Co-utilization of stone coal leaching slag and bauxite residue for the preparation of lightweight ceramsite

Zeng, Hua; Li, Xuelian; Sun, Wei; Wang, Li; Tang, Honghu

doi:10.1016/j.conbuildmat.2024.136541

Construction and Building Materials

2024

DOI: 10.1016/j.conbuildmat.2024.136541

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Co-utilization of stone coal leaching slag and bauxite residue for the preparation of lightweight ceramsite

Hua Zeng,

Xuelian Li,

Wei Sun

et al.

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Cited by 3 publications

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Oil-based drilling cutting pyrolysis residues-recycled fine powder sintered ceramsite: Basic properties, microsintering mechanism, lightweight concrete application and heavy metals solidification

Wang,

Cheng,

et al. 2024

Construction and Building Materials

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Oil-based drilling cutting pyrolysis residues-recycled fine powder sintered ceramsite: Basic properties, microsintering mechanism, lightweight concrete application and heavy metals solidification

Wang,

Cheng,

et al. 2024

Construction and Building Materials

View full text Add to dashboard Cite

Co-utilization of coal-based solid waste and crop straw for porous aggregate: Preparation, performance, and mechanism

Feng,

Wang,

Yan

et al. 2024

Case Studies in Construction Materials

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Macro–Micro Properties of Remodeled Waste Slurry Under Freeze–Thaw Cycles

Wang,

Xiong,

Huang

et al. 2025

Materials

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Waste slurry, a major by-product of urban construction, is produced in rapidly increasing volumes each year. Dehydrated waste slurry has potential as a roadbed material; however, its performance in freeze–thaw environments, which can induce frost heave and thaw settlement, and the mechanism of the influence of freeze–thaw cycles on its macro and micro properties are still unclear and need thorough investigation. This study explores the macroscopic and microscopic properties of waste slurry subjected to freeze–thaw cycles. We conducted unconfined compressive strength (UCS) and triaxial unconsolidated undrained (UU) shear tests, focusing on fissure compaction, elastic deformation, plastic yielding, and strain hardening stages. The results reveal a decrease in strength and elastic modulus with increasing freeze–thaw cycles, as well as in the damage degree generated by freeze–thaw cycles. To uncover the underlying microscopic mechanisms, we performed Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), and mercury intrusion porosimetry (MIP) analyses. These tests highlighted the evolution of pores and microcracks during freeze–thaw cycles. These results have important reference values for the reutilization of waste slurry discharged from large-diameter bored piles for roadbed backfill materials that need to be repaired quickly in seasonally frozen areas.

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Co-utilization of stone coal leaching slag and bauxite residue for the preparation of lightweight ceramsite

Cited by 3 publications

References 47 publications

Oil-based drilling cutting pyrolysis residues-recycled fine powder sintered ceramsite: Basic properties, microsintering mechanism, lightweight concrete application and heavy metals solidification

Oil-based drilling cutting pyrolysis residues-recycled fine powder sintered ceramsite: Basic properties, microsintering mechanism, lightweight concrete application and heavy metals solidification

Co-utilization of coal-based solid waste and crop straw for porous aggregate: Preparation, performance, and mechanism

Macro–Micro Properties of Remodeled Waste Slurry Under Freeze–Thaw Cycles

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