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Erschienen in:
2021 | OriginalPaper | Buchkapitel
Red Mud as a Controlled Low Strength Material
verfasst von : Bijaya Kumar Das, S. K. Das, Benu Gopal Mohapatra
Erschienen in: Recent Developments in Sustainable Infrastructure
Verlag: Springer Singapore
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Abstract
In this paper characterization of red mud as a controlled low strength material (CLSM) is discussed with red mud as a base material and crusher dust or quarry dust, phosphogypsum and fly ash as other mineral admixtures. The highly alkaline red mud is mixed with phosphogypsum (PG) and crusher dust (CD) in different proportions, and fly ash is used to improve the flowability. The material properties of developed CLSM are characterized in both green and hardened state. The bleeding percentage was found to be less than 1% and flow diameter decreased with increase in crusher dust. Higher flow value was observed with phosphogypsum in comparison to with same percentage of crusher dust due to particle size and chemical composition. Higher unconfined compressive strength, California bearing ratio and flowability were observed for CLSM developed with red mud and CD mix in comparison to red mud and PG mixture.