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公司名称:保定防撞墙模具厂

手机:13313028229

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护栏顶面混凝土分三次进行收面作业
防撞墙混凝土坍落度控制在14±2cm,混凝土采用罐车运输,罐车驶至桥下后,采用龙门吊配合吊斗方式入模,混凝土到现场后先检测塌落度及含气量,符合要求后方可施工。防撞墙混凝土采用分层法进行浇注,每层浇筑厚度不得超过300mm。下料时不得在一个地方集中下料,防止形成起伏不定的界面。浇筑到护栏的倒角位置应暂时停止下灰,待该范围振捣完成后再继续浇筑。分层浇筑间隔时间应不大于混凝土的初凝时间。振捣棒应插入下层50~100㎜,振捣棒与侧模应保持50~100㎜的距离,严禁振捣棒直接接触模板。每一次振捣必须振捣至混凝土停止下沉,不再冒气泡,表面呈现平坦、泛浆时方可提出振捣棒。
The concrete slump of the anti-collision wall shall be controlled at 14 ± 2cm. The concrete shall be transported by tank truck. After the tank truck drives under the bridge, the formwork shall be put into the formwork with gantry crane and bucket. After the concrete arrives at the site, the slump and air content shall be tested first, and the construction can be carried out only when the requirements are met. The anti-collision wall concrete shall be poured by layer method, and the pouring thickness of each layer shall not exceed 300 mm. During blanking, it is not allowed to concentrate blanking in one place to prevent the formation of ups and downs of the interface. The pouring to the chamfering position of the guardrail shall be stopped temporarily, and the pouring shall be continued after the vibration in this range is completed. The interval time of layered pouring shall not be greater than the initial setting time of concrete. The vibrator shall be inserted into the lower layer by 50-100 mm. The distance between the vibrator and the side formwork shall be kept 50-100 mm. It is strictly forbidden for the vibrator to directly contact the formwork. Each vibration must be vibrated until the concrete stops sinking, no more bubbles, and the surface appears flat and full of slurry.
护栏顶面混凝土分三次进行收面作业。混凝土浇注后2~3小时采用木抹进行第一次收面,5~6小时用铁模进行第二次收面,混凝土初凝前完成第三次钢制闸门 钢坝 保定轻钢别墅 保定平面设计培训 保定室内设计培训 保定办公家具  收面作业,收面时重点控制混凝土表面平整度,确保护栏顶面平整,线形顺畅。
The top concrete of guardrail shall be finished in three times. Wood plastering is used for the first finishing within 2-3 hours after concrete pouring, and iron formwork is used for the second finishing within 5-6 hours. The third finishing operation is completed before the initial setting of concrete. During the finishing, the flatness of concrete surface is mainly controlled to ensure that the top surface of guardrail is flat and the alignment is smooth

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  1. 公司名称:保定防撞墙模具厂
  2. 手机:13313028229

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