Files in this item



application/pdfFHWA-ICT-07-008.pdf (3MB)
(no description provided)PDF


Title:Dynamc Modulus Performance Of Idot Mixtures
Author(s):Carpenter, Samuel H.
Subject(s):Dynamic modulus, stiffness, modulus
Abstract:The dynamic modulus (E*) of hot mix asphalt (HMA) is the currently preferred structural characterization test for use in structural design. This value has been selected for inclusion in the Mechanistic Empirical Pavement Design Guide (MEPDG). With the introduction of Superpave mix designs, the structural properties of mixtures have changed in recent years, and an examination of current stiffness values is required as the Extended Life Hot Mix Asphalt Pavement (ELHMAP) design concepts require stiffness for several different HMA layers in the structure. The use of pre-Superpave modulus values could be inappropriate. Twenty mixtures representing surface and binder mixtures were sampled from the field. These mixtures were selected to cover the spectrum of mixtures and binders and mix designs being used throughout the state. Gyratory samples were compacted to 7 and 4 percent air voids and then prepared for E* testing. Three replicate samples were prepared for each mixture. Testing was conducted at three temperatures (-4 o, 10 o, and 20o C) and frequencies from 0.01 to 10 Hz. Five additional mixtures were added to the testing program. These mixtures were used to construct the ELHMAP sections to be used for response and fatigue testing under full scale loading. The E* data shows that current IDOT mixtures have excellent modulus values which may be higher than the previously used values.
Issue Date:2007-12
Series/Report:FHWA-ICT-07-008 UILU-ENG-2007-2024
Genre:Technical Report
Publication Status:published or submitted for publication
Peer Reviewed:not peer reviewed
Sponsor:Illinois Department of Transportation ICT-R39
Rights Information:No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161
Date Available in IDEALS:2013-11-12

This item appears in the following Collection(s)

Item Statistics