@Article{jrm.2023.025059,
AUTHOR = {Yonggan Yang, Zihao Kang, Binggen Zhan, Peng Gao, Qijun Yu, Yanlai Xiong, Jingfeng Wang, Yunsheng Zhang},
TITLE = {Durability of Green Concrete in Severe Environment},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {11},
YEAR = {2023},
NUMBER = {4},
PAGES = {1895--1910},
URL = {http://www.techscience.com/jrm/v11n4/50688},
ISSN = {2164-6341},
ABSTRACT = {In this paper, the effects of different mineral admixtures and sulfate solution types on the appearance, mass
change rate, relative dynamic elastic modulus, and corrosion resistance coefficient of concrete were systematically
studied. X-ray Diffraction (XRD), Mercury Intrusion Porosimetry (MIP), Scanning Electron Microscopy (SEM),
and X-ray Computed Tomography (X-CT) were used to explore and analyze the changes in the microstructure
and the corrosion products of concrete in the sulfate solution. The results show that the existence of magnesium
ions accelerates concrete deterioration. There is a critical dosage of fly ash for magnesium sulfate resistance of
concrete. The magnesium sulfate resistance of concrete is improved when the fly ash content is less than 20%.
Slag can significantly improve the corrosion resistance of concrete to magnesium sulfate. The diffusion of sulfate
ions into concrete is a gradual process. In the early stages of corrosion, sulfate ion content in the concrete
immersed in the magnesium sulfate solution is slightly less than that of the concrete immersed in the sodium
sulfate solution. However, in the later stage of corrosion, the sulfate ion content in the concrete immersed in
the magnesium sulfate solution is significantly higher than that of the concrete immersed in the sodium sulfate
solution.},
DOI = {10.32604/jrm.2023.025059}
}