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American Association of State and Highway Transportation Officials, 2017
Publisher: AASHTO
File Format: PDF
$33.00$66.00
Pages:4
File Size:1 file , 1000 KB
Note:This product is unavailable in Ukraine, Russia, Belarus
This qualitative test method can be used to identify the presence of polyphosphoric acid (PPA) in asphalt binder or residue. If PPA is present in the binder, a blue color is developed in approximately 5 min. The test method is not quantitative, but it can detect PPA at concentrations as low as 0.1 percent. The test method can only determine the presence of phosphorus. It is not specific for the presence of PPA. A positive test result assumes that the phosphorus is from PPA. Any additive that contains phosphorus will give a false positive for the presence of PPA.
This standard was formerly designated as provisional standard TP 78.
Standard Method of Test for Detecting the Presence of Phosphorous in Asphalt Binder
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2016 Errata to Highway Safety Manual, First Edition
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Manual for Bridge Evaluation, 2nd Edition, 2016 Interim Revisions
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Standard Practice for Slurry Seal Design
AASHTO LRFD Bridge Design Specifications, Customary U.S. Units, 7th Edition, 2016 Interim Revisions
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