Abstract
The need for quality control in the ready-mixed concrete industry is increasingly emerging as a tool for ensuring the achievement of the highest possible quality in the produced concrete with the lowest practical price. In typical construction projects, the compressive concrete strength is the most important criterion in judging the acceptability of a produced concrete batch from a given plant. Variability in the compressive strength of the concrete batches of any plant is inevitable. Such variability has led researchers in the field of quality control to analyze the statistics of these results in order to draw conclusions about the quality of the concrete plant and ways to improve it. Ultimately, the goal of the owner of a structure being constructed, the engineer in charge of its construction, and hence the quality control professionals is the safety of the structure that the concrete is intended to be used for constructing. The quality of the concrete can be viewed as a means for the end goal, the structural safety. Therefore, a more informed decision could be made regarding the quality of the concrete if the structural safety is used as an indicator. Structural reliability theory and tools are commonly used nowadays for the quantification of structural safety under uncertainty. In this study, an approach for classifying the quality of ready-mixed concrete using structural reliability as a metric will be proposed. The influence of the statistical parameters of concrete on the structural reliability of the structural elements constructed with this concrete is investigated. Classification charts for classifying the quality of concrete based on the values of its statistical parameters and with reference to the attained structural reliability are proposed.
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Acknowledgments
The present research work has been undertaken within the Bin Laden Research Chair on Quality and Productivity Improvement in the Construction Industry funded by the Saudi Bin Laden Constructions Group; this is gratefully acknowledged. The opinions and conclusions presented in this paper are those of the authors and do not necessarily reflect the views of the sponsoring organization.
References
Aichouni, M. (2012). “On the use of basic quality tools for the improvement of the construction industry—A case study of a ready mixed concrete production process.” Int. J. Civ. Environ. Eng., 12(5), 28–35.
Allen, D. E. (1970). “Probabilistic study of reinforced concrete in bending.” ACI J., 67(12), 989–995.
American Concrete Institute (ACI) Committee 214. (2005). “Evaluation of strength test results of concrete (ACI 214R-02).” ACI manual of concrete practice, Farmington Hills, MI.
American Concrete Institute (ACI) Committee 318. (2011). “Building code requirements for structural concrete (ACI 318-11) and commentary.” ACI manual of concrete practice, Farmington Hills, MI.
Ang, A. H.-S., and Tang, W. H. (1984). Probability concepts in engineering planning and design: Decision, risk and reliability, Vol. II, Wiley, New York.
Cornell, C. A. (1969). “A probability based structural code.” ACI J., 66(12), 974–985.
Deming, W. E. (1986). Out of the crisis. Center for advanced engineering study, Massachusetts Institute of Technology, Cambridge, MA.
Ellingwood, B. (1978). “Reliability basis of load and resistance factors for reinforced concrete design.”, National Bureau of Standards, Washington, DC.
Ellingwood, B., Galambos, T., MacGregor, J. G., and Cornell, C. A. (1980). “Development of a probability based load criterion for American national standard A58.”, National Bureau of Standards, Washington, DC.
Hasofer, A. M., and Lind, N. C. (1974). “An exact and invariant first-order reliability format.” J. Eng. Mech. Div., 100(1), 111–121.
Laungrungrong, B., Mobasher, B., Montgomery, D., and Borror, C. M. (2010). “Hybrid control charts for active control and monitoring of concrete strength.” J. Mater. Civ. Eng., 77–87.
Liu, P. L., Lin, H.-Z., and Der Kiureghian, A. (1989). “CALREL user manual.”, Dept. of Civil Engineering, Univ. of California, Berkeley, CA.
MacGregor, J. G. (1976). “Safety and limit states design for reinforced concrete.” Can. J. Civ. Eng., 3(4), 484–513.
MacGregor, J. G. (1983). “Load and resistance factors for concrete design.” ACI Struct. J., 80(4), 279–287.
MacGregor, J. G., Mirza, S. A., and Ellingwood, B. (1983). “Statistical analysis of resistance of reinforced and prestressed concrete members.” ACI J., 80(3), 167–176.
Mirza, S. A., Hatzinikolas, M., and MacGregor, J. G. (1979). “Statistical descriptions of the strength of concrete.” J. Struct. Div., 105(6), 1021–1037.
Nowak, A., and Szerszen, M. (2003a). “Calibration of design code for buildings (ACI 318): Part 1—Statistical models for resistance.” ACI Struct. J., 100(3), 377–382.
Nowak, A., and Szerszen, M. (2003b). “Calibration of design code for buildings (ACI 318): Part 2—Reliability analysis and resistance factors.” ACI Struct. J., 100(3), 383–389.
Pier, J.-C., and Cornell, C. A. (1973). “Spatial and temporal variability of live loads.” J. Struct. Div., 99(5), 903–922.
Thoft-Christensen, P., and Baker, M. (1982). Structural reliability theory and its applications, Springer, New York.
Wight, J., and MacGregor, J. G. (2011). Reinforced concrete: Mechanics and design, 6th Ed., Prentice-Hall, Old Tappan, NJ.
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Published In
Journal of Materials in Civil Engineering
Volume 27 • Issue 5 • May 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: May 14, 2013
Accepted: May 14, 2014
Published online: Aug 7, 2014
Discussion open until: Jan 7, 2015
Published in print: May 1, 2015
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