Concrete Research and Technology
Online ISSN : 2186-2745
Print ISSN : 1340-4733
ISSN-L : 1340-4733
Study on Measures for the Reduction of the Environmental Impact of Precast Concrete
Kenji KawaiAkihiro FujikiDaiki AkasakiYouichi Tokuhisa
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2014 Volume 25 Pages 35-44

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Abstract
Although, in the design of a structure, structural and durability performance is considered, environmental performance such as CO2 emissions is rarely considered. This study investigated measures for the reduction of the environmental impact of precast concrete production through the use of industrial waste, industrial byproducts and recycled aggregates as well as omitting steam curing on hot days. It was found that SOx emissions can be reduced by about 14% by not performing stream curing for 45.7 days in a year, and that CO2 emissions can be reduced by about 18% by replacing 20% of ordinary portland cement with fly ash and 30% of fine aggregate with molten-slag fine aggregate.
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© 2014 Japan Concrete Institute
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