Temat: recycled steel fibres - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: On the Strain Rate Sensitivity of Fibre-Reinforced Self-Compacting Concrete
Autorzy:: Pająk, Małgorzata
Janiszewski, Jacek
Powiązania:: https://bibliotekanauki.pl/articles/38888160.pdf
Data publikacji:: 2022
Wydawca:: Instytut Podstawowych Problemów Techniki PAN
Tematy:: split Hopkinson pressure bar
recycled steel fibres
self-compacting concrete
Opis:: This study investigates the characteristics of self-compacting concrete (SCC) reinforced with recycled fibres and their combination with polypropylene fibres, which can be applied to build protective structures. The split Hopkinson pressure bar (SHPB) method was used to subject the mixtures to high strain rates in the range from 140 to 200 s⁻¹, corresponding to impact loads. It was found that the strain rate sensitivity of both types of mixtures was comparable. The failure pattern confirmed the role of fibres in carrying the loads for strain rates below around 100 ^s−1.
Źródło:: Engineering Transactions; 2022, 70, 3; 203-220
0867-888X
Pojawia się w:: Engineering Transactions
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Cost-Benefit Analysis of Using Recycled Coarse Aggregate In Plain and Fiber Reinforced Concrete
Autorzy:: Awchat, Ganesh Deoraoji
Powiązania:: https://bibliotekanauki.pl/articles/2023312.pdf
Data publikacji:: 2021
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: compressive strength
recycled aggregate concrete
natural aggregates concrete
steel fibres
state schedule of rates
Opis:: The tendency of demolition has increased to improve economic gains, functional and structural performance, and unloading expenses due to the inaccessibility of an appropriate site in a nearby area. As a result, effective utilization of construction and demolition waste materials in the form of a Recycled Coarse Aggregate of 20 mm & 10 mm is possible while conserving non-renewable natural resources. Even though recycled coarse aggregate (RCA) is a cost-effective material that provides solutions to solid waste management, it is also viewed as second-rate in terms of its basic properties compared to natural coarse aggregate (NCA). This study attempted to design two mix proportions for natural aggregate concrete (NAC) and recycled aggregate concrete (RAC). RAC supplemented with Hooked Steel Fibers at a rate of 0%, 0.25%, 0.5%, and 0.75% per cubic metre. Compressive strength considered a benefit parameter, whereas the state schedule of rates (SSR), 2020-21, was used to estimate cost. The experimental results discovered that RAC with 0.25% steel fibres(SF) per cubic metre found 7.27% less compressive strength results than NAC in Mix-1 of M25 grade, whereas it is 11.64% less compared to NAC of Mix-2 of M40 grade at 28 days, respectively. This related decrease in compressive strength compared to NAC is within the acceptable limit of Indian Standards. At the same time, cost analysis of RAC with 0.25% steel fibres per cubic metre observed 1.26% and 2.16% more than NAC of M25 & M40. It revealed that 0.25% SF per metre cube in RAC provides an economically viable solution in terms of cost and benefits compared to NAC of a similar mixture.
Źródło:: Advances in Science and Technology. Research Journal; 2021, 15, 3; 233-242
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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