| 混凝土排水渠模具的制品成品 |
| 添加时间：2020/11/23 15:59:50 浏览次数： |
| 混凝土排水渠模具的制品成品制成之后的养护，养护期间须经常保持湿润，不能暴晒和风干。当混凝土达到设计强度25%一30%时即可切缝，以切缝边不出现过太毛茬为宜。角隅处要注意对混凝土的震捣，必要时甚至可加设钢筋，对流水槽下基础变化地段，可采取另加钢筋网片的加固设计。控制拌制混凝土所用原材料，特别是水泥的技术指标，要符合相应标准要求。混凝土振捣时，注意那些易产生不密实的部位的振捣；防止发生过振产生的混凝土分层。以及施工浇注中防止混凝土振动开裂等特殊问题。 After the finished products of concrete drainage channel mold are made, they must be kept moist during the curing period, and can not be exposed to the sun and air drying. When the concrete reaches 25% - 30% of the design strength, the joint can be cut, and it is appropriate that there is no too rough stubble on the edge of the cut joint. Attention should be paid to the vibration of concrete at the corner. If necessary, reinforcement can be added. In the section of foundation change under the convection flume, additional reinforcement mesh can be used. The raw materials used for mixing concrete, especially the technical indexes of cement, should be controlled to meet the requirements of corresponding standards. During concrete vibration, attention should be paid to the vibration of those parts which are easy to produce non compaction, and to prevent the concrete stratification caused by excessive vibration. In addition, some special problems such as the prevention of concrete vibration cracking in construction pouring are also discussed. |
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