题目内容 (请给出正确答案)
提问人:网友f******g 发布时间:2022年4月5日 21:20
[多项选择题]

圬工梁拱劣化:混凝土裂缝达到下面()可评定为A1级劣化。

A.钢筋混凝土梁裂缝宽度0.3-0.5mm

B.预应力梁纵向裂缝宽度0.2-0.3mm或封端混凝土开裂

C.混凝土拱圈横、斜向裂缝宽度达0.3mm,纵向裂缝宽度>0.5mm

D.框构裂缝宽度>0.5mm

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