乙二醇与硫酸钠复合对粉煤灰火山灰活性影响的研究.pdf

粉煤灰综合利用 2011n0.1 FLY ASH COMPREHENSIVE UTILIZATION 题研究 乙二醇与硫酸钠复合对粉煤灰火山灰活性影响的研究 Study on the of Glycol Sodium Sulfate Compound on the Pozzolanic Activity of Fly Ash 叶东忠,王成勇,林春莺 (福州大学材料科学与工程学院,福建福州350108) 摘要:探讨乙二醇与硫酸钠复合对粉煤灰不同时期火山灰活性的影响。结果表明:将一定掺量的乙二醇与硫酸钠 复合掺入可以不同程度地提高粉煤灰早期、中期与后期的火山灰活性,其中早期的激发作用效果最大后期的激发作用 效果最小。且随着粉磨时间的延长,各水泥试样的3d、7d及28d抗压强度比值均有明显的提高但增幅下降。无论是否 粉磨及粉磨时间长短,将一定掺量的乙二醇与硫酸钠复合对粉煤灰不同时期火山灰活性的激发作用效果均优于单掺乙 二醇或硫酸钠;当硫酸钠掺量为1%,乙二醇掺量为0.03%进行复掺且粉磨时间15min时其对粉煤灰不同时期火山灰活 性的激发作用效果最大。 关键词乙二醇硫酸钠;粉煤灰;火山灰活性 中图分类号:TQ172.715 标识码:A文章编号:1005-8249(2011)01-0006-05 Dong-zhong ,WANG Cheng-yong ,LIN Chun-ying College of Materials Sciences and Engineering ,Fuzhou University ,Fuzhou ,Fujian 350108 ,china ) Abstract :The effect of ethylene glyeol bined with sodium sulfate on the pozzolanic activity of fly ash different stage were investigated The results show that the activity of fly ash at the early stage the middle stage and the Later stage can be improved in different extent by adding proper content of ethylene glyeol bined with sodium sulfate to cement .The exciting effect of ethylene glyeol bined with sodium sulfate in the early stage is the best and that in the later stage is the wors...