Browse > Article

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;
Citations & Related Records
연도 인용수 순위
  • Reference
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 Fruuy, A. L. A. and Bejen, J. M., Cem Concr Res., 19, 235-246(1989)   DOI   ScienceOn
6 박상숙, 강화영, 한상호, 강희복, 'F급 플라이 애쉬-모르타르의 강도발현에 대한 NaOH과 $Na_2SiO_3.9H_2O$ 첨가의 영향,' 한국구조물진단학회지, 9(4), 261-269(2005)
7 Katz, A, 'Microscopic Study of Alkali Activated Fly Ash,' Cem and Concr Res., 28, 197-208(1998)   DOI   ScienceOn
8 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
9 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
10 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
11 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)
12 Cochrane, J. W. and Boyd, T. J., 'Benification of Fly Ash by Carbon Burnout,' In Proc. 10th Ash Use Symp., Jan.(1993)