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Affiliation of Author(s):航空学院

Title of Paper:Flexural behavior of C60 coral aggregate reinforced concrete beam

Journal:Dongnan Daxue Xuebao

Abstract:The flexural behavior of coral aggregate reinforced concrete beam (CARCB) with different types of reinforcement was tested, and the crack development, the failure mode, the midspan deflection and the flexural capacity were studied. The relationships of bending moment-midspan deflection, load-longitudinal tensile reinforcement strain and load-maximum crack width were established, and a calculation model for the flexural capacity of CARCB was suggested. The results show that with the increase of the reinforcement strength, the crack bending moment and the ultimate bending moment are increased, and the extension of the crack width (w) gradually slows down, inhibiting the development of cracks. With the increase of the load, w will increase. At the beginning of the loading, the w increases slowly, and then increases rapidly when the load reaches the ultimate load, leading to beam failure. The application of new organic coated steel in the CAC structure is suggested to effectively inhibit reinforcement corrosion. A more reasonable calculation model for the flexural capacity of CARCB is proposed by considering the loss the steel section and the decrease of the steel yield strength due to the steel corrosion. © 2019, Editorial Department of Journal of Southeast University. All right reserved.

ISSN No.:1001-0505

Translation or Not:no

Date of Publication:2019-07-20

Co-author:yhf,mhy,Mi, Renjie,Wu, Zhangyu

Correspondence Author:达波