Flexural behaviour and ultimate bending capacity of high-volume fly ash reinforced concrete beams
Само за регистроване кориснике
2023
Чланак у часопису (Рецензирана верзија)
Метаподаци
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Large number of studies analyzed physical and mechanical properties of high-volume fly ash concrete, but only a few discussed its structural behavior. Material properties are an important input parameter for structural analysis, but they are insufficient for reliable conclusions to be made. This study analyses flexural behavior of reinforced concrete beams made with 63% of low-calcium class F fly ash in total cementitious materials mass, using experimental method and analyzing current code predictions (EN 1992-1-1). The analysis was done by comparing beams made with two longitudinal reinforcement ratios, made with traditional cement concrete (OPC) and high-volume fly ash concrete (HVFAC), both corresponding to concrete class C30/37. Beams were tested in a four-point bending test measuring vertical displacement, crack development, concrete strains and longitudinal reinforcement strains. According to this research, the flexural performance of HVFAC beams is similar to flexural performanc...e of corresponding OPC beams in terms of ultimate bending capacity. The significant difference was noticed regarding cracking extent that was higher in HVFAC beams. Available ultimate bending moments code predictions can be applied on HVFAC beams with similar precision and variation of results, like for OPC beams. However, this cannot be concluded for parameters depending on the cracking behaviour, like cracking moments or deflections. Results and analysis presented in this study indicate that HVFAC can be used in structural elements subjected dominantly to bending, like beams and slabs. More research regarding structural behavior of HVFAC using full-scale long-term tests is needed to develop larger database for reliability analysis.
Кључне речи:
High-volume fly ash concrete / Beams / Ultimate bending capacity / Cracks / Deflection / StrainsИзвор:
Engineering Structures, 2023, 277Финансирање / пројекти:
- Истраживање могућности примене отпадних и рециклираних материјала у бетонским композитима, са оценом утицаја на животну средину, у циљу промоције одрживог грађевинарства у србији (RS-MESTD-Technological Development (TD or TR)-36017)
Институција/група
GraFarTY - JOUR AU - Dragaš, Jelena AU - Marinković, Snežana AU - Ignjatović, Ivan AU - Tošić, Nikola AU - Koković, Veljko PY - 2023 UR - https://grafar.grf.bg.ac.rs/handle/123456789/2927 AB - Large number of studies analyzed physical and mechanical properties of high-volume fly ash concrete, but only a few discussed its structural behavior. Material properties are an important input parameter for structural analysis, but they are insufficient for reliable conclusions to be made. This study analyses flexural behavior of reinforced concrete beams made with 63% of low-calcium class F fly ash in total cementitious materials mass, using experimental method and analyzing current code predictions (EN 1992-1-1). The analysis was done by comparing beams made with two longitudinal reinforcement ratios, made with traditional cement concrete (OPC) and high-volume fly ash concrete (HVFAC), both corresponding to concrete class C30/37. Beams were tested in a four-point bending test measuring vertical displacement, crack development, concrete strains and longitudinal reinforcement strains. According to this research, the flexural performance of HVFAC beams is similar to flexural performance of corresponding OPC beams in terms of ultimate bending capacity. The significant difference was noticed regarding cracking extent that was higher in HVFAC beams. Available ultimate bending moments code predictions can be applied on HVFAC beams with similar precision and variation of results, like for OPC beams. However, this cannot be concluded for parameters depending on the cracking behaviour, like cracking moments or deflections. Results and analysis presented in this study indicate that HVFAC can be used in structural elements subjected dominantly to bending, like beams and slabs. More research regarding structural behavior of HVFAC using full-scale long-term tests is needed to develop larger database for reliability analysis. T2 - Engineering Structures T1 - Flexural behaviour and ultimate bending capacity of high-volume fly ash reinforced concrete beams VL - 277 DO - 10.1016/j.engstruct.2022.115446 ER -
@article{ author = "Dragaš, Jelena and Marinković, Snežana and Ignjatović, Ivan and Tošić, Nikola and Koković, Veljko", year = "2023", abstract = "Large number of studies analyzed physical and mechanical properties of high-volume fly ash concrete, but only a few discussed its structural behavior. Material properties are an important input parameter for structural analysis, but they are insufficient for reliable conclusions to be made. This study analyses flexural behavior of reinforced concrete beams made with 63% of low-calcium class F fly ash in total cementitious materials mass, using experimental method and analyzing current code predictions (EN 1992-1-1). The analysis was done by comparing beams made with two longitudinal reinforcement ratios, made with traditional cement concrete (OPC) and high-volume fly ash concrete (HVFAC), both corresponding to concrete class C30/37. Beams were tested in a four-point bending test measuring vertical displacement, crack development, concrete strains and longitudinal reinforcement strains. According to this research, the flexural performance of HVFAC beams is similar to flexural performance of corresponding OPC beams in terms of ultimate bending capacity. The significant difference was noticed regarding cracking extent that was higher in HVFAC beams. Available ultimate bending moments code predictions can be applied on HVFAC beams with similar precision and variation of results, like for OPC beams. However, this cannot be concluded for parameters depending on the cracking behaviour, like cracking moments or deflections. Results and analysis presented in this study indicate that HVFAC can be used in structural elements subjected dominantly to bending, like beams and slabs. More research regarding structural behavior of HVFAC using full-scale long-term tests is needed to develop larger database for reliability analysis.", journal = "Engineering Structures", title = "Flexural behaviour and ultimate bending capacity of high-volume fly ash reinforced concrete beams", volume = "277", doi = "10.1016/j.engstruct.2022.115446" }
Dragaš, J., Marinković, S., Ignjatović, I., Tošić, N.,& Koković, V.. (2023). Flexural behaviour and ultimate bending capacity of high-volume fly ash reinforced concrete beams. in Engineering Structures, 277. https://doi.org/10.1016/j.engstruct.2022.115446
Dragaš J, Marinković S, Ignjatović I, Tošić N, Koković V. Flexural behaviour and ultimate bending capacity of high-volume fly ash reinforced concrete beams. in Engineering Structures. 2023;277. doi:10.1016/j.engstruct.2022.115446 .
Dragaš, Jelena, Marinković, Snežana, Ignjatović, Ivan, Tošić, Nikola, Koković, Veljko, "Flexural behaviour and ultimate bending capacity of high-volume fly ash reinforced concrete beams" in Engineering Structures, 277 (2023), https://doi.org/10.1016/j.engstruct.2022.115446 . .