Investigation of Low Temperature Cracking in Asphalt Pavements National Pooled Fund Study – Phase II
Marasteanu, Mihai
Buttlar, William
Bahia, Hussain
Williams, Christopher
Moon, Ki Hoon
Teshale, Eyoab Zegey
Falchetto, Augusto Cannone
Turos, Mugurel
Dave, Eshan
Paulino, Glaucio
Ahmed, Sarfraz
Leon, Sofie
Braham, Andrew
Behnia, Behzad
Tabatabaee, Hassan
Velasquez, Raul
Arshadi, Amir
Puchalski, Sebastian
Mangiafico, Salvatore
Buss, Ashley
Bausano, Jason
Kvasnak, Andrea
Buttlar, William
Bahia, Hussain
Williams, Christopher
Moon, Ki Hoon
Teshale, Eyoab Zegey
Falchetto, Augusto Cannone
Turos, Mugurel
Dave, Eshan
Paulino, Glaucio
Ahmed, Sarfraz
Leon, Sofie
Braham, Andrew
Behnia, Behzad
Tabatabaee, Hassan
Velasquez, Raul
Arshadi, Amir
Puchalski, Sebastian
Mangiafico, Salvatore
Buss, Ashley
Bausano, Jason
Kvasnak, Andrea
2012-08
Title
Investigation of Low Temperature Cracking in Asphalt Pavements National Pooled Fund Study – Phase II
Published Date
2012-08
Publisher
Minnesota Department of Transportation
Type
Report
Abstract
The work detailed in this report represents a continuation of the research performed in phase one of this
national pooled fund study. A number of significant contributions were made in phase two of this comprehensive
research effort. Two fracture testing methods are proposed and specifications are developed for selecting mixtures
based on fracture energy criteria. A draft SCB specification, that received approval by the ETG and has been taken
to AASHTO committee of materials, is included in the report.
In addition, alternative methods are proposed to obtain mixture creep compliance needed to calculate thermal
stresses. Dilatometric measurements performed on asphalt mixtures are used to more accurately predict thermal
stresses, and physical hardening effects are evaluated and an improved model is proposed to take these effects into
account. In addition, two methods for obtaining asphalt binder fracture properties are summarized and discussed.
A new thermal cracking model, called "ILLI-TC," is developed and validated. This model represents a
significant step forward in accurately quantifying the cracking mechanism in pavements, compared to the existing
TCMODEL. A comprehensive evaluation of the cyclic behavior of asphalt mixtures is presented, that may hold the
key to developing cracking resistant mixtures under multiple cycles of temperature.
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Department of Civil Engineering, University of Minnesota; University of Illinois; University of Wisconsin; Iowa State University
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