In this study, full factorial design of experiment was
carried out to evaluate the effect of various factors such as
bitumen content, specimen diameter, test temperature and
load duration on the resilient modulus of bituminous paving
mixes. It was observed that all the four factors have negative
effect on the resilient modulus of bituminous paving mixes.
Temperature was found the most significant factor affecting
the resilient modulus of bituminous paving mixes, followed
by load duration and specimen diameter. Most high order
interactions were negligible which corroborates sparsity of
effect principle. In 2-way interaction, diameter–temperature,
diameter-load duration, and load duration-temperature were
significant. The most significant 3-way interaction was
ACKNOWLEDGEMENT AND DISCLAIMER
The authors gratefully acknowledge the support
from the laboratory staff in preparing the samples for the
research study. The contents of this article reflect the views
of the authors who are responsible for the facts and the
accuracy of the data and results presented herein. This is
merely a technical article for the experimental investigation
of factors affecting the resilient modulus of bituminous
paving mixes using Indirect Tension Test. This research
study does not constitute a standard, specification, or a
regulation.
In this study, full factorial design of experiment wascarried out to evaluate the effect of various factors such asbitumen content, specimen diameter, test temperature andload duration on the resilient modulus of bituminous pavingmixes. It was observed that all the four factors have negativeeffect on the resilient modulus of bituminous paving mixes.Temperature was found the most significant factor affectingthe resilient modulus of bituminous paving mixes, followedby load duration and specimen diameter. Most high orderinteractions were negligible which corroborates sparsity ofeffect principle. In 2-way interaction, diameter–temperature,diameter-load duration, and load duration-temperature weresignificant. The most significant 3-way interaction wasACKNOWLEDGEMENT AND DISCLAIMERThe authors gratefully acknowledge the supportfrom the laboratory staff in preparing the samples for theresearch study. The contents of this article reflect the viewsof the authors who are responsible for the facts and theaccuracy of the data and results presented herein. This ismerely a technical article for the experimental investigationof factors affecting the resilient modulus of bituminouspaving mixes using Indirect Tension Test. This researchstudy does not constitute a standard, specification, or aregulation.
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