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名称:保定挡土墙模具厂

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首件防撞墙施工后
首件防撞墙施工后,防撞墙混凝土顶面出现了较多的微小裂缝现象,经过分析研究,项目部对防撞墙及波形护栏基础分三次进行收面,混凝土初凝前使用铁摸进行最后一遍压光收面处理,通过收面愈合之前混凝土表层产生的塑性裂缝,收面完成后,混凝土顶面及时覆盖一层塑料薄膜,并对混凝土顶面湿水养护,波型护栏基础混凝土收面时,因工作量较大,收面时间较长,现场在波型护栏基础混凝土顶面以上40cm高度搭设了一道土工布,以减小波型护栏基础混凝土表面温度及风速,减小顶面裂缝现象。通过工艺改进,防撞墙顶面裂缝现象显著减少,混凝土表观质量得到有效控制。
After the construction of the first anti-collision wall, there are many small cracks on the top of the concrete of the anti-collision wall. Through analysis and research, the project department has finished the anti-collision wall and the wavy fence foundation three times. The concrete is treated with the iron touch for the last pressing finish before the initial setting, and the plasticity produced in the concrete surface before the surface is healed. When the surface of concrete is closed, a layer of plastic film is covered on the top of the concrete in time, and the wet water curing of the top of the concrete is carried out. When the concrete of the wave-shaped guardrail foundation is closed, a geotextile is laid at the height of 40 cm above the top of the concrete of the wave-shaped guardrail foundation in order to reduce the wave-shaped protection. The surface temperature and wind speed of the concrete are reduced to reduce the cracks on the top surface. The cracks on the top of the anti-collision wall have been significantly reduced and the apparent quality of concrete has been effectively controlled by technological improvement.

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  1. 名称:保定挡土墙模具厂
  2. 手机:13313028229

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