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Performance of sustainable high strength concrete with basic oxygen steel-making (BOS)slag and nano-silica

Zareei, S. A ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jobe.2019.100791
  3. Publisher: Elsevier Ltd , 2019
  4. Abstract:
  5. 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%. © 2019
  6. Keywords:
  7. Basic oxygen steel-making (BOS)slag ; Durability ; High strength concrete (HSC) ; Nano-silica ; Cements ; Compressive strength ; High strength steel ; Mechanical properties ; Slags ; Steelmaking ; Water absorption ; Basic oxygen steel makings ; Durability property ; Experimental evaluation ; Hardened concrete ; High strength concretes ; In-water absorption ; Nano Silica ; Partial replacement ; High performance concrete
  8. Source: Journal of Building Engineering ; Volume 25 , 2019 ; 23527102 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S2352710218311951