Influence of Fineness of Fly Ash on the Carbonation and Electrical Conductivity of Concrete
Publication: Journal of Materials in Civil Engineering
Volume 23, Issue 9
Abstract
The paper presents an investigation on the influence of the fineness of fly ash on the carbonation and electrical conductivity of concrete. Fly ash collected from three thermal power stations in India (with a Blaine’s fineness of 200, 255, and , respectively) were used for this study. The study also involved three replacement levels (15, 25, and 35% of cementitious materials) for each fly ash sample. Accelerated carbonation studies were performed on specimens cured for 3, 7, and 28 days. The electrical conductivity of concrete was evaluated by measuring the charge passed in coulomb (per ASTM C1202) on 28-day-cured specimens. The test results indicated that the carbonation depth of concrete increased as fly ash replacement increased. However, the carbonation resistances of concrete increased with increased fly ash fineness. Furthermore, the carbonation resistance of concrete increased significantly with a prolonged curing time. The coulomb charge passed through the concrete at an age of 28 days was significantly reduced with the incorporation of fly ash, and the magnitude of reduction increased with increased in fly ash fineness and replacement level.
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References
ASTM. (2002). “Standard test method for electrical indication of concrete’s ability to resist chloride ion penetration.” C1202, Philadelphia.
ASTM. (2008). “Standard specification for coal fly ash and raw or calcined natural pozzolan for use in concrete.” C618, Philadelphia.
Basheer, P. A. M., Chidiac, S. E., and Long, A. E. (1996). “Predictive models for deterioration of concrete structures.” Constr. Build. Mater., 10(1), 27–37.
Bureau of Indian Standards (BIS). (1963). “Methods of test for aggregates for concretes.” IS2386-1963, New Delhi, India.
Bureau of Indian Standards (BIS). (1970). “Specification for coarse and fine aggregates from natural sources for concrete.” IS383-1970, New Delhi, India.
Bureau of Indian Standards (BIS). (1996). “Method of physical tests for hydraulic cement.” IS4031-1996, New Delhi, India.
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. Concr. Res., 34(7), 1087–1092.
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., 27(4), 425–428.
DIFFRACplus TOPAS [Computer software]. Bruker AXS, Madison, WI.
Erdogdu, K., and Turker, P. (1998). “Effect of fly ash particle size on compressive strength of portland cement fly ash mortars.” Cem. Concr. Res., 28(9), 1217–1222.
Haque, M. N., and Kawamura, M. (1993). “Carbonation and chloride-induced corrosion of reinforcement in fly ash concretes.” ACI Mater. J., 89(1), 41–48.
Ihekwaba, N. M., Hope, B. B., and Hansson, C. M. (1996). “Carbonation and electrochemical chloride extraction from concrete.” Cem. Concr. Res., 26(7), 1095–1107.
Khan, M. I., and Lynsdale, C. J. (2002). “Strength, permeability and carbonation of high performance concrete.” Cem. Concr. Res., 32(1), 123–131.
Malhotra, V. M., and Mehta, P. K. (1996). “Pozzolanic and cementitious materials.” Advances in concrete technology, Vol. 1, Taylor and Francis, London.
Mehta, P. K. (1987). “Studies on the mechanisms by which condensed silica fume improves the properties of concrete: Durability aspects.” Proc., Int. Workshop on Condensed Silica Fume in Concrete, CANMET Ottawa, Canada, 1–17.
Mehta, P. K. (1998). “Role of pozzolanic and cementitious material in sustainable development of the concrete industry.” Proc., 6th Int. Conf. on the Use of Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete, ACI SP-178, American Concrete Institute (ACI), Farmington Hills, MI, 1–20.
Neville, A. M., and Brooks, J. J. (1981). Properties of concrete, Pearson Education, London.
RILEM Recommendations. (1988). “CPC-18 Measurement of hardened concrete carbonation depth.” Mater. Struct., 21(6), 453–455.
Sulapha, P., Wong, S. F., Wee, T. H., and Swaddiwudhipong, S. (2003). “Carbonation of concrete containing mineral admixtures.” J. Mater. Civ. Eng., 15(2), 134–143.
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Published In
Journal of Materials in Civil Engineering
Volume 23 • Issue 9 • September 2011
Pages: 1365 - 1368
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Dec 21, 2010
Accepted: Feb 16, 2011
Published online: Aug 15, 2011
Published in print: Sep 1, 2011
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