2568667

AASHTO T 377-22

Standard Method of Test for Detecting the Presence of Phosphorous in Asphalt Binder

standard by American Association of State and Highway Transportation Officials , 2022

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Full Description

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.

 

Product Details

Published:
2022
Number of Pages:
5
File Size:
1 file , 270 KB
Note:
This product is unavailable in Ukraine, Russia, Belarus
 

Document History

  1. AASHTO T 377-22

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    Standard Method of Test for Detecting the Presence of Phosphorous in Asphalt Binder

    • Most Recent

  2. AASHTO T 377-17 (2021)


    Standard Method of Test for Detecting the Presence of Phosphorous in Asphalt Binder

    • Historical Version

  3. AASHTO TP 78-09 (2013)


    Standard Specification for Detecting the Presence of Phosphorous in Asphalt Binder

    • Historical Version