Influence of curing conditions on properties of high calcium fly ash geopolymer containing Portland cement as additive

被引：233
作者：
Pangdaeng, Saengsuree [1 ]
Phoo-ngernkham, Tanakorn [1 ]
Sata, Vanchai [1 ]
Chindaprasirt, Prinya [1 ]
机构：
[1] Khon Kaen Univ, Sustainable Infrastruct Res & Dev Ctr, Dept Civil Engn, Fac Engn, Khon Kaen 40002, Thailand
来源：
MATERIALS & DESIGN | 2014年 / 53卷
关键词：
Geopolymer; High calcium fly ash; Portland cement; Additive; Curing condition; STRENGTH; TEMPERATURE; SLAG; GEL;
D O I：
10.1016/j.matdes.2013.07.018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper investigated the mechanical properties and microstructure of high calcium fly ash geopolymer containing ordinary Portland cement (OPC) as additive with different curing conditions. Fly ash (FA) was replaced with OPC at dosages of 0%, 5%, 10%, and 15% by weight of binders. Setting time and microstructure of geopolymer pastes, and flow, compressive strength, porosity and water absorption of geopolymer mortars were studied. Three curing methods viz., vapour-proof membrane curing, wet curing and temperature curing were used. The results showed that the use of OPC as additive improved the properties of high calcium fly ash geopolymer. The strength increased due to the formation of additional C-S-H and C-A-S-H gel. Curing methods also significantly affected the properties of geopolymers with OPC. Vapour-proof membrane curing and water curing resulted in additional OPC hydration and led to higher compressive strength. The temperature curing resulted in a high early compressive strength development. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：269 / 274
页数：6
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    Yip, CK
    Lukey, GC
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