Open Access
ARTICLE
Durability of Green Concrete in Severe Environment
Yonggan Yang1,2,3,4, Zihao Kang1, Binggen Zhan1,3,*, Peng Gao1,3,*, Qijun Yu1, Yanlai Xiong4, Jingfeng Wang1,3, Yunsheng Zhang5
1
School of Civil Engineering, Hefei University of Technology, Hefei, 230009, China
2
Henan Key Laboratory of Materials on Deep-Earth Engineering, Henan Polytechnic University, Jiaozuo, 454000, China
3
Anhui Key Laboratory of Civil Engineering Structure and Materials, Hefei University of Technology, Hefei, 230009, China
4
Hefei Cement Research and Design Institute Co., Ltd., Hefei, 230051, China
5
College of Civil Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
* Corresponding Authors: Binggen Zhan. Email: ; Peng Gao. Email:
(This article belongs to the Special Issue: Sustainable Concrete with Recyclable Materials)
Journal of Renewable Materials 2023, 11(4), 1895-1910. https://doi.org/10.32604/jrm.2023.025059
Received 19 June 2022; Accepted 22 August 2022; Issue published 01 December 2022
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.
Graphical Abstract
Keywords
Cite This Article
Yang, Y., Kang, Z., Zhan, B., Gao, P., Yu, Q. et al. (2023). Durability of Green Concrete in Severe Environment.
Journal of Renewable Materials, 11(4), 1895–1910. https://doi.org/10.32604/jrm.2023.025059