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Title: DYNAMIC MODULUS OF ASPHALT CONCRETE WITH A HOLLOW CYLINDER TENSILE TESTER
Accession Number: 00931978
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: A hollow cylinder tensile tester (HCT) has recently been shown to be a suitable surrogate test device for the Superpave (Registered trademark) indirect tension test. The feasibility of using the HCT to obtain the dynamic modulus of asphalt concrete was explored. Previous studies have shown the dynamic modulus of asphalt concrete in tension and compression to be similar at low temperatures and high loading frequencies and that minor differences can be expected at higher temperatures and lower loading frequencies. Here, the HCT device compared favorably with dynamic modulus measurements obtained with uniaxial compression testing apparatus at 0 deg C and 20 deg C. In addition, test results were found to be in reasonable agreement with the Witczak dynamic modulus predictive equation. The ability to simply and rapidly measure the creep compliance, tensile strength, and dynamic modulus of bituminous paving mixtures over a range of temperatures and loading conditions makes the HCT device a useful general-purpose mixture analysis tool. It appears that this portable device may serve as a practical method to satisfy testing requirements for high reliability (Level 1) pavement designs in the forthcoming American Association of State Highway and Transportation Officials (AASHTO) 2002 design guide being developed under National Cooperative Highway Research Program (NCHRP) Project 1-37A for the mitigation of both fatigue cracking and thermal cracking. However, a broader experimental program, including tests at higher temperatures and a broader range of test frequencies, is needed to fully validate the compatibility of HCT measurements with NCHRP Project 1-37A models.
Supplemental Notes: This paper appears in Transportation Research Record No. 1789, Bituminous Paving Mixtures 2002.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Buttlar, W GBauer, J MSherman, D SPagination: p. 183-190
Publication Date: 2002
Serial: ISBN: 0309077141
Features: Figures
(2)
; Photos
(3)
; References
(17)
; Tables
(4)
TRT Terms: Identifier Terms: Uncontrolled Terms: Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials
Files: TRIS, TRB
Created Date: Oct 4 2002 12:00AM
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