Industry Reports

Report No.	IP67(jot this number down to order)
Title	Comparison of Laboratory Test Performance Between Asphalt-Rubber Hot Mix and Dense Graded Asphalt Concrete
Author(s)	Souse, Jorge; Pais, Jorge & Stubstad, Richard
Publisher	RPA/Consulpav
Pub. Date
Pages	12 pages
Keywords
Description	Asphalt-Rubber Hot-Mix has shown a higher resistance to flexural and reflective fatigue cracking, and also to permanent deformation, than conventional Dense Graded Asphalt Concrete. Experience has demonstrated that with ARHM, a significant reduction in overlay thickness is possible, especially in cases where the existing pavement is cracked. This paper reports the efforts done on behalf of the RPA to develop a mechanistic design method to quantify the rehabilitation performance ARHM and DFAC mixes. Based on the results of widely available performance related tests, such as flexural fatigue, repetitive simple shear, wheel track, and permanent deformation tests, combined with traditionally adopted mechanistic-empirical modeling tools, equivalency factors in terms of required overlay thickness have derived.
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