Journal
JOURNAL OF BUILDING ENGINEERING
Volume 25, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jobe.2019.100791
Keywords
High strength concrete (HSC); Basic oxygen steel-making (BOS) slag; Nano-silica; Mechanical properties; Durability
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This study presents the results of an experimental evaluation of the performance of high strength concrete (HSC) with basic oxygen steel-making (BOS) slag and nano-silica respectively used as a partial replacement of sand and cement. The properties of fresh and hardened concrete specimens containing 25%, 50%, 75%, and 100% BOS as partial replacement of sand and 2% of cement replaced with nano-silica were evaluated. According to the results, concrete samples containing nano-silica with higher BOS percentages, demonstrated improvements in strength and durability properties, while workability was reduced. For example, at 50% BOS content, about 18% increase in compressive strength and 50% reduction in water absorption was observed, while slump was reduced by 40%.
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