An Experimental Study on Constant Current Load Test of Reinforced Concrete based on 3D Paraffin Isolation

作     者：SHANG Minggang XUE Cuizhen ZHANG Yunsheng HEZhongmao QIAO Honzxin PENG Qiong Theogene Hakuzweyezu HAN Zhao SHANG Minggang;XUE Cuizhen;ZHANG Yunsheng;HE Zhongmao;QIAO Hongxia;FENG Qiong;Theogene Hakuzweyezu;HAN Zhao

作者机构：School of Civil EngineeringLanzhou University of TechnologyLanzhou730050China Gansu Advanced Civil Engineering Materials Engineering Research CenterLanzhou730050China College of Science&Technology Ningbo UniversityNingbo315211China Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2023年第38卷第2期

页      面：353-365页

核心收录：

学科分类：08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：Funded by the National Natural Science Foundation of China (U21A20150,52208249,51878153,52008196,and 52178216) the National Natural Science Foundation of China Youth Science (52108219) the Deterioration Characteristics and Mechanisms of Cement Concrete with CWPM under Coupled Thermo-Hydro-Chemical Effect,the Youth Science and Technology Foundation of Gansu Province (22JR5RA288) the Research and Demonstration of Key Technologies of Green and Smart Highways in Gansu Province (21ZD3GA002) the Natural Science Innovation Foundation of Gansu Higher Education Institutions (2022CYZC-25) the Support from Research on Key Technologies of Durability Repair of Highway Concrete Bridges,Key Projects of Chongqing Science and Technology Bureau (cstc2021jscx-jbgs0029) 

主　　题：Cl−content AC impedance constant stress test acceleration factor full factor life cycle 

摘      要：Aiming at the complex corrosion degradation factors of reinforced concrete and clearing the deterioration mechanism in the constant stress state,a new type of constant current accelerated corrosion method in the saline soil environment was *** three-dimensional paraffin isolation specimens and the three-dimensional penetration specimens were taken as the research objects,and the Cl−content and AC impedance Bode diagram were *** macro morphology and micro analysis were also used to evaluate the corrosion degradation laws of the two groups of specimens.A constant current three-factor system accelerated model was established for the current acceleration factor,chloride ion,and sulfate ion acceleration *** experimental results show that,in the constant stress test of the saline soil environmental conditions,the paraffin isolation layer can effectively isolate corrosive chloride ions,which is a brand-new research method of single factor variable control in the constant stress *** to the basic corrosion data,the law of constant current acceleration test is summarized and divided into five corrosion degradation stages,and each stage has significant changes in the accelerated corrosion *** corrosion degradation of a constant stress test is the combined effect of constant current,positive and negative penetration of chloride ions and sulfate ions.