Abstract:Using C35 concrete as the main raw material, the specimens of corroded concrete continuous beams are designed and produced to analyze the influences of the factors, such as the reinforcement method of prestressed steel strand mesh, the applying of prestressing value, and the spacing of steel strands on the mechanical properties of crack width and bearing capacity of the reinforced corroded concrete continuous beams. The mechanical properties of corroded concrete continuous beams of the specimens are analyzed and tested by using the LTH400-10000LB pressure testing machine. The experimental results show that after using the X-shaped prestressed steel strand mesh reinforcement method, the crack width of corroded concrete continuous beams has decreased. The increase of the spacing between steel strands will lead to an increase in strain of corroded concrete continuous beams, that is, an increase in the degree of deformation of corroded concrete continuous beams. The proper increase of prestressing of steel strand mesh can enhance the bearing capacity of corroded concrete continuous beams. When the prestressing is increased from 1 100 kN to 1 400 kN, the maximum bearing capacity of the specimen can increase from 190 kN to 240 kN. The more severe the corrosion of reinforced concrete continuous beams after reinforced, the larger the mid span deflection value, and the greater the degree of deformation after applying loads.
