Optimal Mixture Design of Mix-Wasted Tile Aggregates for Reducing Pavement Surface Temperature
Publication: Journal of Materials in Civil Engineering
Volume 27, Issue 9
Abstract
The heat generated from dark-colored asphalt pavement contributes to the rise in surface temperature and results in the formation of an environmental problem known as urban heat island. In this paper, an approach was developed to optimize the mixture design of experiment (DOE) for the mixed type of crushed waste tile aggregates in developing cool-pavement coating materials that could reduce the surface temperature of pavement. Furthermore, the mean temperature difference, , was determined by comparing the 16 runs of the suggested design model with the conventional asphalt model. Three types of wasted tile aggregates were used in this study: full body porcelain (FBP), monoporosa or ceramic glaze (MP), and porcelain glaze (PG). A linear model was formed as a function of mixed-tile fraction, and the ANOVA analysis showed that the special cubic term used for this model is significant. The diagnostics of the model were validated using box-cox plot and normal plot of residuals. Finally, the model was optimized to predict the optimum mixture of different types of tiles to produce the highest value of by proposing two solutions from the design mix. Accordingly, the values of obtained are 4.9 and 3.1°C, respectively, as per the first and second solution using 100% of FBP and MP. In conclusion, the optimum mixture DOE is reliable and can be used to optimize the composition of the proposed mixed type of tile aggregates for obtaining higher values of , which is necessary for developing the coating materials.
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Acknowledgments
A special thanks to our local and international collaborators, Malaysian Mosaic Berhad (Malaysia) for supplying the wasted tile materials and the Tajimi General Constructors Association together with Asset Construction (Japan) for being involving during the construction of the prototype and for their financial support. The authors would also like to thank the Ministry of Higher Education, Malaysia, for their financial support of the research grant, Exploratory Research Grant Scheme (ERGS).
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Information & Authors
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Published In
Journal of Materials in Civil Engineering
Volume 27 • Issue 9 • September 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Apr 1, 2014
Accepted: Sep 12, 2014
Published online: Nov 4, 2014
Discussion open until: Apr 4, 2015
Published in print: Sep 1, 2015
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