پیوندهای مفید
آمار
| تعداد نشریات | 22 |
| تعداد شمارهها | 706 |
| تعداد مقالات | 10,174 |
| تعداد مشاهده مقاله | 71,557,878 |
| تعداد دریافت فایل اصل مقاله | 63,265,773 |
Flexural Behavior of UHPC Beams Reinforced with Macro-Steel Fibers and Different Ratios of Steel and GFRP Bars | ||
| Journal of Rehabilitation in Civil Engineering | ||
| مقاله 4، دوره 12، شماره 2 - شماره پیاپی 34، مرداد 2024، صفحه 41-57 اصل مقاله (1.45 M) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22075/jrce.2023.28070.1695 | ||
| نویسندگان | ||
| Yousef Abbasi Parvin1؛ Taleb Moradi Shaghaghi1؛ Masoud Pourbaba* 2؛ Seyed Saeed Mirrezaei1؛ Yousef Zandi1 | ||
| 1Department of Civil Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran | ||
| 2Department of Civil Engineering, Maragheh Branch, Islamic Azad University, Maragheh, Iran | ||
| تاریخ دریافت: 20 مرداد 1401، تاریخ بازنگری: 11 دی 1401، تاریخ پذیرش: 14 تیر 1402 | ||
| چکیده | ||
| The flexural and shear behavior of ultra-high-performance fiber-reinforced concrete (UHPFRC) reinforced with different ratios of glass-fiber-reinforced polymer (GFRP) and conventional steel rebars is experimentally studied in this paper. For this purpose, three beams with dimensions of 250 300 1650 mm were reinforced with GFRP rebars in three different ratios (0.64%, 1.05%, and 1.45%) and hooked-end (H) steel fibers by 2% volumetric ratio. Similar procedure was carried for beams reinforced with conventional rebars. Additionally, Nonlinear regression analyses were also carried out to simulate the flexural load-deflection behavior of the beams. Results showed that the role of hooked-end fibers in compensating for the brittle nature of GFRP rebars was insignificant. Besides, increase of the longitudinal reinforcement ratio changed the failure mode from flexural to shear failure in specimens with GFRP rebars. Finally, nonlinear regression models were proposed that successfully capture the load-deflection behavior of the test specimens with coefficient of correlation ( ) very close to unity. | ||
تازه های تحقیق | ||
| ||
| کلیدواژهها | ||
| Flexural and shear behavior؛ GFRP؛ Steel fiber؛ UHPFRC | ||
| مراجع | ||
|
[1] Luhar S, Cheng TW, Nicolaides D, Luhar I, Panias D, Sakkas K. Valorisation of glass wastes for the development of geopolymer composites – Durability, thermal and microstructural properties: A review. Constr Build Mater 2019. https://doi.org/10.1016/j.conbuildmat.2019.06.169.
[2] Visintin P, Sturm AB, Mohamed Ali MS, Oehlers DJ. Blending macro- and micro-fibres to enhance the serviceability behaviour of UHPFRC. Aust J Civ Eng 2018. https://doi.org/10.1080/14488353.2018.1463608.
[3] Pourbaba M, Joghataie A, Mirmiran A. Shear behavior of ultra-high performance concrete. Constr Build Mater 2018. https://doi.org/10.1016/j.conbuildmat.2018.06.117.
[4] Ahmed Shaikh F, Arel H. Effects of curing types, fly ash fineness and fibre lengths on mechanical and impact properties of steel fibre reinforced concretes. Aust J Civ Eng 2020. https://doi.org/10.1080/14488353.2020.1771663.
[5] Venkateshwaran A, Tan KH, Li Y. Residual flexural strengths of steel fiber reinforced concrete with multiple hooked-end fibers. Struct Concr 2018. https://doi.org/10.1002/suco.201700030.
[6] Feng J, Sun WW, Wang XM, Shi XY. Mechanical analyses of hooked fiber pullout performance in ultra-high-performance concrete. Constr Build Mater 2014. https://doi.org/10.1016/j.conbuildmat.2014.07.049.
[7] Ibrahim MA, Farhat M, Issa MA, Hasse JA. Effect of material constituents on mechanical & fracture mechanics properties of ultra-high-performance concrete. ACI Struct J 2017. https://doi.org/10.14359/51689717.
[8] Hao, Q. D., Wang, B., & Ou JP. Fibre reinforced polymer rebar’s application to civil Engineering. Concrete 2006;9:38–40.
