发布时间:2025-01-21 04:52:04
坍落度是根据现场施工部位不同,由施工单位向搅拌站申请的,一般为申请数值±20mm,如你申请的为120,则120±20mm都算合格,反之不合格。
最近室内顶棚有点滴水,可室外刚做了防水不久,有谁能帮我找一下原因和给一下解决方法
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