Reinforced concrete (RC) structures are widely used for buildings and infrastructures, this widespread is due to their excellent mechanical properties and durability; considering this widespread use, significant efforts have been dedicated to improving the performance of concrete and determining the bond-slip mechanism, as this mechanism is crucial for analyzing the mechanical properties of RC structures (Zheng, 2023). Current studies have classified the RC bond—slip test methods into two main groups: pullout and beam tests (Zheng, 2023), for the pullout test the specimen used either a prism (Rilem, 1994) or cylinder specimen ( Rehm, 1979), cylinder specimen is used generally in testing the bond mechanism after fire as it provides more uniform stress and heating distributions (Schneider, 1981) (Lubloy, 2017), According to (BS:EN:10080, 2005) standard bond property requirements of ribbed rebar may be determined by appropriate bond tests in Annex C for beam test and Annex D for Pull out test on prism sample, both tests are based on (Rilem, 1994) recommendation with a different formula to calculate bond stress in real structures, but according to (ACI committee 408, 2003) the use of pullout test results as the sole basis for determining development length is unsuitable and recommend the use beam test as it provides a more realistic measure of bond in a real structure, it should be noted that not only the method of test effecting the measured performance of bond but other factors such as bar properties, concrete properties such as compressive strength and type of aggregate, also the additive materials effect the bond strength (ACI committee 408, 2003). At present the research is directed at establishing a relationship between bond strength tests, such as pull-out tests on cylinders, and beam tests using different cement types, such as CEM I 42.5 N , CEM II /A-S 42.5 N or CEM II / B- S 42.5 N, and CEM III / B 32.5 N-LH / SR, and study how the bond strength will be affected by test method and material such as cement types and aggregate types (Quartz, Basalt, light weight aggregate, recycled concrete)