摘要
以石墨作为导电功能填料替代混凝土中部分基料,通过调节石墨导电功能基元材料的含量,使混凝土具有较低的电阻率,可作为致热体。通过对样品电阻率的研究,分析了石墨含量及不同测试方法对混凝土电阻率的影响;通过热效应分析,研究了石墨电热混凝土的致热效果和发热功率的稳定性,在通电120min内,混凝土块表面的最高温度达到了120.3℃,为设计高性能致热建筑材料提供了参考依据。
In this paper, the electrothermal concrete contained the graphite was prepared, and the influence of the graphite contents and different measurement methods on resistivity were analyzed. On the basic of the above, the thermal effect and heating power stability of graphite electrothermal concrete were investigated. The experimental results showed that the maximum superficial temperature of graphite electrothermal concrete reached 120.3℃ in electrifying for 120min, these experimental results provided the basis for further designing and producing of high powered heating build materials.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2008年第3期385-387,共3页
Journal of Functional Materials
基金
国家高技术研究发展计划(863计划)资助项目(2001AA322070)
教育部重点资助项目(2002383405)
关键词
石墨
电热混凝土
电阻率
热效应
graphite
electrothermal concrete
resistivity
thermal effect
