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研究了不同导电介质配合比及不同环境条件对导电混凝土电热性能的影响。试验结果表明,在相同环境条件下,钢纤维石墨复合的导电混凝土试件导电性能优于单一导电介质所制作的导电混凝土试件。随着环境温度与湿度的升高,导电混凝土的初始电流、电流增量与温度增量均有所上升。由于导电机理的不同,纯石墨导电混凝土试件受到环境条件的影响比钢纤维复合石墨导电混凝土试件更大。建议采用30℃、100%湿度作为导电混凝土测试的标准环境条件。
The effects of different conductive media mixing ratio and different environmental conditions on the electric and thermal properties of conductive concrete were studied. The experimental results show that under the same environmental conditions, the electrical conductivity of steel-fiber-graphite composite conductive concrete specimens is better than that of conductive concrete specimens made of single conductive medium. With the increase of ambient temperature and humidity, the initial current, current increment and temperature increment of conductive concrete all increase. Due to the different conductive mechanism, pure graphite conductive concrete specimens are more affected by environmental conditions than steel fiber composite graphite conductive concrete specimens. Recommended 30 ℃, 100% humidity as the conductive concrete testing standard environmental conditions.