探討的施工振搗不密實導致混凝土滲水問題-資料下載頁
2025-01-14 00:49本頁面
【正文】 varieties of cement concrete. ?、呋炷敛捎梅謱訚仓?。7 different layers of the concrete pouring. ⑧加強對商品混凝土現場監(jiān)控力度專人檢測混凝土的坍落度和攪拌時間。Today to strengthen mercial concrete onsite monitoring strength detection of concrete slump and mixing time. ⑨防水混凝土及補償收縮混凝土的養(yǎng)護，嚴重影響結構的抗?jié)B性，特別是早期養(yǎng)護更為敏感。一般養(yǎng)護要注意：Petname ruby waterproof concrete and shrinkage pensating concrete curing, seriously affect the impermeability of structure, especially the early curing is more sensitive. General maintenance should pay attention to: (澆筑后4～6h)，應立即覆蓋雙層草簾或麻袋養(yǎng)護。A. waterproof concrete and hea pensation shrinkage concrete after the final set (4 ~ 6 h after casting), should be covered immediately double hulls or sack of maintenance. ，容易產生溫度裂縫，降低混凝土的抗?jié)B性。B. unfavorable use electric heat curing, easy to produce temperature crack, reduce the permeability resistance of concrete. ，導致混凝土結構抗?jié)B性下降。C. should not be using steam curing, led to the decrease of the permeability resistance of concrete structure. ，避免混凝土表面裂縫。D. waterproof concrete should not be too early to open mold, avoid concrete surface cracks. ，防水泥凝土的原材料可采用預熱法，混凝土的出機溫度不宜大于35℃。E. winter construction, cement preheating method can be used raw materials of concrete, the concrete of the temperature of the machine should not be greater than 35 ℃. 。當采用暖棚養(yǎng)護法時，棚內應保持一定濕度，防止混凝土早期脫水。F. waterproof concrete winter appropriate USES heat storage method of curing. When greenhouses curing method is used, the relative should maintain a certain humidity, prevent concrete early dehydration.
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