摘要
研究了钢渣对熟料-粉煤灰-磷石膏体系缓凝微膨胀水泥的性能影响,结果表明:水泥的凝结时间随着钢渣掺量的增加而缩短;当钢渣掺量为10%时,各龄期抗压强度均达到最大值;在饱水养护阶段,随着龄期的增长累积膨胀率持续增加。在干养阶段水泥开始收缩,膨胀率不断下降,同时各龄期膨胀率随着钢渣掺量的增加略微降低;早期水化速率随钢渣掺量的增加而增加,诱导期略微缩短;钢渣掺量对硬化浆体孔结构影响不大。
The effect of steel slag on the properties of clinker-fly ash-phosphogypsum slow-setting slight-expansion cement was studied.When the steel slag content is 10%,the compressive strength reaches the maximum value at different ages.On the water curing stage,the cumulative expansion rate increases with the growth of age.On the dry curing stage,the cement begins to shrink and the expansion rate continues to decline.Meanwhile,the expansion rate decreases slightly with the increase of steel slag content in different age.The early hydration rate increases with the increase of steel slag content.The induction period is slightly shortened,and the influence of steel slag content on the pore structure of hardened slurry is not significant.
作者
赵德强
张昺榴
沈卫国
刘利民
方达
朱文尚
吉晓莉
ZHAO De-qiang;ZHANG Bing-liu;SHEN Wei-guo;LIU Li-min;FANG Da;ZHU Wen-shang;JI Xiao-li(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;State Key Laboratory of Silicate Materials for Architecture,Wuhan University of Technology,Wuhan 430070,China;WUT-UC Berkeley Joint Laboratory on Concrete Science and Technology,Wuhan 430070,China;Gezhouba Zhongxiang Cement Co Ltd,Zhongxiang 431913,China)
出处
《武汉理工大学学报》
CAS
北大核心
2019年第7期43-47,94,共6页
Journal of Wuhan University of Technology
基金
十三五国家重点研发计划(2016YFB0303603)
2017年贵州省公路交通科技项目
关键词
凝结时间
膨胀率
钢渣
性能
setting time
expansion rate
steel slag
performance
作者简介
赵德强(1995-),男,硕士生.E-mail:541499873@qq.com;通讯作者:沈卫国(1971-),男,博士,研究员.E-mail:shenwg@whut.edu.cn
