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Title: Effect of Polyphosphoric Acid on Asphalt Binder Properties
Accession Number: 01363328
Record Type: Component
Availability: Find a library where document is available Abstract: The use of modified asphalt binders has grown tremendously in the United States. This is due primarily to the increased stress on the highways from higher traffic volumes and heavier loads. Many different modifiers have been used to improve the binder properties to better meet specifications. These modifiers include both organic and inorganic material such as styrene butadiene (SB), styrene-butadiene-styrene (SBS), ethylene terpolymer, and polyphosphoric acid (PPA). Concerns have been raised by several highway agencies about the actual performance characteristics of the last polymer, PPA. These concerns include reversibility of the stiffening effect of PPA on asphalt binders and interactions with other additives in the mix such as hydrated lime. This paper evaluates the effect of PPA on several different binders from different crude sources. The evaluation also includes the use of PPA in combination with other modifiers such as SBS polymer and hydrated lime. Binder testing was done on the control neat binders and modified systems so that comparisons could be made between them.
Monograph Title: Monograph Accession #: 01363314
Language: English
Authors: D'Angelo, John APagination: pp 27-39
Publication Date: 2012-1
Serial: Conference:
Workshop on Polyphosphoric Acid Modification of Asphalt Binders
Location:
Minneapolis Minnesota, United States Media Type: Digital/other
Features: Figures; References; Tables
TRT Terms: Uncontrolled Terms: Subject Areas: Highways; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials
Files: TRIS, TRB
Created Date: Feb 23 2012 9:06AM
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