الفهرس 
Factors Influencing the Performance of PavementOnly 14 pages are availabe for public view
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Abstract
The practical experiences of Egyptian highway network are showing that high percentage
of roads are suffering from fatigue, creep and rutting of asphalt mixtures in long term.
These distresses may be occurred due to the shortage in the mechanistic properties of
either of the binder and/or the asphalt mixtures as well as the increasing of traffic loads.
Until now, the research about suitable additive and new techniques to produce maximum
technical and economic HMA continues.
This study aims to investigate the performance of Hot Mix Asphalt (HMA) mixtures
that modified using steel fiber and compare them with conventional mix in order to
prevent the earlier damage and failure. For this aim an experimental program was
designed and implemented. Six HMA mixtures having different steel fiber content of
0.25%, 0.5%, 0.75%, 1%, 1.25%, 1.5 % by aggregate weight of HMA as well as control
mixtures were prepared.
In this study, the steel fibers were chosen as additive in hot asphalt mixtures for its good
tensile strength, durability, ductility, stiffness and flexural properties. Besides, the
bonding strength of interface between steel fiber and asphalt concrete.
Marshall and indirect tensile strength (ITS) tests were used to examine the different hot
asphalt mixes performance. The tests were carried out on binder samples which have 3D
aggregate gradation (binder surface HMA) according to AASHTO T 245 standards and
Egyptian code .The scope of the study included studying the performance of both
unmodified and modified mixtures by steel fibers.
The results of the investigations indicated that the a.