Journal
CEMENT AND CONCRETE RESEARCH
Volume 152, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cemconres.2021.106666
Keywords
Seawater; Concrete technology; Supplementary cementitious materials; Hydration; Durability
Funding
- NPRP from Qatar National Research Fund (a member of Qatar Foundation) [NPRP 13S-0209-200311]
- Hong Kong Research Grants Council [T22-502/18-R]
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Research on seawater-mixed concrete has garnered significant attention in the past 16 years, with a good understanding of its effects on hydration processes and concrete microstructure. However, limited information is available regarding the long-term durability of seawater-mixed concrete.
A review of the last 16 years of research (2005-2021) on seawater-mixed concrete is presented. A very significant amount of research, both fundamental and applied, has been performed on this topic, and there is worldwide interest in the use of seawater-mixed concrete to reduce concrete freshwater consumption. Seawater-mixed concrete should be used either for unreinforced concrete or for concrete using non-corrosive reinforcement (fiber reinforced polymer or stainless steel). The complex effects of seawater on hydration processes, concrete microstructure, and interactions with supplementary cementitious materials are relatively well understood. On the other hand, only limited information is available on the long-term durability of seawater-mixed concrete. Modeling of seawater-mixed concrete at a variety of scales appears to be nascent. A primary challenge with the large-scale adoption of seawater-mixed concrete remains the absence of codes and specifications that address the use of such material. As an increasing number of structures are constructed using seawater-mixed concrete and a greater understanding of long-term behavior is obtained, it is hoped that greater adoption for the right applications will eventually follow.
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