When HRB500 steel bars used as stirrup, the reinforced concrete beam may appear so oversized diagonalcrack that it can't satisfy the engineering requirements for applicability and durability.
应用HRB500钢筋作为抗剪箍筋，可能会出现过宽的斜裂缝而不能满足结构的适用性和耐久性的要求。
2
Diagonal and horizontal crack usually appears in the top layer wall of masonry structures building during construction and initial stages of using.