Huseien, Ghasan Fahim and Mirza, Jahangir and Ismail, Mohammad and Ghoshal, Sib Krishna and Ariffin, Mohd. Azreen Mohd. (2016) Effect of metakaolin replaced granulated blast furnace slag on fresh and early strength properties of geopolymer mortar. Ain Shams Engineering Journal . ISSN 2090-4479 (In Press)
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Abstract
We report the effect of metakaolin (MK) substituted granulated blast furnace slag (GBFS) on the early strength of geopolymer mortars (GPMs) for potential repair applications. Such GPMs were prepared by activating MK (0-15%) replaced GBFS. Solution concentrations ratio of SiO2:Na2O were varied in the range of 1.08-1.26 to achieve appropriate geopolymerization. Various proportion of Na2O:dry binder (7, 8, 9, 11 and 13%) were used. The mass ratios of sodium silicate to sodium hydroxide (NS:NH) and the binder to fine aggregate (B:A) were fixed to 3.0 and 0.90, respectively. The mechanical properties of the synthesized GPMs were determined at ambient temperature after 24h of casting and curing. It is demonstrated that 5% of MK replaced GBFS with 1.16 of SiO2:Na2O and 0.40 of S:B achieved an early compressive strength as much as 47.84MPa at 24h. The bond strength results exhibited the prospect of such GPMs as suitable alternative repair material.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Bond strength, Compressive strength, Geopolymer, Metakaolin, SiO2:Na2O |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Civil Engineering |
| ID Code: | 72814 |
| Deposited By: | Fahmi Moksen |
| Deposited On: | 20 Nov 2017 08:14 |
| Last Modified: | 20 Nov 2017 08:14 |
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