遇到易风化的页岩、黏土岩时,应留有()的保护层,待浇筑混凝土前再挖除。A、0.1~0.15m B、0.2~0.3m C、0.4~0.5m ...

作者: rantiku 人气: - 评论: 0
问题 遇到易风化的页岩、黏土岩时,应留有()的保护层,待浇筑混凝土前再挖除。
选项 A、0.1~0.15m B、0.2~0.3m C、0.4~0.5m D、0.5~0.6m
答案 B
解析 新版教材P71考查的是混凝土坝地基的开挖与清理, “(4 ) 遇到易风化的页岩、黏土岩时,应留有0.2-0.3 m 的保护层,待浇筑混凝土前再挖除。

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