期刊导航

论文摘要

可埋入式混凝土用固态Mn/MnO参比电极制备及性能表征

Preparation and Characterization of Mn/MnO Reference Electrode for Buried Concrete

作者:王鹏刚(青岛理工大学);王缘(青岛理工大学);郭腾飞(青岛理工大学);赵铁军(青岛理工大学);田砾(青岛理工大学);金祖权(青岛理工大学);万小梅(青岛理工大学);王兰芹(青岛理工大学)

Author:WANG Penggang(Qingdao University of Technology);WANG Yuan(Qingdao University of Technology);GUO Tengfei(Qingdao University of Technology);ZHAO Tiejun(Qingdao University of Technology);TIAN Li(Qingdao University of Technology);JIN Zuquan(Qingdao University of Technology);WAN xiaomei(Qingdao University of Technology);WANG Lanqin(Qingdao University of Technology)

收稿日期:2019-09-18          年卷(期)页码:2020,52(6):-

期刊名称:工程科学与技术

Journal Name:Advanced Engineering Sciences

关键字:参比电极;粉压法;性能表征;影响因素

Key words:reference electrode; pressed powder method; performance; influencing factors

基金项目:(Foundation item):国家自然科学基金(51608286,51878365);山东省重点研发计划(2019GSF110006);青岛市应用基础研究计划项目(17-1-1-13-jch);山东省“双一流”建设工程-土木

中文摘要

氯盐侵蚀是影响海洋环境和盐湖、盐渍土地区混凝土结构中钢筋腐蚀最主要的因素。因此,及时、准确掌握钢筋混凝土结构内部氯离子分布状态对于严酷环境条件下钢筋混凝土结构的耐久性评估、防护与修复意义重大。本文采用物理粉压法制备了一种结构致密、性能稳定的可埋入式混凝土用固态Mn/MnO2参比电极。结果表明:加载压力是影响压片法制备Mn/MnO2电极强度、致密度的重要参数。在制备Mn/MnO2电极时,需要控制好加载压力,推荐加载压力为96 MPa。该电极在使用之前必须进行活化,活化后的Mn/MnO2电极响应时间小于60秒,稳定性、重现性和抗极化性能良好。当Mn/MnO2电极在5~60℃温度范围内工作时,电极电位与温度线性相关。当Mn/MnO2电极在8.36~13pH值范围内工作时,电极电位保持恒定。所以,如果将本文方法制备的Mn/MnO2电极作为氯离子传感器的参比电极埋入混凝土中时,必须同时测试混凝土内部的温度,并作修正。

英文摘要

Chloride penetration is the main reason for corrosion of steel bars in reinforced concrete in marine environment, salt lake area and saline soil area. Therefore, measurement of chloride distribution in reinforced concrete structures timely and accurately is of great significance for durability assessment, maintenance and repair of reinforced concrete structures under severe environment. In this paper, a solid-state Mn/MnO2 reference electrode with dense structure and stable performance, which can be embedded in concrete, was prepared by pressed powder method. Results showed that loading pressure is an important parameter that affects the strength and density of Mn/MnO2 electrode prepared. During preparation of Mn/MnO2 electrode, it is necessary to control the loading pressure. The suggested pressure loading pressure is 96 MPa. And the Mn/MnO2 electrode must be activated before use. After activated, the response time of the Mn/MnO2 electrode is less than 60 second.Also the Mn/MnO2 electrode has stable performance, good reproducibility and good resistance of polarization. The potential value of the Mn/MnO2 electrode increases linearly with the increase of temperature between 5℃ and 65℃. Besides, the pH value between 8 and 13 has almost no effect on the potential value of the Mn/MnO2 electrode. So, if the Mn/MnO2 electrode prepared in the way mentioned in this paper is used as reference electrode of chloride sensor, temperature of concrete at the location of chloride sensor is also needed to record simultaneously. And the potential value of the Mn/MnO2 electrode must be corrected by temperature.

上一条:工质对180~230 K低温环路热管工作特性的影响

关闭

Copyright © 2020四川大学期刊社 版权所有.

地址:成都市一环路南一段24号

邮编:610065