[9] Yoo DY, Banthia N, Yoon YS. Flexural behavior of ultra-high-performance fiber-reinforced concrete beams reinforced with GFRP and steel rebars. Eng Struct 2016. https://doi.org/10.1016/j.engstruct.2015.12.003.
[10] Ahangarnazhad BH, Pourbaba M, Afkar A. Bond behavior between steel and Glass Fiber Reinforced Polymer (GFRP) bars and ultra high performance concrete reinforced by Multi-Walled Carbon Nanotube (MWCNT). Steel Compos Struct 2020. https://doi.org/10.12989/scs.2020.35.4.463.
[11] de Sá FRG, Silva F de A, Cardoso DCT. Tensile and flexural performance of concrete members reinforced with polypropylene fibers and GFRP bars. Compos Struct 2020. https://doi.org/10.1016/j.compstruct.2020.112784.
[12] Dev A, Chellapandian M, Prakash SS, Kawasaki Y. Failure-mode analysis of macro-synthetic and hybrid fibre-reinforced concrete beams with GFRP bars using acoustic emission technique. Constr Build Mater 2020. https://doi.org/10.1016/j.conbuildmat.2020.118737.
[13] Patil GM, Chellapandian M, Suriya Prakash S. Effectiveness of hybrid fibers on flexural behavior of concrete beams reinforced with glass fiber-reinforced polymer bars. ACI Struct J 2020. https://doi.org/10.14359/51725844.
[14] Liu S, Wang X, Ali YMS, Su C, Wu Z. Flexural behavior and design of under-reinforced concrete beams with BFRP and steel bars. Eng Struct 2022;263:114386.
[15] El-Sayed TA, Algash YA. Flexural behavior of ultra-high performance geopolymer RC beams reinforced with GFRP bars. Case Stud Constr Mater 2021. https://doi.org/10.1016/j.cscm.2021.e00604.
[16] Betschoga C, Tung ND, Tue NV. Investigations on the influence of boundary and loading conditions on the shear resistance of FRP concrete beams without shear reinforcement. Compos Struct 2021. https://doi.org/10.1016/j.compstruct.2020.113335.
[17] Dadmand B, Pourbaba M, Sadaghian H, Mirmiran A. Effectiveness of steel fibers in ultra-high-performance fiber-reinforced concrete construction. Adv Concr Constr 2020. https://doi.org/10.12989/acc.2020.10.3.195.
[18] ASTM International. West Conshohocken P. ASTM C469 / C469M-14, Standard Test Method for Static Modulus of Elasticity and Poisson’s Ratio of Concrete in Compression. 2014.
[19] ASTM International, West Conshohocken P. ASTM C1609 / C1609M-19a, Standard Test Method for Flexural Performance of Fiber-Reinforced Concrete (Using Beam With Third-Point Loading). 2019.
[20] A. KG. Impact of age and size on the mechanical behavior of an ultra-high performance concrete (Doctoral dissertation). Michigan Technol Univ 2004.
[21] (KCI) KCI. Concrete Design Code and Commentary. Kimoondang Publ Co Seoul, Repub Korea 2007;327.
[22] Graybeal BA. Compressive behavior of ultra-high-performance fiber-reinforced concrete. ACI Mater J 2007. https://doi.org/10.14359/18577.
[23] Graybeal, B. A., & Stone B. Compression response of a rapid-strengthening ultra-high performance concrete formulation (No. FHWA-HRT-12-065). United States Fed Highw Adm Off Infrastruct Res Dev 2012.
[24] Lee SC, Oh JH, Cho JY. Compressive behavior of fiber-reinforced concrete with end-hooked steel fibers. Materials (Basel) 2015. https://doi.org/10.3390/ma8041442.
[25] Alsalman A, Dang CN, Prinz GS, Hale WM. Evaluation of modulus of elasticity of ultra-high performance concrete. Constr Build Mater 2017. https://doi.org/10.1016/j.conbuildmat.2017.07.158.
[26] Haber ZB, Varga ID la, Graybeal BA, Nakashoji B, El-Helou R. Properties and Behavior of UHPC-Class Materials. Report No FHWA-HRT-18-036. 2018.
[27] Suksawang N, Wtaife S, Alsabbagh A. Evaluation of elastic modulus of fiber-reinforced concrete. ACI Mater J 2018. https://doi.org/10.14359/51701920. | ||
|
آمار تعداد مشاهده مقاله: 936 تعداد دریافت فایل اصل مقاله: 303 |
||