article · Springer Link (Chiba Institute of Technology)
The incorporation of industrial by-products possessing latent hydration capacity as a partial cement replacement presents an effective strategy for advancing sustainable concrete production and reduction of hazardous substances in the environment. In this study, a mortar system containing ordinary Portland cement, nano-silica (NS) and Manganese Ore Tailings (MOT) was carefully designed to produce concrete. The hydration behaviour of the mortar system was examined through setting time observations. The duration of the initial hydration reaction took longer in the MOT samples, the delay increased as the MOT content increased. This could be due to the release of SO42− ions from gypsum when MOT dissolves in water. The retardation in hydration time was significant at 25%, 30%, and 35% MOT content with delays of 2h, 3.5h, and 5.5h, respectively, compared to the control mix. Concrete mixtures with up to 10%MOT-10%NS demonstrated up to 29% improvement in mechanical properties and 37% lower shrinkage strain compared to conventional concrete. Nano-silica proved to enhance the strength and shrinkage characteristics of MOT concrete significantly due to the filler effect. Incorporating MOT in concrete offers a viable and eco-friendly solution for the safe disposal of the toxic components in MOT.
This page summarises published work. The authoritative version sits with the publisher.
DOI: 10.1051/e3sconf/202672903002/pdf
Is something wrong with this record? Report it or request removal.
Discussion
Have you built on this work, tried to replicate it, or seen it applied in practice? Share what you know. Verified researchers and MARATTO™ domain experts can open a discussion, and any member can reply. Contributions are reviewed before they appear.
No discussion yet. Open the first thread.
New to MARATTO™? Create a free account.
