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在混凝土凝结硬化的过程中,水泥水化作用释放的热量会集聚在内部不能及时散发,使得混凝土内外温差增大,进而导致因温度应力作用产生混凝土裂缝,所以大体积混凝土施工时对施工连续性要求较高。结合青岛海天中心项目建设实例,通过理论计算得到混凝土的内外温差与通过现场实测得出的温差值相当,从海天中心项目的原材控制、浇筑工艺控制及混凝土的保温养护、温度监控等方面,为大体积混凝土施工提供了有效的质量保证措施。
In the process of concrete condensation hardening, the heat released by the cement hydration will gather in the interior can not be distributed in time, making the temperature difference between the inside and outside of the concrete increase, which leads to the concrete cracks caused by the temperature stress. Therefore, when constructing the mass concrete, Higher requirements. According to the construction project of Qingdao Haitian Center, the temperature difference between the inside and outside of the concrete obtained by theoretical calculation is quite similar to the temperature difference measured by the field test. From the aspects of raw material control, pouring process control, concrete temperature keeping and temperature monitoring of Haitian Center project, For the mass concrete construction provides an effective quality assurance measures.