水泥螺丝现浇钢筋混凝土多久可以打膨胀螺丝
栏目:水泥螺丝 发布时间:2019-10-29 23:04
也可直接点“搜索资料”搜索整个问题   展开全部混凝土强度达到设计值一般需28天,故建议膨胀螺栓在28天后施工较妥当,�过早打膨胀螺栓可能影响其锚固强度(力)。追问工程比较急,我想7天之后就开始

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