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标题：Using Optimizing Aggregate Packing for Replacement of Coarse Aggregate with Industrial Waste Slag in Concrete
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作者：G.Kalaivani ; T. Tamizhazhagan
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：3
页码：4386
DOI：10.15680/IJIRSET.2016.0503240
出版社：S&S Publications
摘要：Concrete is the third largest material consumed by human beings after food and water as per WHO.Concrete plays a vital role in the design and construction of the nation’s infrastructure. Almost three quarters of thevolume of concrete is composed of aggregates. These are obtained from natural rocks and river beds, thus degradingthem slowly. This issue of environmental degradation, and need for aggregates demands for the usage of any otheralternative source. Thus the concept of replacement of coarse aggregate with steel slag seems to be promising.Thisstudy presents an evaluation of steel slag aggregate concrete in comparison with the conventional natural aggregateconcrete. Hardened concrete consist of more than 70% aggregate. Due to the high demand in building construction andthe increase of the amount of disposed waste material, suppliers and researchers are exploring the use of alternativematerials which could preserve natural sources and save the environment. In this study, steel slag was used as anaggregate replacement in conventional concrete mixes. Steel slag which is mainly consists of calcium carbonate isproduced as a by-product during the oxidation process in steel industry. Steel slag was selected due to itscharacteristics, which are almost similar to conventional aggregates and the fact that it is easily obtainable as a byproductof the steel industry. As a result, utilization of steel slag will save natural resources and clean environment.Furthermore, particle packing analysis is made to optimize the gradation of coarse aggregate which would decrease thecement requirement and increase the density of packing which would result in its improved performance in terms ofstrength and other parameters.
关键词：steel slag;aggregate; concrete; industrial waste slag