摘要
为探讨高烧失量粉煤灰的利用,在碳纤维质量分数为0.5%和0.9%的机敏水泥基材料中,分别加入烧失量(质量分数)4.88%和26.28%,掺量15%,20%,25%的两种粉煤灰。通过对其在小应力循环作用下压敏性和导电性变化规律的研究,指出当纤维掺量较低时,含高烧失量粉煤灰的机敏水泥砂浆的压敏性,随着粉煤灰量的增加而变差;当纤维掺量较高时,含高烧失量粉煤灰的机敏水泥砂浆的压敏性,随着粉煤灰量的增加而变好;含高烧失量粉煤灰的机敏水泥砂浆导电性总低于含低烧失量粉煤灰的水泥砂浆。
To reach the effective utilization of flying ash with high loss, two flying ashes with ash loss of 4.88% and 26.28% in mass were added at the dosage of 15%,20% and 25% to smart cement-based materials containing 0.5 % or 0.9 % of carbon fibers. The investigation of press-sensitivity and conductivity under circulating small stress shows that with increasing flying ash dosage, the press-sensitivity of smart cement-based mortar decreased for lower fiber content but increased for higher fiber content, and the mortar with high loss flying ash was lower in conductivity than that with low loss flying ash.
出处
《太原理工大学学报》
CAS
北大核心
2009年第6期570-572,578,共4页
Journal of Taiyuan University of Technology
关键词
粉煤灰烧失量
碳纤维
机敏水泥基材料
压敏性
导电性
ash loss
carbon fiber
smart cement-based material
press-sensitivity
conductivity
