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公司名称:防撞墙模具,防撞墙钢模具,风电基础模具-保定厂家价格

手机:13313028229

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防撞墙混凝土坍落
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.

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  1. 公司名称:防撞墙模具,防撞墙钢模具,风电基础模具-保定厂家价格
  2. 手机:13313028229

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