Title of article :
Influence of curing conditions on properties of high calcium fly ash geopolymer containing Portland cement as additive
Author/Authors :
Saengsuree Pangdaeng، نويسنده , , Tanakorn Phoo-ngernkham، نويسنده , , Vanchai Sata، نويسنده , , Prinya Chindaprasirt، نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2014
Pages :
6
From page :
269
To page :
274
Abstract :
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.
Keywords :
Geopolymer , High calcium fly ash , Portland cement , Additive , Curing condition
Journal title :
Materials and Design
Serial Year :
2014
Journal title :
Materials and Design
Record number :
1073652
Link To Document :
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