路面砼施工技术.rar

路面砼施工

⑴模板工程
装模前将监理工程师认可的基层表面上的浮土、杂物予以清除，并进行必要的修整。模板采用钢模板，安装时其强度、刚度、稳定性要满足使用要求，且接缝严密，保证不漏浆，安装后应涂刷隔离剂。在浇筑前，现场技术负责人、施工员、质检员要认真检查是否牢固、几何尺寸是否满足设计要求，验收后方能浇筑砼。模板拆除时，按施工规范的规定由现场技术负责人通知后方可拆除。
⑵砼工程
将铺筑砼的材料至少在28天前通过试验进行混合料组成配合比设计，并将试验单报监理工程师批准。本工程采用搅拌站集中搅拌混凝土，搅拌时要按要求严格控制配合比。砼混合料用自卸汽车运至浇筑现场，自卸汽车应防止漏浆并应防止离析，夏季和冬季施工必要时应有遮盖或保温措施，出料及铺筑时的卸料高度不应超过1.5m，当有明显离析时，应在铺筑时重新拌匀。采用人工摊铺，应用锹反扣，严禁抛掷和耧耙，防止砼拌和物离析。用平板振动器配合排式振捣机振捣，这些机械完全能满足本工程砼的施工要求。每一位置振捣的持续时间应以混合料停止下沉，不再冒气泡并泛出砂浆为准，不宜过振。振捣时辅以人工
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