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Journal of Rehabilitation in Civil Engineerin، جلد ۱۴، شماره ۲، صفحات ۰-۰
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Mechanical Performance of Slag-Based HPFRGC with Varying Silica Fume Replacement and Fiber Types |
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| چکیده انگلیسی مقاله |
As Portland cement production greatly affects the environment, more focus is being placed on using geopolymer concrete (GPC) as an alternative. This study explores the mechanical performance of high-performance fiber-reinforced geopolymer concrete (HPFRGC) using slag-based binders partially replaced with silica fume at levels of 0%, 5%, 10%, and 15%. The effects of incorporating steel and glass fibers at 0.5% and 1% volume fractions on compressive and splitting tensile strengths were also evaluated at 7 and 28 days. Results indicate that 5–10% silica fume replacement enhances compressive and tensile strength, with 10% being optimal. Excessive replacement (15%) reduced strength due to dilution of reactive content. Steel fibers were more effective than glass fibers, particularly at 1% content, yielding up to 12.7% and 38.6% improvements in compressive and tensile strengths, respectively. Moderate benefits were seen from using glass fibers, mainly in tensile performance. Failure pattern analysis showed that fiber-free specimens experienced brittle fractures, while fiber-reinforced mixes exhibited improved crack control and ductility. Overall, the combined use of 10% silica fume and 1% steel fiber offers the best enhancement in mechanical performance, suggesting an effective approach for developing sustainable, high-performance geopolymer concretes. |
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| کلیدواژه‌های انگلیسی مقاله |
Performance Evaluation,High performance fiber reinforced geopolymer concrete,Slag,Silica Fume |
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| نویسندگان مقاله |
Morteza Amooie |
Ph.D. Candidate, Department of Civil Engineering, Guilan University, Rasht, Iran
Ali Sadrmomtazi |
Professor, Faculty of Civil Engineering, Guilan University, Rasht, Iran
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| نشانی اینترنتی |
https://civiljournal.semnan.ac.ir/article_9889_88fe47464c837c72e9bbcff3f6f57011.pdf |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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