Abstract
Portland cement was mixed with rice husk ash (RHA) fired at 450, 700 and 1000‡C, in ratios of 5, 15 and 25% of RHA by mass. Cement-RHA pastes were made by using a water/solid mixture ratio of 0.30 by mass and then cured for various hydration periods within the range 3 to 90 days. The surface properties of the hydrated samples were studied by means of the nitrogen adsorption technique. The results indicated that the hydrated cement-RHA samples made from rice husks fired at 450 and 700‡C gave higher values of surface area than that for the hydrated cement-RHA sample made from rice husks fired at 1000‡C. The surface area and pore volume results could be related to the pore structure of the silica produced in the RHA, as controlled by its predicted degree of crystallinity.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
S. A. Abo-El-Enein, S. Hanafi, D. M. Ibrahim and S. A. El-Hemaly, Thermochim. Acta, 36 (1980) 299.
S. Hanafi, S. A. Abo-El-Enein, D. M. Ibrahim and S. A. El-Hemaly, Thermochim. Acta, 37 (1980) 137.
D. M. Ibrahim, S. A. El-Hemaly, S. A. Abo-El-Enein, S. Hanafi and M. Helmy, Thermochim. Acta, 37 (1980) 347.
N. M. Al-Khalaf and H. A. Yousif, Int. J. Cem. Compos. Lightweight, Concr., 6 (1984) 241.
A. F. Galal, A. S. Taha, I. M. Helmy and H. Ei-Didamony, Silic. Ind., 55 (1990) 55.
T. C. Powers and T. L. Brownyard, Proc. Am. Concr. Inst., 43 (1946–47) 101, 249, 549, 669, 845, 933.
R. L. Baline and H. J. Valis, J. Res. Nat. Bur-Std., 42 (1949) 257.
L. F. Glysteen and G. L. Kalousek, Proc. Am. Concr., Inst., 51 (1954) 477.
R. Sh. Mikhail, D. H. Turk and S. Brunauer, Cem. Concr. Res., 5 (1975) 433.
J. Skalny and I. Odler, épít∼oanyag, 27 (1975) 188, Chem. Abs., 55 (5–6) (1976) 101.
F. C. R. Gimbletl, C. D. Lowrence and K. S. W. Sing, Langmuir, 5 (1989) 1217.
H. H. Willems and J. Poulis, Thermochim. Acta, 103 (1986) 137.
H. El-Didamony, M. Y. Haggag and S. A. Abo-El-Enein, Cem. Concr. Res., 8 (1978) 351.
H. El-Didamony, Thermochim. Acta, 35 (1980) 201.
H. El-Didamony and A. A. Khalil, Zement-kalk-Gips, 34 (1981) 660.
S. Brunauer, P. H. Emmett and E. Teller, J. Am. Chem. Soc., 60 (1964) 30.
B. L. Lippens, B. G. Linsen and J. H. De-Boer, J. Catalysis, 3 (1938) 32.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
El-Hosiny, F.I., Abo-El-Enein, S.A., Helmy, I.M. et al. Effect of thermal treatment of rice husk ash on surface properties of hydrated portland cement-rice husk ash pastes. Journal of Thermal Analysis 48, 809–817 (1997). https://doi.org/10.1007/BF01997186
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01997186