Cement-Matrix Composites Using CFRP Waste: A Circular Economy Perspective Using Industrial Symbiosis
| Autor: | Pierluca Vitale, Rosanna Napolitano, Francesco Colella, Costantino Menna, Domenico Asprone |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
cement
Materials science 02 engineering and technology 010501 environmental sciences lcsh:Technology 01 natural sciences Article Flexural strength carbon fibers Industrial symbiosis industrial symbiosis General Materials Science Fiber Composite material lcsh:Microscopy Life-cycle assessment lcsh:QC120-168.85 0105 earth and related environmental sciences Carbon fiber reinforced polymer Cement lcsh:QH201-278.5 lcsh:T structural behavior 021001 nanoscience & nanotechnology lcsh:TA1-2040 life cycle assessment (LCA) Volume fraction recycle processing lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering Mortar lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 14, Iss 1484, p 1484 (2021) Materials Volume 14 Issue 6 |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma14061484 |
| Popis: | This study aims to provide a mitigation strategy for reducing the economic and environmental impacts of carbon fiber wastes deriving from automotive industry. Recycling and reuse in the construction industry is proposed, according to an industrial symbiosis within a circular economy perspective. Specifically, the process consists of repurposing carbon fiber reinforced polymer (CFRP) scraps/waste into new cement-matrix composites, for which the resulting benefits, in terms of mechanical and environmental performance, are herein described. An experimental campaign, starting with a specific heat treatment of CFRP sheets and an accurate dimensional distribution analysis of the short carbon fibers, is presented. The influence of the fiber content and length on both the workability and the mechanical performance of cement-based carbon fiber reinforced mortars is also evaluated. A reduced amount of either sand or cement (up to 8% and 12.8% in volume, respectively) is also considered in the mix design of the fiber reinforced mortars and derives from the substitution of the sand or binder with an equivalent volume of CFRP fibers. The results show a satisfactory increase in compressive and flexural strength in the range 10–18% for the samples characterized by a volume fraction of fibers of approximately 4% and having a 2–5 mm length. Finally, a life cycle assessment (LCA, 14040/14044) was carried out to quantify the environmental burden reductions associated with the implementation of the proposed symbiotic scheme. |
| Databáze: | OpenAIRE |
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