评估泄漏电流对连接建筑系统中钢筋混凝土的影响

R. Abdollahi
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引用次数: 0

摘要

武装混凝土作为一种有效和安全的德国产品,在工业、商业系统以及系统保护系统中已经使用了50多年。混凝土作为一种合适的基质,如许多潮湿的土壤,如活跃的介质环境。从长远来看,混凝土加速吸湿和稳定的能力使得实施接地电极的任务,特别是对于干燥的地方。多年来,埋设电极在混凝土中的应用已经完全成熟。考虑了处理大电流和防止局部快速升温和爆炸埋入金属导体的混凝土支架的主要问题。然而,新的问题出现了,应该由行业专家来解决。一个新的问题是小电流对钢筋腐蚀的长期影响以及混凝土连接处周围微裂缝的产生。本文对小电流对武装混凝土的长期影响进行了试验研究。试验结果表明,建筑泄漏电流在连接的建筑体系中长期通过,导致混凝土抗压强度降低,混凝土耐久性降低,钢筋混凝土渗透增加。通过钢筋混凝土的流动通道导致混凝土温度升高,从而使其中存在的水蒸发,水蒸气压力使混凝土的空隙渗透到砂土和砂土的边界。此外,混凝土的蒸发也会导致钢筋混凝土的电阻增加。
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Assess the Effects of Leakage Current on Reinforced Concrete in a Connected Building System
Armed concrete has been used as an effective and safe German for over 50 years in industrial, commercial systems, as well as systems protection systems. Concrete acts as a suitable substrate such as many moist soils, such as an active media environment. The ability of the concrete to accelerate moisture absorption and stability, in the long run, makes the task of implementing the earth electrode, especially for dry places. Over the years, the use of the buried electrodes in the concrete has reached full maturity. The primary concerns for dealing with large currents and preventing local rapid warming and blowing up concrete supports of embedded metal conductors have been considered. However, new concerns appeared and should be addressed by industry experts. A new concern is the long - term impact of small currents on rebar corrosion and the creation of micro-cracks around concrete connections. In this paper, the long - term impact of small currents on armed concrete has been tested and tested. Experimental results show that long - term passage of building leakage currents in the connected building system causes compressive strength reduction, reduction of concrete durability and increased penetration of reinforced concrete. The flow passage through the reinforced concrete leads to an increase in the temperature of the concrete and thus the evaporation of the water present in it, and the water vapor pressure causes the penetration of the voids of concrete to the boundary of the sand and sand. In addition, the evaporation of the concrete also leads to an increase in the electrical resistance of the reinforced concrete.
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