Studies on the Effect of Retention Time of Rice Husk Combustion on the Ash’s Chemo-Physical Properties and Performance in Cement Mixtures
Publication: Journal of Materials in Civil Engineering
Volume 24, Issue 6
Abstract
This study investigates the effect of retention time of rice husk ash (RHA) combustion on its characteristics. The retention time was changed from 15 min up to 32 h. The chemo-physical and microstructural properties characterization methods included monitoring of electrical conductivity and pH variations of saturated lime–RHA solution, X-ray fluorescence, and diffraction. To assess the pozzolanic performance of RHA, a control mortar was produced as a reference with a water-to-cement ratio of 0.45 and a flow of 84%, and three cement replacement percentages by RHA of 5, 10, and 15% were applied for each retention time. The results show that with an increase in retention time, the EC and pH changes steadily decrease, suggesting lower RHA reactivity at longer retention times. However, no crystalline phases were found in RHA up to 32-h combustion, primarily because of the rapid cooling of the yield ash. In contrast, the compressive strength of RHA blended mortars increases up to 4 h combustion and then decreases. A possible explanation for the lower strength activity of short retention time RHA is offered in this study.
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Acknowledgments
Support from the Concrete Technology Laboratory, Center of Excellence in Structures and Earthquake Engineering (CESEE), Laboratory of Solidification of Metals and Environmental Laboratory of Sharif University of Technology are greatly appreciated.
References
ASTM. (2007a). “Standard specification for concrete aggregates.” C33-07, West Conshohocken, PA.
ASTM. (2007b). “Standard specification for portland cement.” C150-07, West Conshohocken, PA.
ASTM. (2007c). “Standard test methods for sampling and testing fly ash or natural pozzolans for use in portland-cement concrete.” C311-07, West Conshohocken, PA.
ASTM. (2007d). “Standard test method for flow of hydraulic cement mortar.” C1437-07, West Conshohocken, PA.
ASTM. (2008). “Standard test method for compressive strength of hydraulic cement mortars.” C109/C109M-08, West Conshohocken, PA.
Barnes, P., and Bensted, J. (1984). Structure and performance of cements, Elsevier, New York.
Boeteng, A. A., and Skeete, D. A. (1990). “Incineration of rice hull for use as a cementitious material: The Guyana experience.” Cem. Concr. Res.CCNRAI, 20(5), 795–802.
Chandrasekhar, S., Satyanarayana, K. G., Pramada, P. N., and Raghavan, P. (2003). “Processing, properties and applications of reactive silica from rice husk—an overview.” J. Mater. Sci.JMTSAS, 38(15), 3159–3168.
Chatterjee, A. K. (2001). “X-ray diffraction.” Handbook of analytical techniques in concrete science and technology, Ramachandran, V. S., Beaudoin, J. J., eds., Noyes Publications, Park Ridge, NJ.
Chopra, S. K., Ahluwalia, S. C., and Laxmi, S. (1981). “Technology and manufacture of rice husk ash masonry cement.” Proc., ESCAP/RCTT Third workshop on Rice Husk Ash Cements, New Delhi, India.
Cook, D. J. (1986). “Natural pozzolanas.” Cement replacement materials, Swamy, R. N., ed., Surrey University Press, Guildford, England.
Della, V. P., Kühn, I., and Hotza, D. (2002). “Rice husk ash as an alternate source for active silica production.” Mater. Lett.MLETDJ, 57(4), 818–821.
Feng, Q., Yamamichi, H., Shoya, M., and Sugita, S. (2004). “Study on the pozzolanic properties of rice husk ash by hydrochloric acid pretreatment.” Cem. Concr. Res.CCNRAI, 34(3), 521–526.
Ferro, W. P., and Andrade, L. G. (2006). “Utilization of rice husk ash as filler for polyamide 6 and 6.6.” Proc., 41st Int. Symp. on Macromolecules–IUPAC World Polymer Congress Macro 2006, Int. Union of Pure and Applied Chemistry (IUPAC), Research Triangle Park, NC.
