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天津地铁既有线钢筋混凝土框架结构耐久性评估中需要现场检测评估表层混凝土的渗透性。本文介绍了现场对表层混凝土渗透性的检测,对既有结构混凝土的表层渗透性进行了评价,并通过检测混凝土碳化深度间接验证了渗透性检测结果。
The durability evaluation of Tianjin metro existing railway reinforced concrete frame structure needs on-site inspection to evaluate the permeability of surface concrete. In this paper, the on-site permeability of surface concrete is introduced. The permeability of the existing structural concrete is evaluated. The permeability test result is indirectly verified by testing the carbonation depth of concrete.