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Please use this identifier to cite or link to this item: http://hdl.handle.net/11299/135177

Title: Investigation of Low Temperature Cracking in Asphalt Pavements National Pooled Fund Study – Phase II
Authors: 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
Keywords: Low temperature cracking
Asphalt mixtures
Asphalt binders
Fracture properties
Thermal stresses
Temperature fatigue
Fatigue (Mechanics)
Strength of materials
Creep properties
Contraction (Thermodynamics)
Thermal expansion
Materials at high or low temperatures
Pavement cracking
Issue Date: Aug-2012
Publisher: Minnesota Department of Transportation
Series/Report no.: MnDOT 2012-23
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.
URI: http://purl.umn.edu/135177
Appears in Collections:Research Reports

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