Study on performance of prestressed concrete hollow slab beams reinforced by grouting with ultra-high performance concrete

To reinforce the inclined web shear crack in the shear span of the prestressed concrete hollow slab beam (PCHSB) on a bridge running for 20 years, a new method of grouting reinforcement was developed. Meanwhile, the grouting material corresponding to this method was developed, so as to improve the shear bearing capacity of prestressed concrete hollow slab. To verify the mechanical performance and reinforcement effect of the strengthened PCHSB,...