Food and Agricultural Organization of the United Nations (FAO). (2011). “MUD history.” FAOSTAT, 〈http://faostat.fao.org/site/567/default.aspx〉 (Sep. 15, 2011).
Hasparyk, N. P., Monteiro, P. J. M., and Carasek, H. (2000). “Effect of silica fume and rice husk ash on alkali-silica reaction.” Mater. J.AMAJEF, 97(4), 486–492.
James, J., and Subbararao, M. (1986). “Characterization of Silica in rice husk ash.” Am. Ceram. Soc. Bull.ACSBA7, 65(8), 1177–1180.
Jenkins, R. (1999). X-ray fluorescence spectroscopy, 2nd Ed., Wiley, New York.
Kapur, P. C. (1981). “TiB: Tube-in-basket rice husk burner for producing energy and reactive rice-husk ash.” Proc., ESCAP/RCTT Workshop on Rice-Husk Ash Cement, New Delhi, India.
Krishnarao, R. V., Subrahmanyam, J., and Kumar, T. J. (2001). “Studies on the formation of black particles in rice husk silica ash.” J. Eur. Ceram. Soc.JECSER, 21(1), 99–104.
Luxan, M. P., Mndruga, M., and Seavedra, J. (1989). “Rapid evaluation of pozzolanic activity of natural products by conductivity measurement.” Cem. Concr. Res.CCNRAI, 19(1), 63–68.
Mehta, P. K. (1977). “Properties of blended cements, cements made from rice husk ash.” J. ACIJACIAX, 74(9), 440–442.
Mehta, P. K. (1979). “The chemistry and technology of cements made from rice husk ash.” Proc., UNIDO/ESCAP/RCTT Workshop on Rice-Husk Ash Cement, Peshavar, Pakistan, 113–122.
Mindess, S., Young, J. F., and Darwin, D. (2003). Concrete, 2nd Ed., Prentice Hall, Upper Saddle River, NJ.
Muthadhi, A., Anitha, R., and Kothandaraman, S. (2007). “Rice husk ash—properties and its uses: A review.” JECVAWJ. Inst. Eng. (India) Civ. Eng. Div., 88(5), 50–56.
Nair, D. G., Fraaij, A., Klaassen, A. K., and Kentgens, P. M. (2008). “A structural investigation relating to the pozzolanic activity of rice husk ashes.” Cem. Concr. Res.CCNRAI, 38(6), 861–869.
Nair, D. G., Jagadish, K. S., and Fraaij, A. (2006). “Reactive pozzolanas from rice husk ash: An alternative to cement for rural housing.” Cem. Concr. Res.CCNRAI, 36(6), 1062–1071.
Norrish, K., and Hutton, J. (1969). “An accurate X-ray spectrographic method for the analysis of a wide range of geological samples. Geochim. Cosmochim. ActaGCACAK, 33(4), 431–453.
Rodriguez, G. (2006). “Strength development of concrete with rice-husk ash.” Cem. Concr. Comp.CCOCEG, 28(2), 158–160.
Siddique, R. (2009). Waste materials and by-products in concrete, 2nd Ed., Springer, New York.
Snyder, K. A., Feng, X., Keen, B. D., and Mason, T. O. (2003). “Estimating the electrical conductivity of cement paste pore solutions from , , and concentrations.” Cem. Concr. Res.CCNRAI, 33(6), 793–798.
Yalcin, N., and Sevin, V. (2001). “Studies on silica obtained from rice husk.” Ceram. Int.CINNDH, 27(2), 219–224.
Yu, Q., Sawayama, K., Sugita, S., Shoya, M., and Isojima, Y. (1999). “The reaction between rice husk ash and solution and the nature of its product.” Cem. Concr. Res.CCNRAI, 29(1), 37–43.
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© 2012. American Society of Civil Engineers.
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Received: Apr 19, 2011
Accepted: Nov 10, 2011
Published online: Nov 12, 2011
Published in print: Jun 1, 2012
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