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

被引：236
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
相关论文
共 22 条
[1]  
Allahverdi A, 2011, CERAM-SILIKATY, V55, P68
[2]   Thermal behaviour of geopolymers prepared using class F fly ash and elevated temperature curing [J].
Bakharev, T .
CEMENT AND CONCRETE RESEARCH, 2006, 36 (06) :1134-1147
[3]   Strength, porosity and corrosion resistance of ternary blend Portland cement, rice husk ash and fly ash mortar [J].
Chindaprasirt, P. ;
Rukzon, S. .
CONSTRUCTION AND BUILDING MATERIALS, 2008, 22 (08) :1601-1606
[4]   Workability and strength of coarse high calcium fly ash geopolymer [J].
Chindaprasirt, P. ;
Chareerat, T. ;
Sirivivatnanon, V. .
CEMENT & CONCRETE COMPOSITES, 2007, 29 (03) :224-229
[5]   Effect of SiO2 and Al2O3 on the setting and hardening of high calcium fly ash-based geopolymer systems [J].
Chindaprasirt, Prinya ;
De Silva, Pre ;
Sagoe-Crentsil, Kwesi ;
Hanjitsuwan, Sakonwan .
JOURNAL OF MATERIALS SCIENCE, 2012, 47 (12) :4876-4883
[6]   GEOPOLYMERS - INORGANIC POLYMERIC NEW MATERIALS [J].
DAVIDOVITS, J .
JOURNAL OF THERMAL ANALYSIS, 1991, 37 (08) :1633-1656
[7]  
Davidovits J., 1999, Geopolymer
[8]   Compatibility studies between N-A-S-H and C-A-S-H gels. Study in the ternary diagram Na2O-CaO-Al2O3-SiO2-H2O [J].
Garcia-Lodeiro, I. ;
Palomo, A. ;
Fernandez-Jimenez, A. ;
Macphee, D. E. .
CEMENT AND CONCRETE RESEARCH, 2011, 41 (09) :923-931
[9]   Alkali-activated complex binders from class C fly ash and Ca-containing admixtures [J].
Guo, Xiaolu ;
Shi, Huisheng ;
Chen, Liming ;
Dick, Warren A. .
JOURNAL OF HAZARDOUS MATERIALS, 2010, 173 (1-3) :480-486
[10]   Effect of palm oil fuel ash fineness on the microstructure of blended cement paste [J].
Kroehong, Wunchock ;
Sinsiri, Theerawat ;
Jaturapitakkul, Chai ;
Chindaprasirt, Prinya .
CONSTRUCTION AND BUILDING MATERIALS, 2011, 25 (11) :4095-4104
123