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Heat of Hydration and Characterization of Reaction Products of Adiabatically Cured Fly Ash and Slag Mixtures

  • S. Kaushal (a1), D. M. Roy (a1) and P. H. Licastro (a1)

Abstract

The hydration of cementitious materials is an exothermic process which results in significant temperature increases in large masses of these materials. The thermal environment under these conditions is nearly adiabatic. The heat of hydration of cementitious aluminosilicate blend materials incorporating fly ash and granulated blast-furnace slag was calculated from the adiabatic temperature rise. Additional reaction of siliceous fly ash with alkaline solutions results in the formation of zeolitic reaction products. Studies were carried out to characterize the hydration products by X-ray diffraction and through analysis of solutions. In addition, zeolitic reaction products were prepared by reacting the pure Class F fly ash at 90°C with NaOH and different anions. This study has implications for general thermal properties of hydrating cementitious materials, and for costeffective immobilization of radioactive and chemical waste cations and anions.

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References

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1. Roy, D.M., “Portland Cement: Constitution and Processing. Part 1: Cement Manufacture,” in. Instructional Modules in Cement Science, edited by Roy, D.M., (Materials Education Council, University Park, PA 1985).
2. Gotsis, C., ATHENAN: Axisymmetric thermal nonlinear analysis. A computer program for cements and other chemically reactive cylindrical domains and associated graphics algorithms, Ph.D. Thesis, The Pennsylvania State University, 1984.
3. Gotsis, C., Roy, D.M., Licastro, P.H. and Kaushal, S., in Concrete at Early Ages, edited by Young, J.F., (American Concrete Institute, Detroit, 1986), pp. 4970.
4. Kaushal, S., Roy, D.M., Licastro, P.H. and Langton, C.A., in Fly Ash and Coal Conversion By-products: Characterization. Utilization and Disposal II, Mat. Res. Soc. Symp. Proc. 65, Eds. McCarthy, G.J., Glasser, F.P. and Roy, D.M. (Materials Research Society, Pittsburgh, 1986), pp. 311320.
5. Idorn, G.M. and Henrikson, K.R., Cem. Conc. Res. 14, 463 (1984).
6. Andersen, K.T. and Holm, J., in Concrete Microstructure, 4th Quarterly Report to Strategic Highway Research Program, Roy, D.M., , P.I., (National Research Council, Washington, D.C., Jan. 1989), pp. 5572, in press.
7. Roy, D.M., “Fly Ash and Silica Fume Chemistry and Hydation,” in Proc. 3rd Int.. Conf. on Fly Ash. Silica Fume. Slag. and Natural Pozzolans in Concrete, (American Concrete Institute, 1989), in press.
8. Roy, D.M., “Hydration, Microstructure, and Chloride Diffusion of Slag-Cement Pastes and Mortars,” in Proc. 3rd Intl. Conf. on Fly Ash. Silica Fume. Slag. and Natural Pozzolans in Concrete, (American Concrete Institute, 1989), in press.
9. Roy, D.M., “Relationships Between Permeability, Porosity, Diffusion, and Microstructure of Cement Paste, Mortar, and Concrete at Different Temperatures,” in Pore Structure and Permeability of Cementitious Materials, Proc. Mat. Res. Soc. Symp. P, (in press, 1988).
10. Langton, C.A., Dukes, M.D. and Simmons, R.V., in Scientific Basis for Nuclear Waste Management VII, Edited by McVay, G.L., Mat. Res. Soc. Symp. Proc. 26, (Materials Research Society, Pittsburgh 1984), pp. 575584.
11. Kaushal, S., Thermal Properties of Aluminosilicate Materials for Low-Temperature Bulk Applications, Ph.D. Thesis, The Pennsylvania State University, Dec. 1988.
12. Waterways Experiment Station, Handbook for Concrete and Cement, (U.S. Army Corps of Engineers, Vicksburg, Mississippi, 1980).
13. Regourd, M., in Instructional Modules in Cement Science, Edited by Roy, D.M., (Materials Education Council, University Park, Pennsylvania, 1985), pp. 93111.
14. Wu, X., Roy, D.M. and Langton, C.A., Cem. Conc. Res. 13 (2), 277 (1983).
15. Young, J.F., in Hydration of Portland Cement. Instructional Modules in Cement Science, ed., Roy, D.M., (Materials Education Council, University Park, Pennsylvania, 1985).
16. Komarneni, S. and Roy, D.M., J. Mat. Sci. 20, 29302936 (1985), pp. 1–24.
17. Malek, R.I.A. and Roy, D.M., in 6th Intl. Conf. on Alkalis in Concretes. Research and Practice, Idorn, G.M., Rostam, S., eds., (Danish Concrete Ann., Copenhagen, 1983), pp. 223–230.

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