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四川省内江地区某县食品公司肉联厂500t单层冷库,于1980年8月动工修建。它以钢筋混凝土框架结构承重,采用钢筋混凝土预制倒槽板作顶板,砖墙围护结构。内分冻结间和冷藏间。1981年8月降温投产。 1984年初该厂反映,发现冻结间顶板有冻酥剥落现象,但落下的混凝土块只有手指头般大小,也不厚。起初认为是冻结间的冻融循环较频繁造成的。 1984年10月,笔者到现场观测时,见顶板因剥落而呈现斑斑点点,轻轻试敲顶板即穿
A 500t single-story cold storage plant of a meat company of a county food company in the Neijiang area of Sichuan Province started construction in August 1980. It is supported by a reinforced concrete frame structure, using precast reinforced concrete slabs as roofs, and brick wall containment structures. Within the frozen and cold rooms. In August 1981, it was put into production. At the beginning of 1984, the factory reported that it was found that there was a phenomenon of frostbite peeling in the frozen roof, but the falling concrete block was only the size of a finger and was not thick. Initially, it was thought that the freeze-thaw cycle between freezes was caused more frequently. In October 1984, when the author went to the scene to observe, see the roof plate was spotted due to spalling, gently try to knock the top plate to wear