0.2水胶比下偏高岭土改性砂浆抗压强度研究  

Compressive Strength of Metakaolin Mortars at 0.2 w/b Ratio

作　　者：莫宗云[1] 周慧文[1] 白力改[1] 宋雪峰[1] 王振武[1] 

机构地区：[1]北华航天工业学院建筑工程系,河北廊坊065000

出　　处：《北华航天工业学院学报》2018年第1期21-23,共3页Journal of North China Institute of Aerospace Engineering

基　　金：北华航天工业学院青年基金项目(KY-2016-03);廊坊市科技局基金项目(2016011071)

摘　　要：本文研究不同偏高岭土掺量对0.2水灰比砂浆抗压强度的影响,同时复掺粉煤灰和石灰石粉。结果表明偏高岭土掺量对砂浆各龄期抗压强度有很大影响,低掺量时各龄期抗压强度增长较为缓慢,而高掺量时早期抗压强度增长迅速,后期增长非常缓慢。单掺粉煤灰时,粉煤灰活性反应极低,复掺粉煤灰和石灰石粉时由于两者的协同效应会使砂浆后期抗压强度增长迅速。This paper studies the influence of mortar compressive strength at 0.2 water/cement ratio with different dosage of metakaolin, double mixing fly ash and limestone powder at the same time. Results show that metakaolin content has a great influence on the compressive strength of mortars in various age. In low metakaolin content, the compressive strength increase slowly, while increase quickly at early age and very slowly at later age in high metakaolin content. 0nly mixing fly ash, activity reaction of fly ash is extremely low. Double mixing fly ash and limestone powder, the compressive strength of mortars increase rapidly due to the synergistic effect of fly ash and limestone powder.

关 键 词：0.2水胶比 偏高岭土 石灰石粉 粉煤灰 抗压强度 

分 类 号：TU526[建筑科学—建筑技术科学]