掺合料抑制碱骨料反应的试验研究  

Experimental research on the inhibition of alkali aggregate reaction by admixtures

作　　者：李磊 王清 刘娟 杨昆 孟园园 高杨春 LI Lei;WANG Qing;LIU Juan;YANG Kun;MENG Yuanyuan;GAO Yangchun(China Testing&Certification International Group Co.,Ltd.,Beijing 100024)

机构地区：[1]中国国检测试控股集团股份有限公司,北京100024

出　　处：《中国建材科技》2024年第4期52-55,共4页China Building Materials Science & Technology

摘　　要：为了研究掺合料对骨料碱硅酸反应活性的抑制效果,选用具有碱硅酸反应活性的骨料,通过掺加不同比例的掺合料,采用砂浆棒快速法测试各组试件的膨胀率。结果表明,掺合料对骨料碱硅酸反应活性有较好的抑制效果,掺合料的掺量越大,抑制效果越明显;粉煤灰和矿粉的双掺抑制效果大于单掺掺合料。In order to demonstrate the inhibitory effect of admixtures on the alkali silica activity of aggregates,aggregates with alkali silica activity are selected.Through adding different proportions of admixtures,the expansion rate of each group of specimens is tested by the mortar rod rapid method.The results show that admixtures have a good inhibitory effect on the alkali silica activity of aggregates,and the larger the dosage of admixtures,more obvious the inhibitory effect.The dual addition of fly ash and mineral powder has a better inhibitory effect than the single addition of admixture.

关 键 词：粉煤灰 矿渣粉 骨料 碱硅酸反应活性 

分 类 号：TU521[建筑科学—建筑技术科学]