The effect of freeze-thaw cycles on flexural behaviour of FRP-reinforced ECC beams

• Autorzy: Wang Yi , Wang Guan , Guan Zhongwei , Ashour Ashraf , Ge Wenjie , Zhang Pu , Lu Weigang , Cao Dafu

Identyfikatory

DOI

10.1007/s43452-021-00258-8

• Języki publikacji: EN

Abstrakty

EN

This paper presents experimental and theoretical investigations on the flexural utilised of FRP (fibre-reinforced polymer) rebar-reinforced ECC (engineered cementitious composite) beams subjected to freeze–thaw cycles. Eight FRP-reinforced specimens after subjected to 0, 50, 100 and 150 cycles of freeze–thaw were tested to failure under flexural loading. Experimental results show that the moment capacity decreases with the increase of freeze–thaw cycles regardless of the material used, but the decreasing rate of the reinforced ECC specimen is lower than that of the conventional reinforced concrete specimen. The bearing capacity, deflection and crack width of the reinforced ECC specimens under quasi-permanent combination of moments are 1.13 ~ 1.21, 0.66 ~ 0.90 and 0.71 times of those of the conventional reinforced concrete specimens, respectively. Due to the excellent tensile and durability performance of ECC materials, bearing capacity, stiffness and crack resistance of FRP-reinforced ECC beams are enhanced compared with their conventional counterparts, particularly with more freeze–thaw cycles. Based on the formulae from ACI 440 and GB 50608, taking into account of the contribution of ECC material and balanced reinforcement ratio, the simplified formulae are developed to estimate the moment capacity and stiffness of the FRP-reinforced ECC beams. The results predicted on the moment capacity and deflection are in good agreement with the corresponding experimental measurements.

Słowa kluczowe

EN

freeze-thaw cycles; FRP bar; ECC beam; flexural behaviour; bearing capacity; deflection

PL

zginanie; nośność; zamrażanie

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2021
• Tom: Vol. 21, no. 3
• Strony: 265--288
• Opis fizyczny: Bibliogr. 52 poz., fot., rys., wykr.

Twórcy

autor

Wang Yi

• College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China
• College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China

autor

Wang Guan

• College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China

autor

Guan Zhongwei

• School of Engineering, University of Liverpool, Liverpool L693GQ, UK
• School of Mechanical Engineering, Chengdu University, Chengdu 610100, China

autor

Ashour Ashraf

• Faculty of Engineering and Informatics, University of Bradford, Bradford BD71DP, UK

autor

Ge Wenjie

• College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China
• College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China

• https://orcid.org/0000-0002-3062-3749

autor

Zhang Pu

• School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China

autor

Lu Weigang

• College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China

autor

Cao Dafu

• College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)