路面砼施工技術.rar

路面砼施工

⑴模板工程
裝模前將監理工程師認可的基層表面上的浮土、雜物予以清除，并進行必要的修整。模板采用鋼模板，安裝時其強度、剛度、穩定性要滿足使用要求，且接縫嚴密，保證不漏漿，安裝后應涂刷隔離劑。在澆筑前，現場技術負責人、施工員、質檢員要認真檢查是否牢固、幾何尺寸是否滿足設計要求，驗收后方能澆筑砼。模板拆除時，按施工規范的規定由現場技術負責人通知后方可拆除。
⑵砼工程
將鋪筑砼的材料至少在28天前通過試驗進行混合料組成配合比設計，并將試驗單報監理工程師批準。本工程采用攪拌站集中攪拌混凝土，攪拌時要按要求嚴格控制配合比。砼混合料用自卸汽車運至澆筑現場，自卸汽車應防止漏漿并應防止離析，夏季和冬季施工必要時應有遮蓋或保溫措施，出料及鋪筑時的卸料高度不應超過1.5m，當有明顯離析時，應在鋪筑時重新拌勻。采用人工攤鋪，應用鍬反扣，嚴禁拋擲和耬耙，防止砼拌和物離析。用平板振動器配合排式振搗機振搗，這些機械完全能滿足本工程砼的施工要求。每一位置振搗的持續時間應以混合料停止下沉，不再冒氣泡并泛出砂漿為準，不宜過振。振搗時輔以人工
Pavement Concrete Construction

⑴ formwork
Die supervision engineers prior to recognition of the primary surface of the surface dust, debris to be removed, and the necessary trimming. Template using steel formwork, installation of its strength, stiffness, stability to meet the request, and tight joints to ensure no leakage of slurry, the installation should be brushing after the release agent. Before the placement, on-site technical person in charge of the construction staff, quality inspector should carefully check whether solid, geometry meets the design requirements, acceptance can only after pouring concrete. Template demolition, according to the construction specifications provide for on-site technical director be removed after notification.
⑵ Concrete Works
Concrete paving materials will be at least 28 days before the tests Mixture by mix design and test a single report approved by supervision engineer. The project focused on mixing concrete by mixing, stirring mix according to strict control. Concrete mixture transported to the casting with a dump truck on site, dump truck should prevent the leakage of plasma and should prevent segregation, summer and winter, when necessary, have covered the construction or insulation measures, the paving materials and the time of discharge height should not exceed 1.5 m, when there is clear segregation should be re-mix in the pavement. Artificial paving, application of spades Left-hand, non-throwing, and either a rake, concrete mixture to prevent segregation. With the row with the flat type vibrator vibrator vibrators, these machines can meet the requirements of Concrete Construction. The duration of each position should be vibrated mixture to stop sinking, bubbles and glow of mortar no longer subject to risk, should not be too vibration. Vibration when supplemented by artificial
 

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