摘要
以Ⅲ级粉煤灰作为主要胶凝材料,制备粉煤灰地聚物混凝土(FGC),探究在冻融循环作用下,激发剂模数和粉煤灰细骨料替代率对FGC质量损失率、相对动弹性模量和相对抗压强度等方面特性的影响。结果表明:激发剂模数为1.5时,FGC质量损失最小,模数为1.0时,动弹性模量和强度损失最小;粉煤灰部分替代细骨料时,对FGC抗冻性能提升效果显著,且替代率为25%时FGC抗冻性能最佳。
Fly ash geopolymer concrete(FGC)was prepared by using gradeⅢfly ash as the main cementitious material.The freeze loss and thawing cycle was used to investigate the loss rate of activator modulus and fly ash fine aggregate to the FGC mass loss rate,relative dynamic elastic modulus and relative compressive strength.The results show that when the activator modulus is 1.5,the FGC mass loss is the smallest,and when the modulus is 1.0,the dynamic elastic modulus and the strength loss are the smallest.When the fly ash partially replaces the fine aggregate,the FGC antifreeze performance is significantly improved.FGC has the best antifreeze performance when the replacement rate is 25%.
作者
毛明杰
李瑞文
杨秋宁
李兆鹏
Mao Mingjie;Li Ruiwen;Yang Qiuning;Li Zhaopeng(School of Civil&Hydraulic Engineering,Ningxia University Yinchuan,Ningxia 750021)
出处
《非金属矿》
CAS
CSCD
北大核心
2020年第2期48-50,共3页
Non-Metallic Mines
基金
国家自然科学基金(51568055)。
关键词
粉煤灰地聚物混凝土
冻融循环
激发剂模数
粉煤灰细骨料替代率
fly ash geopolymer concrete
freeze-thaw cycle
activator modulus
fly ash fine aggregate replacement rate
