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

Wang, Chao-qiang; Cheng, Lin-xiao; Wu, Kai; Chen, Zhong

doi:10.1016/j.conbuildmat.2024.138136

Construction and Building Materials

2024

DOI: 10.1016/j.conbuildmat.2024.138136

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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

Chao-qiang Wang,

Lin-xiao Cheng,

Kai Wu

et al.

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Cited by 2 publications

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A robust approach for bond strength prediction of mortar using machine learning with SHAP interpretability

Wu,

Zhou,

et al. 2024

Materials Today Communications

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A robust approach for bond strength prediction of mortar using machine learning with SHAP interpretability

Wu,

Zhou,

et al. 2024

Materials Today Communications

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Immobilization of arsenic wastes and retardation effect on cement hydration: Experimental and molecular dynamic analysis

Chen,

Yuan,

Zhu

et al. 2024

J Am Ceram Soc.

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This work was designed to investigate the influence of arsenic dosage, variety on the mechanical properties, hydration, and solidification from the perspective of Portland cement (PC) performance evolution. The results demonstrate that using PC could solidify the arsenic wastes effectively, with arsenic leaching concentrations consistently below 5 mg/L. Arsenic wastes retard cement hydration, leading to a slower rate of hydrates formation, disrupting the calcium silicate hydrate (C–S–H) stacking structure, and thus detrimental to strength development especially at early age. The adverse effect is highly dependent on the arsenic variety. The insoluble calcium arsenate exhibits the least impact, while the arsenates show the largest challenging to immobilization due to the instability of hydrates. Molecular dynamic simulation indicates that arsenic can be chemically immobilized with Ca2+, and be physically adsorbed onto the positively charged C–S–H by forming As‐O···Ca···Si‐O units, accompanied by a significant reduction in adsorption energy by 46.5%. The arsenic solidification behavior provides a basis for the resource utilization of arsenic wastes in cementitious 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

Cited by 2 publications

References 50 publications

A robust approach for bond strength prediction of mortar using machine learning with SHAP interpretability

A robust approach for bond strength prediction of mortar using machine learning with SHAP interpretability

Immobilization of arsenic wastes and retardation effect on cement hydration: Experimental and molecular dynamic analysis

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