Shear Behavior of High-Volume Fly Ash Concrete versus Conventional Concrete
Publication: Journal of Materials in Civil Engineering
Volume 25, Issue 10
Abstract
The production of portland cement—the key ingredient in concrete-generates a significant amount of carbon dioxide. However, due to its incredible versatility, availability, and relatively low cost, concrete is the most consumed manufactured material on the planet. One method of reducing concrete’s contribution to greenhouse gas emissions is the use of fly ash to replace a significant amount of the cement. An experimental investigation was conducted to study the shear strength of full-scale beams constructed with both high-volume fly ash concrete (HVFAC)—concrete with at least 50% of the cement replaced with fly ash—and conventional concrete (CC). This experimental program consisted of 16 beams (12 without shear reinforcing and four with shear reinforcing in the form of stirrups). Additionally, three different longitudinal-reinforcement ratios were evaluated within the test matrix. The beams were tested under a simply supported four-point loading condition. The experimental shear strengths of the beams were compared with the shear provisions of both American Concerte Institute Committee 318 and AASHTO LRFD Furthermore, statistical data analyses (both parametric and nonparametric) were performed to evaluate whether or not there is any statistically significant difference between the shear strength of the HVFAC and the CC beams. Results of these statistical tests show that the normalized shear capacity of the HVFAC is higher than the CC for the beams tested in this investigation.
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Acknowledgments
The authors gratefully acknowledge the financial support provided by the Missouri Department of Transportation (MoDOT) and the National University Transportation Center (NUTC) at Missouri University of Science and Technology (Missouri S&T). The authors would also like to thank the support staff in the Department of Civil, Architectural and Environmental Engineering and Center for Infrastructure Engineering Studies at Missouri S&T for their efforts. The conclusions and opinions expressed in this paper are those of the authors and do not necessarily reflect the official views or policies of the funding institutions.
References
AASHTO. (2007). AASHTO LRFD bridge design specifications, 4th Ed., Washington, DC.
American Concrete Institute (ACI) Committee 211. (1993). “Guide for selecting proportions for high-strength concrete with portland cement and fly ash.” ACI Mater. J., 90(3), 272–283.
American Concrete Institute (ACI) Committee 232. (2003). “Use of fly ash in concrete.” American Concrete Institute, Farmington Hills, MI.
American Concrete Institute (ACI) Committee 318. (2008). “Building code requirements for structural concrete ACI 318-08 and commentary 318R-08.”, Farmington Hills, MI.
ASTM. (2010). “Standard test method for flexural strength of concrete (using simple beam with third-point loading.” ASTM C 78/C 78M-10, West Conshohocken, PA.
ASTM. (2011). “Standard test method for splitting tensile strength of cylindrical concrete.” ASTM C 496/C 496M-11, West Conshohocken, PA.
ASTM. (2012a). “Standard specification for coal fly ash and raw or calcined natural pozzolan for use in concrete.” ASTM C 618, West Conshohocken, PA.
ASTM. (2012b). “Standard specification for deformed and plain carbon-steel bars for concrete reinforcement.” ASTM A 615/A 615-12, West Conshohocken, PA.
ASTM. (2012c). “Standard test method for compressive strength of cylindrical concrete specimens.” ASTM C 39/C 39M-12, West Conshohocken, PA.
Berry, E. E., Hemmings, R. T., Zhang, M. H., Cornelious, B. J., and Golden, D. M. (1994). “Hydration in high-volume fly ash binders.” ACI Mater. J., 91(4), 382–389.
Bilodeau, A., and Malhotra, V. M. (2000). “High-volume fly ash system: concrete solution for sustainable development.” ACI Mater. J., 97(1), 41–48.
Davis, R. E., Carlson, R. W., Kelly, J. W., and Davis, H. E. (1937). “Properties of cements and concretes containing fly ash.” ACI J. Proc., 33(5), 577–612.
Dunstan, E. R. (1976). “Performance of lignite and sub-bituminous fly ash in concrete.”, U.S. Bureau of Reclamation, Denver.
Dunstan, E. R. (1980). “A possible method for identifying fly ashes that will improve the sulfate resistance of concretes.” Cem., Concr., Aggregates, 2(1), 20–30.
Dunstan, E. R. (1984). “Fly Ash and Fly Ash Concrete.”, Bureau of Reclamation, Denver.
Gopalan, M. K. (1993). “Nucleation and Pozzolanic Factors in Strength Development of Class F Fly Ash Concrete.” ACI Mater. J., 90(2), 117–121.
Hanle, L., Jayaraman, K., and Smith, J. (2012). “ Emissions Profile of the U.S. Cement Industry.” 〈http://infohouse.p2ric.org/ref/43/42552.pdf〉 (Jul. 19, 2013).
Koyama, T., Sun, Y. P., Fujinaga, T., Koyamada, H., and Ogata, F. (2008). “Mechanical Properties of Concrete Beam Made of a Large Amount of Fine Fly Ash.” Proc. for the 14th World Conf. on Earthquake Engineering, Mira Digital Publishing, St. Louis, MO.
Malhotra, V. M. (1986). “Superplasticized Fly Ash Concrete for Structural Applications.” Concr. Int., 8(12), 28–31.
Marland, G., Boden, T. A., and Andres, R. J. (2008). “Global, Regional, and National Fossil Fuel Emissions. In Trends: A Compendium of Data on Global Change.” 〈http://cdiac.ornl.gov/trends/emis/overview.html〉 (Jul. 19, 2013).
Minitab 15 Statistical Software [Computer software]. Incorporation, Minitab.
Myers, J. J., and Carrasquillo, R. L. (1999). “Mix Proportioning for High-Strength HPC Bridge Beams.” American Concrete Institute Special Publication 189, American Concrete Institute, Detroit, MI, 37–56.
Rao, R. M., Mohan, S., and Sekar, S. K. (2011). “Shear Resistance of High Volume Fly ash Reinforced Concrete Beams without Web Reinforcement.” Int. J. Civ. Struct. Eng., 1(4), 986–993.
Reineck, K. H., Kuchma, D. A., Kim, K. S., and Marx, S. (2003). “Shear database for reinforced concrete members without shear reinforcement.” ACI Struct. J., 100(2), 240–249.
Taylor, H. P. J. (1970). “Investigation of the forces carried across cracks in reinforced concrete beams in shear by interlock of aggregate.”, Cement and Concrete Association, London, 447.
Taylor, H. P. J. (1972). “Shear strength of large beams.” J. Struct. Div., 98(ST11), 2473–2489.
Taylor, H. P. J. (1974). “The fundamental behavior of reinforced concrete beams in bending and shear.” ACI Shear Reinforce. Concr., SP-42, 43–77.
USGS. (2012). “Minerals Yearbook, Cement, U.S. Geological Survey.” U. S. Dept. of the Interior, 38–39.
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© 2013 American Society of Civil Engineers.
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Received: May 17, 2012
Accepted: Sep 27, 2012
Published online: Oct 1, 2012
Discussion open until: Mar 1, 2013
Published in print: Oct 1, 2013
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