Test study on strengthening RC flexural members with grouting material

The technology of strengthening RC structures with grouting material is a new type of reinforcement techniques in the field of construction reinforcement in recent years. Considering the reduction of the strength and stiffness of flexural members in RC structures due to steel corrosion, this paper simulated steel corrosion artificially and then reinforced with grouting material to study the grouting material reinforcement effect of corroded RC flexural members. Based on the test of 3 beams and 2 slabs, failure characteristics and their effects on the ultimate bearing capacity and stiffness of corroded RC flexural members strengthened with grouting material were researched and analyzed. The result shows that grouting material reinforcement can observably improve RC bending members´ flexural behavior and supporting capacity, meanwhile enlarge structural stiffness to put off the appearance of cracks and inhibit the expansion and extension of cracks. The research results are of great value in the practical design.