Splitting tensile strength of cement-stabilized and surgical face mask fiber-reinforced sand
| Autor: | H. MolaAbasi |
|---|---|
| Jazyk: | perština |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | مهندسی عمران شریف, Vol 40, Iss 1, Pp 125-133 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2676-4768 2676-4776 |
| DOI: | 10.24200/j30.2023.62194.3210 |
| Popis: | The tendency towards reinforcement of cement-treated sands with the inclusion of fibers has increased in recent years. This is due to the fact that fibers reduce the brittle behavior and improve the mechanical properties of the sandy soil samples. Since 2019, because of the coronavirus pandemic, the use of disposable surgical face masks has become increasingly popular among the public, and their burial, reproduction, and reuse have become one of the major environmental problems. Therefore, in this research, an attempt has been made to reuse the surgical face fibers in the application of cement-reinforced sands. In this regard, samples with 2, 4, 6, and 8% cement contents, reinforced with different amounts of fibers (0, 0.25, 0.5, and 0.75%) in different relative densities (35%, 50%, and 70% sand) were prepared and after 7 days of the curing period, their tensile behavior using brazilian tensile splitting tests. The results showed that the addition of cement percentage and increasing relative density have a significant effect on improving the tensile strength index of cement sands. The percentage of surgical face mask fibers 0.25% is the optimal amount of added fibers (the maximum tensile strength in this percentage of fibers). The definition of the key parameter (the ratio of porosity to cement content) and several empirical relations for estimating the tensile strength of reinforced and reinforced samples with very good accuracy are presented. |
| Databáze: | Directory of Open Access Journals |
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