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Influence of Water Glass on Strength of Fly Ash-Cements  

Park, Sang-Sook (Division of Civil and Environmental. Engineering, Sunchon National University)
Kang, Hwa-Young (Department of Civil and Environment, Hanyeong Technical College)
Han, Sang-Ho (Division of Civil and Environmental. Engineering, Sunchon National University)
Rim, Yu-Sup (Department of Bio-environmentla Chemistry, Sunchon National University)
Kim, Dong-Kuk (Division of Civil and Environmental. Engineering, Sunchon National University)
Kim, Se-Hoon (Division of Environmental and Chemical Engineering, Chonbuk National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.28, no.6, 2006 , pp. 661-666 More about this Journal
Abstract
The compressive strength of a paste composed of a low-calcium Class F fly ash and alkaline activator solutions was investigated. These activator solutions, made with sodium hydroxide, water glass and water, have a very high $OH^-$ concentration. The composition of alkaline activator solution and temperature have been shown to notably influence the development of the compressive strength of the fly ash-cements paste. Compressive strength of 50 MPa could be achieved by curing of the fly ash at $60^{\circ}C$ for 48 hrs or $85^{\circ}C$ for 24 hrs. This study presented the optimum mixing ratio of Class F fly ash/sodium hydroxide/water glass as 25:8:2 in weight basis, and activator/fly ash as 0.6/1.0 for high strength paste.
Keywords
Alkali Activated Cement; Fly Ash; Compressive Strength; Water Glass;
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1 Palomo, A, Grutzeck, M. W., and Blanco, M. T., 'Alkali-activated fly ashes-A Cement for the furture,' Cement and Concrete Research, 29, 1323 -1329(1999)   DOI   ScienceOn
2 Ma, W., Liu, C., Brown, P. W., and Komameni, S., 'Pore structures of fly ashes activated by $Ca(OH)_2\;and\; CaSO_4.2H_2O$,' Cem Concr Res., 25, 417-425(1995)   DOI   ScienceOn
3 Li, D., Chen, Y., Shen, J., Su, J. and Wu, X. 'The influence of alkalinity on activation and microstructure of fly ash,' Cem Concr Res., 30, 881-886(2000)   DOI   ScienceOn
4 Zhaohui, X. and Yunping, X., 'Hardening mechanism of an alkaline-activated class F fly ash,' Cem Concr Res., 31, 1245-1249(2001)   DOI   ScienceOn
5 박상숙, 강화영, 한상호, 강희복, 'F급 플라이 애쉬-모르타르의 강도발현에 대한 NaOH과 $Na_2SiO_3.9H_2O$ 첨가의 영향,' 한국구조물진단학회지, 9(4), 261-269(2005)
6 Katz, A, 'Microscopic Study of Alkali Activated Fly Ash,' Cem and Concr Res., 28, 197-208(1998)   DOI   ScienceOn
7 Kejin W., Surendra, P. S., and Alexander, M., 'Effects of Curing Temperature and NaOH Addition on Hydration and Strength Development of Clinker-free CKD-Fly Ash Binders,' Cement and Concrete Research, 34, 299-309(2004)   DOI   ScienceOn
8 Fruuy, A. L. A. and Bejen, J. M., Cem Concr Res., 19, 235-246(1989)   DOI   ScienceOn
9 Cochrane, J. W. and Boyd, T. J., 'Benification of Fly Ash by Carbon Burnout,' In Proc. 10th Ash Use Symp., Jan.(1993)
10 Wang, P., Chem, Z., and Scholz, H., 'Characteristics of morphology of the interface between cement paste and fly ash,' J. Chin Ceram Soc., 25(4), 475-749(1997)
11 Van Jaarsveld, J. G. S. and Van Deventer, J. S. J., 'The Potential Use of Geopolymeric Materials to Immobilize Toxic Metals: Part I. Theory and Applications,' Miner. Eng., 10, 659-669(1997)   DOI   ScienceOn
12 Puertas, F. and Fernandez-Jimenez, A, 'Mineralogical and Microstructural Characterisation of Alkali-activated Fly Ash/Slag Pastes,' Cement & Concrete Composites, 25, 287-292(2003)   DOI   ScienceOn