石墨导电混凝土物理特性研究  

Study on physical properties of graphite conductive concrete

作　　者：许霄曈 雷继帅 董伟 王冬昊 路辉 王宣 陆媛媛 XU Xiaotong;LEI Jishuai;DONG Wei;WANG Donghao;LU Hui;WANG Xuan;LU Yuanyuan(State Grid Jibei Electric Power Co.,Ltd.,Langfang Power Supply Company,Langfang 065000,Hebei,China;Henan Goryeo Electric Power Technology Co.,Ltd.,Zhengzhou 450006,Henan,China)

机构地区：[1]国网冀北电力有限公司廊坊供电公司,河北廊坊065000 [2]河南高丽电力科技有限公司,河南郑州450006

出　　处：《能源化工》2024年第4期30-34,共5页Energy Chemical Industry

摘　　要：石墨导电混凝土因其兼具良好的导电、耐腐蚀和力学等性能而广泛应用于接地模块、电磁屏蔽干扰、采暖和桥梁路面除冰防冻等工程领域。然而,目前针对石墨导电混凝土在电学性能、耐腐蚀性能和抗压强度方面仍缺乏相关研究,尤其是不同石墨配比对导电混凝土电阻特性、抗压强度等的影响规律尚不明确。本文以石墨作为导电材料添加,以水泥、砂等为基体制备了不同石墨配比的导电混凝土,并以石墨材料质量分数为10%时的导电混凝土特性开展研究,设计了稳定性试验、冷热循环试验、工频耐受试验和冲击耐受实验,并计算得到了对不同材料的表面平均年腐蚀率。为探究不同石墨配比下的导电混凝土特性变化规律,进一步分析了石墨配比分别为5%、10%、15%、20%、25%的导电混凝土电阻及抗压强度变化规律。相关研究为实现石墨导电混凝土的应用、保障电力系统运行安全提供了理论借鉴。Graphite conductive concrete is widely used in engineering fields such as grounding modules,electromagnetic shielding interference,heating,bridge and pavement deicing and antifeeding due to its excellent electrical conductivity,corrosion resistance,and mechanical properties.However,at present,there is still a lack of relevant research on the electrical properties,corrosion resistance,and compressive strength of graphite conductive concrete,especially the impact of different graphite ratios on the electrical resistance characteristics,compressive strength,and other aspects of conductive concrete is unclear.The conductive concrete with different graphite ratios is prepared by adding graphite as a conductive material and using cement,sand,and other substrates.The characteristics of conductive concrete with a graphite mass fraction of 10%are studied.Stability tests,cold and hot cycle tests,power frequency withstand tests,and impact withstand tests are designed.The average annual corrosion rate of the surface of different materials is calculated.In order to explore the characteristics of conductive concrete with different graphite ratios,the changes in electrical resistance and compressive strength of conductive concrete with graphite ratios of 5%,10%,15%,20%,and 25%are further analyzed.The relevant research provides a theoretical reference for realizing the application of graphite conductive concrete and ensuring the safety of power system operation.

关 键 词：石墨 导电混凝土 接地电阻 抗压强度 

分 类 号：TU528.59[建筑科学—建筑技术科学]