| Asphalt Rubber Technology Information Center |
Use of Devulcanized Tire Rubber/Plastic Modified Asphalt Cement in Hot-Mix Asphalt - Final Report for
Phase I
Author(s):
Bahia, Hussain U. and Davies, Robert M.
Origin:
Pennsylvania
Date:
March, 1994
Categories:
Performance
Key Words:
Devulcanized Tire Rubber
Summary:
In this study, the effects of the crumb rubber modifiers manufactured by different processes on the performance-related
properties of selected asphalt cement binders were evaluated. The study focused on crumb rubbers manufactured by
three different processes from whole passenger tires with a maximum particle size of 1.00 mm. Four asphalts that vary
significantly in their physical and chemical properties and that are used widely in the United States and Canada were
included in the study. The properties measured included the performance-related properties selected by the recently
completed Strategic Highway Research Program. The properties included the rheological, failure, and aging properties
that reflect the contribution of asphalt binder to resistance to the major distress modes of asphaltic pavements. The
response variables were measured at different combinations of asphalt source, rubber type, and test temperature. The
main objective of the study was to evaluate the crumb-rubber-based composite manufactured by Tyreplex Corporation
and to assess its value as a modifier for paving-grade asphalt cement.
Phase I
Author(s):
Bahia, Hussain U. and Davies, Robert M.
Origin:
Pennsylvania
Date:
March, 1994
Categories:
Performance
Key Words:
Devulcanized Tire Rubber
Summary:
In this study, the effects of the crumb rubber modifiers manufactured by different processes on the performance-related
properties of selected asphalt cement binders were evaluated. The study focused on crumb rubbers manufactured by
three different processes from whole passenger tires with a maximum particle size of 1.00 mm. Four asphalts that vary
significantly in their physical and chemical properties and that are used widely in the United States and Canada were
included in the study. The properties measured included the performance-related properties selected by the recently
completed Strategic Highway Research Program. The properties included the rheological, failure, and aging properties
that reflect the contribution of asphalt binder to resistance to the major distress modes of asphaltic pavements. The
response variables were measured at different combinations of asphalt source, rubber type, and test temperature. The
main objective of the study was to evaluate the crumb-rubber-based composite manufactured by Tyreplex Corporation
and to assess its value as a modifier for paving-grade asphalt cement.
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