TY - JOUR
T1 - Modelling damage evolution of carbon fiber-reinforced epoxy polymer composites in seawater sea sand concrete environment
AU - Zhao, Qi
AU - Zhang, Daxu
AU - Zhao, Xiao Lin
AU - Sharma, Suraksha
N1 - Funding Information:
This research was sponsored by the National Natural Science Foundation of China ( 12072192 , U1831105 ), and the Natural Science Foundation of Shanghai ( 20ZR1429500 ). We are very grateful to the material support from Jiangsu Green materials Co. Ltd and the sample preparations using Mecatech 334 and Poly Vac in IAC center of Shanghai Jiao Tong University. The authors also want to thank Ling-Yu Zheng, Wei-Yu Guo, Yu-Qi Feng, Yong-Long Du, Li-Ping Duan, Hai-Ting Li, Ping Lai, Yue Pan and Jing-Jie Meng for their help and professional advice.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/10/20
Y1 - 2021/10/20
N2 - The paper aims to study the damage mechanism and damage evolution of carbon fiber-reinforced epoxy polymer (CFRP) composites under seawater sea sand concrete (SWSSC) environment in coastal, marine and ocean engineering. CFRP composites were exposed into the simulated SWSSC solution to carry out the accelerated corrosion experiment at 25 °C, 40 °C and 55 °C, respectively. The degradation mechanism was revealed using scanning electrical microscope, X-ray microscope and Fourier transform infrared spectroscopy. The damage of CFRP composites is mainly induced by the hydrolysis of cured epoxy resin, and this process is accelerated in alkaline environment because the hydroxyl ions can react with the carboxylic acid resulting from hydrolyzation. Two approaches, chemical etching rate-based method and hydroxyl ions diffusion-based method, have been proposed. Their corresponding finite element models have been developed to predict the degradation of CFRP bars. The fidelity of the two approaches has been validated by comparing the predicted results with the test data.
AB - The paper aims to study the damage mechanism and damage evolution of carbon fiber-reinforced epoxy polymer (CFRP) composites under seawater sea sand concrete (SWSSC) environment in coastal, marine and ocean engineering. CFRP composites were exposed into the simulated SWSSC solution to carry out the accelerated corrosion experiment at 25 °C, 40 °C and 55 °C, respectively. The degradation mechanism was revealed using scanning electrical microscope, X-ray microscope and Fourier transform infrared spectroscopy. The damage of CFRP composites is mainly induced by the hydrolysis of cured epoxy resin, and this process is accelerated in alkaline environment because the hydroxyl ions can react with the carboxylic acid resulting from hydrolyzation. Two approaches, chemical etching rate-based method and hydroxyl ions diffusion-based method, have been proposed. Their corresponding finite element models have been developed to predict the degradation of CFRP bars. The fidelity of the two approaches has been validated by comparing the predicted results with the test data.
KW - CFRP composites
KW - Damage evolution modelling
KW - Damage mechanism
KW - Seawater sea sand concrete (SWSSC)
UR - http://www.scopus.com/inward/record.url?scp=85114131393&partnerID=8YFLogxK
U2 - 10.1016/j.compscitech.2021.108961
DO - 10.1016/j.compscitech.2021.108961
M3 - Journal article
AN - SCOPUS:85114131393
SN - 0266-3538
VL - 215
JO - Composites Science and Technology
JF - Composites Science and Technology
M1 - 108961
ER -