Prediction of shear strength of reinforced concrete slab strengthened with ultra-high-performance concrete

Reinforced concrete (RC) structures repaired and strengthened with ultra-high-performance concrete (UHPC) have shown significant effectiveness in improving the load-bearing capacity in experimental studies. However, calculation methods for RC structures reinforced with UHPC are still very limited. This paper presents methods for predicting the load-bearing capacity of UHPC-RC structures based on the application of existing design standards. Four methods are proposed based on existing standards used to calculate the shear capacity of structures, and the predicted results are compared with the experimental results from previous studies. This confirms that the proposed methods based on existing design standards can predict the load-bearing capacity of UHPC-RC structures with high accuracy.