Nano Silica and Micro Silica Effect on Mechanical Attributes of Ferrochrome Slag Based Geopolymer
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Tarih
2020
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info:eu-repo/semantics/openAccess
Özet
Considering global trends in sustainable and green development as well as the major drawbacks of conventionalhydraulic cement, accelerate attempt for finding a suitable alternative and likely cause further development ofgeopolymeric cements in future. Influences of Nano scale Materials in improving the mechanical properties ofordinary Portland cement have been obviously proved. Despite the widespread use of these materials in differentfields of science, for instance, chemicals engineering, materials engineering and even ordinary Portland cement,the effect of Nano scale materials in geopolymers has not been investigated deservedly. The purpose of this studyis creating bridges to mitigate these gaps and shortcomings. Very fine silica particles (micro and Nano-silica)effects in ferrochrome slag based geopolymer have been evaluated in this research. Elazığ ferrochrome slag wasused as the main aluminosilicate source and then it was blended with Nano silica or silica fume in little amountsin order to accelerate geopolymerization. Nano-silica and silica fume have been used at 2,4,6,8 and 10% of totalbinder weight in this study due to probe fine silica effect on the mechanical specification of produced materialsuch as compressive strength, Static modulus of elasticity, Tensile Strength and microstructural change. Theexperimental results show all of these mention mechanical properties have been improved with adding fine silicain geopolymer mixes in optimum percentage of total binder weight. The best percentage of fine silica partialreplacement instead of FS is 6% at all of silica fume and three Nano particle size (15, 30 and 45 nm). SEM imagesassessment demonstrated homogenous and denser texture with acceptable chemical bonds improvements forsamples with optimum Nano-silica dosage. Compressive strength increase can be explained by densification ofthe matrix texture by using of Nano-silica and silica fume at optimum dosage.
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Düzce Üniversitesi Bilim ve Teknoloji Dergisi
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Cilt
8
Sayı
1
