Enhancing the Hardened Properties of Recycled Concrete (RC) through Synergistic Incorporation of Fiber Reinforcement and Silica Fume
| Autor: | Hisham Hafez, Liaqat Ali Qureshi, Babar Ali, Rawaz Kurda, Ali Raza, Hussein Mohammed, Hawreen Ahmed |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Yield (engineering) silica fume Silica fume Glass fiber 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology lcsh:Technology Article 0201 civil engineering law.invention law 021105 building & construction Ultimate tensile strength General Materials Science Fiber Composite material lcsh:Microscopy lcsh:QC120-168.85 lcsh:QH201-278.5 lcsh:T Durability Portland cement recycled aggregate tensile strength Properties of concrete lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering synergistic effects permeability lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 fiber |
| Zdroj: | Materials Materials, Vol 13, Iss 4112, p 4112 (2020) Volume 13 Issue 18 |
| ISSN: | 1996-1944 |
| Popis: | Portland cement concrete is fragile in tension and it has numerous negative impacts on the environment. To deal with these issues, both fiber reinforcement and recycled materials can be utilized to manufacture sustainable and ductile concrete. In this study, the synergistic effects of high-performance mineral admixture silica fume and glass fiber reinforcement were investigated on the hardened properties of RC. For this purpose, two concrete mix families, namely, NC and RC were prepared. To understand the benefits of synergistic utilization of glass fiber and silica fume, in both NC and RC, 0.5% glass fiber was incorporated with three different levels of silica fume. i.e., 0%, 5%, and 10%. Both strength and permeability-related durability properties were investigated. Results revealed that combined incorporation of 0.5% fiber and 10% silica fume can help in the production of RC having better mechanical and durability performance compared to reference &ldquo NC&rdquo Simultaneous incorporation of silica fume and glass fiber produces a combined effect greater than their individual effects on both mechanical and permeability properties of concrete. Silica fume plays a very dominant and positive role in the development of CS, WA, and CIPR of RC, whereas glass fiber plays a vital role in upgrading STS and FS of RC and whereas, with the addition of 0.5% glass fiber, RC can yield 8&ndash 9 times higher flexural toughness than that of the plain NC. |
| Databáze: | OpenAIRE |
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