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在CP110和BS5400设计规范中,规定了钢筋砼和部分予应力钢筋砼构件在使用极限状态下的最大容许裂纹宽度。限制开裂宽度对钢筋防锈的作用究竟有多大,这个问题目前尚未得到解决。然而,将砼构件的开裂限制到最小,有着显著的好处。减小砼开裂的方法之一是:用一种具有与砼类似的弹性性能,而破坏应变大大超过砼极限应变的材料来增强砼表面,这样,砼的开裂受到面层的约束,裂纹宽度会减小。适用于这种面层的材料
In the CP110 and BS5400 design specifications, the maximum allowable crack widths for reinforced concrete and partially prestressed reinforced concrete members are specified in the service limit state. What is the effect of limiting the cracking width on the rust resistance of steel bars? This issue has not yet been resolved. However, minimizing the cracking of the crucible components has significant advantages. One of the methods to reduce the cracking of the crucible is to strengthen the crucible surface with a material with elastic properties similar to that of crucible, and the failure strain greatly exceeds the ultimate strain of the crucible, so that cracking of the crucible is constrained by the surface layer and the crack width will be Decrease. Material suitable for such a surface layer