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Evaluation on the Applicability of Recycled Fine Aggregate to Precast Concrete Products
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 Title & Authors
Evaluation on the Applicability of Recycled Fine Aggregate to Precast Concrete Products
Kim, Sang-Chel; Park, Do-Kuk; Yoog, Keun-Chang;
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 Abstract
While the amount of construction waste has not been changed much in discharge for last 10 years, the recycled resources refined from construction waste have been mainly applied to low-leveled one such as reclamation, back-fill, road base or subbase and so on. Thus this study addresses the applicability of recycled fine aggregate as a replaceable material in precast concrete. To evaluate the possibility, both of dry and wet processes were adopted as well as steam curing, widely used in the field for rapid producing. Most important experimental parameters were driven through preliminary experiments and were evaluated in terms of concrete properties. It is found from aggregate-replacement tests that all of consistency and strengths of concrete were decreased as the ratio of recycled fine aggregate increased, and the amount of decrease can be estimated using proposed equations. Though the recycled fine aggregate showed a decrease of concrete properties more or less, the applicability in large volume as a constituent of precast product was well noted from experimental results.
 Keywords
Recycled fine aggregate;Precast concrete products;Dry process;Wet process;Steam curing;Strength;
 Language
Korean
 Cited by
 References
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