الفهرس 
MIX DESIGNOnly 14 pages are availabe for public view
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Abstract
Lap splice in R.C Beams are the most commonly used to connect steel reinforcement in different elements in structures and usually the least expensive one. Lapped splice transfers the force from one bar to the other through the surrounding concrete by bond, and simultaneously over to the other bar of the splice. The integrity of the lapped splice depends on the development of adequate bond along the surface of the bars on the ability of the concrete around the two bars to transfer shear without disintegration or excessive deformation.
The behavior of reinforced light weight concrete beams was tested experimentally and theoretically evaluated in this study. The variables studied in this research were the splice length and the position of the tension lap splice.Six light-weight reinforced concrete beams consisting of simple beams 3000mm between two support with cantilever 500mm and with cross section (400*150)mm were tested in experimental program using lap splices in the positive and negative bending moments. The loading system was designed specially to study the behavior of LWRC with tension lap splices. The beams were cast with 10mm bars in the bottom and top positions (at positive and negative bending moments). The test results including deflection behavior, crack pattern , failure mode, longitudinal steel strain and bond stresses are presented and discussed.
Ten light-weight reinforced concrete beams (LWRC) were tested in the theoretical test using finite element analysis through (ANSYS 14.0) program. The same experimental beams with the same variables used in the theoretical program with one more beam with different lap splice length at the negative bending moment. The same test results presented in the experiments were the same as in the theoretical program. The results show good agreement between the experimental and theoretically studies.