粉煤灰替代水泥对干粉砂浆性能的影响研究  

Performance Impact on Dry-mixed Mortar of Fly Ash when Replacing Cement

作　　者：谌俊[1] 朱方才[1] 郑彩华[1] 吴彤[1] 陈志川 张黎[1] 

机构地区：[1]清远职业技术学院机电工程学院,广东清远511510 [2]广东家美陶瓷有限公司,广东清远511510

出　　处：《清远职业技术学院学报》2013年第3期66-69,共4页Journal of Qingyuan Polytechnic

摘　　要：通过研究不同含量粉煤灰代替部分水泥对干粉砂浆稠度、保水性能、抗压强度和凝结时间的影响,结果发现随着粉煤灰含量的增加,干粉砂浆抗压强度和稠度逐渐减小,而保水性能和凝结时间变化不大并都在合格范围,当粉煤灰替代水泥的含量升到45%后,砂浆抗压强度低于10MPa,不适宜继续增加粉煤灰。This paper has studied the effect of different content of fly ash,which replaced cement bit by bit,on the drymixed mortar denseness,water retention properties,compressive strength and setting time.Results showed that with the increase of fly ash content,compressive strength and denseness of dry-mixed mortar gradually decreased,but water retention performance and setting time of dry-mixed mortar changed a little and within the qualified range.It＇s unfit to continue to add fly ash,when the content of fly ash has increased to 45%,because the compressive strength of dry-mixed mortar decreased less than 10Mpa.

关 键 词：干粉砂浆 粉煤灰 抗压强度 保水性 

分 类 号：TU582[建筑科学—建筑技术科学]