摘要
借助四电极法,研究了粉煤灰及矿渣微粉对水泥石电阻率的影响规律。结果表明:掺粉煤灰水泥石体系的电阻率变化趋势随着龄期的延长由慢变快;在前期,水泥石的电阻率与粉煤灰掺量成反比且低于基准样;在后期,水泥石的电阻率与粉煤灰掺量成正比且超过基准样。水泥石电阻率与矿渣微粉掺量成正比,并且随着龄期的延长其增长速率由快变慢;二者复合能更好的体现其"叠加效应",在一定龄期内,可以实现电阻率的持续增长。
With the aid of four-probe method, this article has studied the influence rule of fly ash and slag-micropowder to the cement paste resistivity. The result indicated that, with age lengthening,the variational tendency of cement paste resistivity added fly ash changed from slowly to quickly; in the earlier time, the cement paste resistivity was inverse to the quantity of the fly ash also lower than the datum type; In the later time, the cement-paste resistivity was direct to the quantity of the fly ash and also surpassed the datum type. The cement-paste resistivity was direct to the quantity of slag-micropowder and with the age lengthening,its resistivity increased from quickly to slowly. In the certain age time, the two compound can manifest ＂superimposition effect＂ better and may make resistivity grow durative.
出处
《国外建材科技》
2008年第2期4-7,共4页
Science and Technology of Overseas Building Materials
基金
国家自然科学基金(50772084)
湖北省科学基金计划创新群体项目(2007ABC006)
关键词
无机矿物掺合料
水泥石
电阻率
inorganic mineral admixtures
cement paste
resistivity
作者简介
丁华涛（1980-），硕士生．E-mail：feige-2003@163．com
