Performance of recycled ceramic waste as aggregates in hot mix asphalt (HMA)
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Ceramic waste materials from the production of titles has increased over the years. Preliminary studies on the properties of ceramics showed that this material can be incorporated into asphalt mixtures as aggregates. Laboratory tests were conducted to evaluate the feasibility of utilizing ceramic materials from tile manufacturing firms. A study was undertaken to look into the performance of crushed ceramics that were incorporated in asphalt mixtures to replace the conventional granite aggregates from sizes 5.0 mm down including the 75 micron filler. The replacement was done proportionally with a 0, 20, 40, 60, 80, and 100% percent by weight of granite aggregates. The outcome of the study showed that the performance of recycled ceramic aggregates in hot mix asphalt (HMA) reached an optimum at about 20% which means there is a great potential for the use of it in asphalt mixtures. The Marshall stability showed an increment of about 25% while the resilient modulus strength improved by 13.5% as compared with the control specimen. All samples were analyzed at various proportions of ceramic–granite aggregate combination and were observed that a 20% use of 5 mm down ceramic aggregates blended with granite aggregates produce higher strength HMA.
KeywordsCeramic waste Hot mix asphalt Marshall quotient Resilient modulus
The authors wish to thank Kajang Rock Quarry and the Selayang Tile Manufacturing Company for providing aggregates and waste ceramic tiles for the study.
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