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Title: STATISTICAL DISTRIBUTION OF FAILURE STRESS VALUES FROM SUPERPAVE (REGISTERED TRADEMARK) DIRECT TENSION TEST
Accession Number: 00936057
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: A statistically robust method was developed using the Weibull distribution to identify and eliminate outliers from the failure stress determinations. The method is applicable to any failure stress data set that follows the Weibull distribution; however, in this application, it was developed for the AASHTO standard test method for conducting the direct tension test (DTT). A large number of stress-at-failure measurements with the DTT were made in the course of instructing users of this device. These data, all for the same asphalt, provided the means for studying the nature of the distribution of the breaking strength of these asphalt specimens. The training database contains more than 900 data points. The current AASHTO practice of eliminating the lowest two stress values was found to be reasonable. However, it is an arbitrary method that may lead to problems in the future. On the basis of the results of this study, the procedure is recommended for use and implementation in the next AASHTO version of the DTT standard.
Supplemental Notes: This paper appears in Transportation Research Record No. 1810, Bituminous Binders 2002.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Dongre, RAntle, CPagination: p. 72-77
Publication Date: 2002
Serial: ISBN: 0309077362
Features: Figures
(3)
; References
(2)
; Tables
(3)
TRT Terms: Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials
Files: TRIS, TRB
Created Date: Jan 3 2003 12:00AM
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