time@ from when the solvent is added to the time the recovery test is completed is about seven hours.)




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