University of Illinois Urbana-Champaign

Dynamc Modulus Performance Of Idot Mixtures

Carpenter, Samuel H.

Content Files
FHWA-ICT-07-008.pdf

Permalink

https://hdl.handle.net/2142/45990

Description

Title
Dynamc Modulus Performance Of Idot Mixtures
Author(s)
Carpenter, Samuel H.
Issue Date
2007-12
Keyword(s)
Dynamic modulus, stiffness, modulus
Date of Ingest
2013-11-12T21:46:20Z
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.
Series/Report Name or Number
FHWA-ICT-07-008 UILU-ENG-2007-2024
ISSN
0197-9191
Type of Resource
text
Genre of Resource
Technical Report
Language
en
Permalink
http://hdl.handle.net/2142/45990
Sponsor(s)/Grant Number(s)
Illinois Department of Transportation ICT-R39
Copyright and License Information
No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161

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Research and Publications - Illinois Center for Transportation PRIMARY