THE PLASTIC LIMIT ANALYSIS OF ADHESIVE SHEAR STRENGTH BETWEEN SELF-COMPACTING CONCRETE AND OLD CONCRETE

Under the Mises yield condition, the failure mechanism of the adhesive layer between self-compacting concrete and old concrete is presented in this paper. After the plastic limit analysis of bonding strength, the theoretical formula of upper bound theorem ( ) for adhesive shear strength is deduced. Based on the test result, the main parameter in the formula is also determine, which can help the retrofit design of concrete structures by self-compacting concrete.