Effect of Fly Ash Fineness on Temperature Rise, Setting, and Strength Development of Mortar
Publication: Journal of Materials in Civil Engineering
Volume 24, Issue 5
Abstract
This paper investigates the effects of the fineness and replacement ratio of fly ash on the temperature rise and setting time, and compressive, tensile, and flexural strength of mortar mixtures. Three types of fly ash with Blaine finenesses of (40F), (60F), and (90F) were used to replace Portland cement at replacement ratios of 0 (which was the control mix), 15, 30, 45, and 60% by binder mass. Test results demonstrate that using fly ash as a cement replacement resulted in a reduction in the maximum temperature rise in mortar regardless of the fineness of the fly ash. In this investigation, 15 fly ash replacement caused a reduction in the peak temperature of about 4 to 6°C in the mortar. The setting time of fly ash mixes where 15 and 30% of the cement was replaced with fine fly ashes was faster than that of the control mix. The compressive strength of mortar mixes using finer fly ashes (60F and 90F) was significantly improved compared to that of the 40F fly ash mortar.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The authors wish to acknowledge the support provided by SAMPYO Co., South Korea.
References
American Concrete Institute (ACI). (2003). “Use of fly ash in concrete.” American Concrete Institute, Detroit.
Atis, C. D. (2002). “Heat evolution of high-volume fly ash concrete.” Cem. Concr. Res.CCNRAI, 32(5), 751–756.
Baoju, L., Youjun, X., Shiqiong, Z., and Qianlian, Y. (2000). “Influence of ultrafine fly ash composite on the fluidity and compressive strength of concrete.” Cem. Concr. Res.CCNRAI, 30(9), 1489–1493.
Chindaprasirt, P., Homwuttiwong, S., and Sirivivatnanon, V. (2004). “Influence of fly ash fineness on strength, drying shrinkage and sulfate resistance of blended cement mortar.” Cem. Conc. Res.CCNRAI, 34(7), 1087–1097.
Chindaprasirt, P., Jaturapitakkul, C., and Sinsiri, T. (2005). “Effect of fly ash fineness on compressive strength and pore size of blended cement paste.” Cem. Concr. Compos.CCOCEG, 27(4), 425–428.
Davis, R. E., Carlson, R. W., Kelly, J. W., and Davis, H. E. (1937). “Properties of cement and concretes containing fly ash,” Mater. J.AMAJEF, 33(3), 577–612.
Erdoğdu, K., and Türker, P. (1998). “Effects of fly ash particle size on strength of Portland cement fly ash mortars.” Cem. Concr. Res.CCNRAI, 28(9), 1217–1222.
Gopalan, M. K. (1993). “Nucleation and pozzolanic factors in strength development of class F fly ash concrete.” Mater. J.AMAJEF, 90(2), 117–121.
Isaia, G. C., Gastaldini, A. L. G., and Moraes, R. (2003). “Physical and pozzolanic action of mineral additions on the mechanical strength of high performance concrete.” Cem. Concr. Compos.CCOCEG, 25(1), 69–76.
Korean Standards Association. (2001). “Testing method for tensile strength of hydraulic cement mortars.” KS L5104-01, Seoul.
Malhotra, V. M., and Ramezanianpour, A. A. (1994). Fly ash in concrete, 2nd Ed., CANMET, Canada.
Mehta, P. K., and Monteiro, P. J. (2006). Concrete: Microstructure, properties, and materials, 3rd Ed., McGraw-Hill, New York.
Payá, J., Monzó, J., Borrachero, M. V., and Peris-Mora, E. (1995). “Mechanical treatment of fly ashes. I: Physico-chemical characterization of ground fly ashes.” Cem. Concr. Res.CCNRAI, 25(7), 1469–1479.
Payá, J., Monzó, J., Borrachero, M. V., Peris-Mora, E., and Amahjour, F. (2000). “Mechanical treatment of fly ashes. IV: Strength development of ground fly ash-cement mortars cured at different temperatures.” Cem. Concr. Res., 30(4), 543–551CCNRAI.
Slanicka, S. (1991). “The influence of fly ash fineness on the strength of concrete.” Cem. Concr. Res., 21(2–3), 285–296CCNRAI.
Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 24 • Issue 5 • May 2012
Pages: 499 - 505
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Mar 15, 2010
Accepted: Oct 27, 2011
Published online: Nov 3, 2011
Published in print: May 1, 2012
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.