CAJ | 학술논문

采用混凝土模拟孔隙液和各种钢筋不同连接组合,模拟了钢筋在混凝土结构内部钝化、活化、腐蚀等多个阶段的电池腐蚀行为.根据参比电极扫描采集的电极电位数值曲线,分析了各种钢筋及其不同连接方法对其宏电池腐蚀的影响,并从混凝土结构耐久性的角度对各种钢筋连接方式的优缺点进行了评价.结果表明:在有电连接的钢筋骨架中宜使用同种钢筋(化学成分相同);现阶段应该优先选用同厂家生产的HRB400钢筋;受条件限制而必须采用不同钢筋时,宜采用绝缘连接方式.
채용혼응토모의공극액화각충강근불동련접조합,모의료강근재혼응토결구내부둔화、활화、부식등다개계단적전지부식행위.근거삼비전겁소묘채집적전겁전위수치곡선,분석료각충강근급기불동련접방법대기굉전지부식적영향,병종혼응토결구내구성적각도대각충강근련접방식적우결점진행료평개.결과표명:재유전련접적강근골가중의사용동충강근(화학성분상동);현계단응해우선선용동엄가생산적HRB400강근;수조건한제이필수채용불동강근시,의채용절연련접방식.
With simulated concrete pore solutions and various steel bars with different connection combina-tions,many electrochemical processes of steel bars inside concrete structures including passivation,activa-tion and corrosion was demonstrated.The effects of different steel bars and their various methods of con-nection on macrocell corrosion were analyzed,and the advantages and disadvantages of connection methods of steel bar were evaluated in terms of concrete structure durability.It is shown by experiment that identi-cal steel bars(in the same chemical components)should be used in electrical connection reinforcement cage,preferably HRB400 steel bar manufactured by one particular factory currently.However,when different types of steel bars are required due to any constraint,insulation connecting technology should be used.