粉煤灰化学成分对其抑制碱骨料反应效果影响试验研究  

Experimental study on the effect of chemical composition of fly ash on its inhibition of alkali aggregate reaction

作　　者：孔祥芝[1,3] 李行星 张恒 吴葵 马晓旭 KONG Xiangzhi;LI Xingxing;ZHANG Heng;WU Kui;MA Xiaoxu(State Key Laboratory Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Xinjiang Erqisi River Basin Investment(Group)Co.,Ltd.,Urumqi 830000,China;Key Laboratory for Hydraulic Materials of the Ministry of Water Resources,Beijing 100038,China)

机构地区：[1]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038 [2]新疆额尔齐斯河流域投资(集团)有限公司,新疆乌鲁木齐830000 [3]水利部水工材料重点实验室,北京100038

出　　处：《混凝土》2024年第8期112-114,119,共4页Concrete

基　　金：国家自然科学基金(51879286);新疆额尔齐斯河流域投资(集团)有限公司科研项目(EQ098/FY079,EQ094/FY077,QBT067/FY28)。

摘　　要：采用快速砂浆棒法,研究了不同化学成分含量粉煤灰抑制碱骨料反应的效果。试验表明:F类粉煤灰抑制碱骨料反应效果明显优于C类粉煤灰,且粉煤灰掺量越高抑制效果越好。统计分析表明,粉煤灰化学成分与其抑制碱骨料反应效果存在很好的相关性,抑制效果与SiO_(2)+Al_(2)O_(3)+Fe_(2)O_(3)总质量分数存在线性正相关,与CaO含量存在线性负相关,与碱含量没有直接相关性。The effect of fly ash with different chemical composition on inhibiting alkali aggregate reaction was studied by rapid mortar bar method.The test shows that the inhibition effectiveness of F type fly ash on alkali aggregate reaction is obviously better than that of C type fly ash,and the higher the content of fly ash is,the better the inhibition effect is.Statistical analysis shows that there is a good correlation between the chemical composition of fly ash and its inhibition effectiveness on alkali aggregate reaction.The inhibition effectiveness has a linear positive correlation with the total mass fraction of SiO_(2)+Al_(2)O_(3)+Fe_(2)O_(3),a linear negative correlation with CaO content,and no direct correlation with alkali content.

关 键 词：粉煤灰 化学成分 碱骨料反应 抑制效果 

分 类 号：TU528.041[建筑科学—建筑技术科学]