首页> 外国专利> PROCESS FOR REHABILITATING INTERNALLY REINFORCED CONCRETE BY REMOVAL OF CHLORIDES

PROCESS FOR REHABILITATING INTERNALLY REINFORCED CONCRETE BY REMOVAL OF CHLORIDES

机译:通过去除氯化物使内部钢筋混凝土恢复原状的过程

摘要

A process for rehabilitation of internally reinforcedconcrete which comprises the temporary application of anadherent coating of an electrolytic material to surfaceareas of the concrete. Distributed electrode means,preferably a wire grid, is embedded in the adherent coat-ing. Voltage sufficient to develop a current of about 1-5amps/m is applied between the reinforcement and thedistributed electrode, to cause migration of chloride ionsfrom the concrete into the electrolytic coating. When thechloride content of the concrete has been reduced to adesired level, the voltage is discontinued and the electro-lytic coating and distributed electrode are removed. Ahighly preferred material for the adherent electrolyticlayer is cellulosic pulp, premixed with water or othersolution (such as calcium hydroxide) in a nozzle andsprayed onto the surface of the area being treated.Desirably, the distributed electrode is formed of a ferrousmaterial reactive with chlorine, to minimize the release offree chlorine gas into the ambient. Particularly fortensioned reinforcement, the process monitors polarizationof the tensioned steel to prevent hydrogen embrittlement.
机译:内部加固的修复过程具体包括临时应用电解材料在表面的粘附涂层混凝土的区域。分布式电极装置最好是线栅,嵌入在粘附涂层中ing。足以产生约1-5电流的电压安培/米适用于钢筋和分布电极,导致氯离子迁移从混凝土变成电解涂料。当。。。的时候混凝土的氯化物含量已降低到所需的水平,电压中断,电去除溶解涂层和分布式电极。一种粘附电解的高度首选材料层是纤维素浆,与水或其他预混合喷嘴中的溶液(例如氢氧化钙)和喷在待处理区域的表面上。期望地,分布式电极由亚铁形成。与氯具有反应性的物质,以最大程度地减少氯的释放释放出氯气进入环境。特别是对于张紧钢筋,过程监控极化张紧钢以防止氢脆化。

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