الفهرس 
Factors affecting bond between steel and concreteOnly 14 pages are availabe for public view
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Abstract
This work has been carried out in Faculty of Engineering, Minoufiya
University, Arab Republic of Egypt. It was supervised by Professor Dr.
Mounir Mohamed Kamal and Dr. Mohamed Abdel Aziz Safaan.
The author wishes to express his sincere gratitude to Professor Dr.
Mounir Mohamed Kamal, Professor of Strength and testing of Materials,
Faculty of Engineering, Minoufiya University for his valuable advises and
comments during the preparation of the thesis. And thank him deeply for
his indispensable help, great encouragement and valuable suggestions and
advices, without which this study could not have been accomplished.
The author wishes also to express special appreciation and gratitude to
Dr. Mohamed Abdel Aziz Safaan, Lecturer, Faculty of Engineering,
Minoufiya University for his great assistance in all the stages of this
research work.
Finally, the author would like to express deep appreciation and
deep thanks to her family for giving the chance and time and pushing her
for preparing this research and above all, and humbly express my thanks to
God, Whose bounty, grace, and gifts are innumerable.
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ABSTRACT
This study is concerned with the bond behavior between reinforcing
steel and concrete because bond between the reinforcing steel and concrete
one is of the fundamental properties that governs the monolithic behavior
of reinforced concrete elements under different loading conditions. Any
Improvement in bond is expected to improve the structural behavior under
loading conditions.
Previous investigations concerning the nature of bond between steel
and concrete and the main factors affecting it are reviewed.
The experimental tests carried out in this work included testing of
reinforced concrete beams cast using different types of concrete mixes.
Two types of concrete reinforced with fibers (Harix and Polypropylene)
beside plain concrete as a reference mix were used. The current
experimental research work focused on a proposed system for the
enhancement of tension lap splices in reinforced concrete beams. The
proposed system ensures the continuity through transferring the tension
force in one bar to another by bearing and bond stresses. Although all bars
are spliced at the same section at mid- span. In this system, the effect of
different variables such as the splice lengths and use of bond studs with
different shapes on the behavior of reinforced concrete beams was studied.
For this purpose, a comprehensive experimental research program
consisting of casting and testing 15 reinforced concrete rectangular beams
was conducted. Splice lengths were 20 and 40 times the reinforcing bar
diameter. Two different studs, shapes of the bond studs were used
( V and L) shaped studs. The height of bond studs was selected to be 5 cm
for different studs shape. The proposed technique significantly improved
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the behavior of reinforced concrete beams with lap splices and it is highly
recommended to be used wherever the required tension lap splices in the
design codes can not be achieved.
Keyword: Lap Splice, Bond, Splices length, Fiber Reinforcement.