Journal
JOURNAL OF CLEANER PRODUCTION
Volume 275, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2020.122991
Keywords
Regenerated binding materials (RBM); Industrial wastes; Soil stabilization; Aggregate stabilization; Mechanical strength; Microstructure
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Funding
- Australian Research Council (ARC) [DE150101751]
- Zhongyuan Thousand Talents Program of Henan Province [204200510004]
- Systematic Project of Guangxi Key Laboratory of Disaster Prevention and Structural Safety (Guangxi University), China [2019ZDX004]
- Research & Development Center of Transport Industry of Technologies, Materials and Equipments of Highway Construction and Maintenance (Zhengzhou), China
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This study presents an experimental investigation on a sustainable regenerated binding material (RBM), which is derived from several industrial solid wastes. Initially, the hydration process, mechanical behaviors, and microstructural characteristics of the RBM were investigated. Subsequently, the feasibility of RBM for the stabilization of macadam, expansive soil, and weathered sand was evaluated. The results reveal that in comparison with the ordinary Portland cement (OPC), the RBM exhibits a slightly faster hydration rate at the initial stage and comparable mechanical performance. For the stabilized macadam, the one stabilized by the RBM exhibits better unconfined compressive strength, scouring resistance and freeze-thaw resistance than the counterpart stabilized by OPC. Furthermore, the RBM can significantly improve the performance index of the expansive soil and weathered sand, and this enhancement is more significant as the RBM content increasing. Additionally, the RBM has been successfully applied in practical engineering, manifesting the promising application potential of the RBM. Overall, the excellent performance of RBM as an alternative stabilizer of the subgrade soil and aggregates can promote the application of the RBM low-carbon pavement construction in the future. (C) 2020 Elsevier Ltd. All rights reserved.
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