01482102

Monograph

http://www.trb.org/Main/Blurbs/168888.aspx

The idea of performing strength tests at low temperature on asphalt mixture and asphalt binder beam specimens with the Bending Beam Rheometer (BBR) is investigated in this project. The first part of this report provides a review of the theory of strength size effect for quasibrittle materials. The theory is then used in the analysis part of the research to evaluate and extrapolate the experimental results and to compare the results obtained with different strength tests. From the experimental work and statistical modeling, it can be concluded that strength tests can be performed on asphalt binders and asphalt mixtures with a modified BBR. Cooling in air appears to be the best option for storing and testing both binders and mixtures. Size effect theory can then be used to manipulate and extrapolate experimental data to stress fields that are independent of specific specimen size and geometry used.

This NCHRP-IDEA investigation was conducted by the University of Minnesota. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

NCHRP IDEA Project 151

English

0000-0001-8331-4504

46p

2012-12

NCHRP-IDEA Program Project Final Report

Final Report

Web

Figures; References; Tables

Asphalt mixtures; Beams; Bituminous binders; Low temperature tests; Rheometers; Strength of materials; Test procedures; Testing equipment

Highways; Materials; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

May 23 2013 10:26AM