A strength model for concrete made with marine dredged sediment

• Published in: Journal of cleaner production 2020-11, Vol.274, p.122673, Article 122673
• Main Authors: Chu, S.H., Yao, J.J.
• Format: Article
• Language: English
• Subjects: Cement content; Concrete strength; In-situ concrete production; Marine dredged sediment; Water content
• ISSN: 0959-6526; 1879-1786
• DOI: 10.1016/j.jclepro.2020.122673

In this paper, the properties of concrete made with marine dredged sediment (MDS) were investigated both qualitatively and quantitatively with an emphasis on the strength. Annually, a huge amount of marine sediment is dredged and disposed of largely as waste, causing serious environmental problems. To minimize such disposal, the use of MDS for in-situ concrete production is a promising solution. However, the properties of marine sediment concrete (MSC) so produced are still not easy to predict up to now. To make full use of MDS and better understand MSC for more viable mix design, this study reviewed the properties of MDS and MSC and discussed a broad range of influencing factors from which key factors were identified using the data of 112 mixes in the literature. Moreover, the key factors were quantitatively correlated to strength and such correlation yielded a prediction equation with fairly high accuracy. This study on the use of MDS with the least pre-treatment shall advance the design of in-situ MSC to meet specific engineering requirements and enhance sustainability. •112 concrete mixtures made with marine dredged sediment were investigated.•Key factors that affect the strength of marine sediment concrete were discussed.•A strength prediction equation with R2 value of 0.926 was derived by regression.•Minimal/zero pre-treatment to enable in-situ concrete production was emphasized.