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Paper Information

Journal:   JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING)   summer 2018 , Volume 31 , Number 2 (22) ; Page(s) 129 To 141.

Effect of Silica Fume and Nano Silica on Mechanical Properties of Fiber-Reinforced Lightweight Concrete

Author(s):  GHASEMZADEH MOUSAVINEJAD S.H., Ghorbani Shemshad sara y.
Lightweight concrete has significant importance due to its special features including weight reduction of structures. This article aims to study the effect of silica fume (SF) and nano silica (Na) on mechanical properties of fiber reinforced concrete containing lightweight scoria aggregates. SF and Na are replaced by different amounts of cement weight. The used amounts of Steel and polypropylene fibers having different length to diameter ratios are different. For this study, seventeen different lightweight mixtures were made and tested for mechanical strengths, water absorption and density. Results show that optimized replacement amount of SF and Na is 10% and 3%, respectively. Steel fiber in comparison to Polypropylene fiber had better effect on mechanical characteristics of lightweight concrete.
Keyword(s): Lightweight Scoria,Silica Fume,Nano Silica,Steel and Polypropylene Fibers,Mechanical Properties
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