大体积混凝土施工技术

Construction Technology of Mass Concrete

桥梁结构大体积混凝土,因水泥水化热引起混凝土结构内外温差、温度控制不到位,降温失温过快,导致体积收缩比例不均匀,表面产生细微到明显的裂缝,同时可能逐步发展成为贯穿且较宽的严重裂缝,对混凝土结构功能造成较大折减,承载力明显下降,严重降低结构耐久性.

For the mass concrete of bridge structure,due to the cement hydration heat,the internal and external temperature difference and temperature control of the concrete structure are not in place,and the temperature loss is too fast,which leads to uneven volume shrinkage ratio,subtle to obvious cracks on the surface,and may gradually develop into serious cracks that run through and are relatively wide,which will greatly reduce the function of the concrete structure,significantly reduce the bearing capacity,and seriously reduce the durability of the structure.