Investigation of the performance and life cycle assessment of alkali-activated sintered sludge-slag-based permeable concrete DOI Creative Commons
Xiaohui Ning,

Jiayang Zhang,

Chao Zhuang

и другие.

Frontiers in Materials, Год журнала: 2024, Номер 11

Опубликована: Ноя. 19, 2024

As urbanization continues to accelerate, the application of permeable concrete is becoming an increasingly prevalent practice. Nevertheless, carbon dioxide emission issue associated with traditional cannot be overlooked. In this study, alkali-activated sintered sludge and slag were employed as raw materials prepare sludge-slag-based concrete. The effects calcination temperature, content, binder-to-aggregate ratio on compressive strength, porosity, permeability coefficient investigated through implementation one-way experiments. formation mechanism was analyzed using scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), a assessment performed. findings indicated that increase in content resulted notable decline 28-day accompanied by reduction Ca/Si C-A-S-H hydration products, from 1.08 0.35. Conversely, demonstrated abiotic losses declined markedly effectively mitigating burden construction materials.

Язык: Английский

Solid waste binder cemented dihydrate phosphogypsum aggregate to prepare backfill material DOI
Yonghui Zhao,

Xuhong Zhou,

Qishi Zhou

и другие.

Minerals Engineering, Год журнала: 2025, Номер 226, С. 109249 - 109249

Опубликована: Март 15, 2025

Язык: Английский

Процитировано

3

Trends and Applications of Green Binder Materials for Cemented Paste Backfill Mining in China DOI Open Access
Jiandong Wang, Bolin Xiao, Xiaohui Liu

и другие.

Minerals, Год журнала: 2025, Номер 15(2), С. 97 - 97

Опубликована: Янв. 21, 2025

The backfill binder material is the key to cost and performance of cemented paste backfill. This study aims understand current situation metal ore binders, identify industry challenges, inspire research ideas, explore development directions. Current investigates trends developments binders through literature review, experience summary, field research, statistical analysis, other methods. Firstly, main types are summarized, including cement, metallurgical slag, thermal chemical tailings binders. Secondly, progress regarding reactivity activation, hydration mechanism, harmful ion solidification, energy conservation, carbon reduction summarized. Thirdly, three industrial applications new introduced Cement still most common, followed by slag powder binder. cases steel semi-hydrated phosphogypsum have shown significant effects. Solid waste-based materials gradually replacing which a trend. Finally, further discussed, modeling simulation, properties under extreme environments, hardening process control, technical standards for work provides reference basis promoting green efficient sustainable development.

Язык: Английский

Процитировано

1

Synergy effects of phosphogypsum on the hydration mechanism and mechanical properties of alkali-activated slag in polysilicon sludge solidification DOI
Dongyang Tian, Hua Jiang, Zedong Qiu

и другие.

Construction and Building Materials, Год журнала: 2024, Номер 456, С. 139386 - 139386

Опубликована: Ноя. 28, 2024

Язык: Английский

Процитировано

6

Research on the performance of low carbon mine filling cementing material based on red mud: a comprehensive review DOI Creative Commons
Wenhuan Liu, Zeyu Zhou, Hui Li

и другие.

Case Studies in Construction Materials, Год журнала: 2025, Номер unknown, С. e04375 - e04375

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0

Adding silica fume and calcium carbide residue to enhance the performance of β-hemihydrate phosphogypsum for backfill mining DOI
Yonghui Zhao, Haiyang Zhu,

Xuhong Zhou

и другие.

Construction and Building Materials, Год журнала: 2025, Номер 467, С. 140420 - 140420

Опубликована: Фев. 13, 2025

Язык: Английский

Процитировано

0

Improving the performance of phosphogypsum-based cementitious materials by controlling water consumption and introducing CaCl2 DOI
Yonghui Zhao,

Xuhong Zhou,

Qishi Zhou

и другие.

Sustainable Chemistry and Pharmacy, Год журнала: 2025, Номер 44, С. 101971 - 101971

Опубликована: Март 7, 2025

Язык: Английский

Процитировано

0

Synthesis and Property Characterization of Low-Activity Waste-Derived Quaternary Cementitious Materials DOI Creative Commons

Linlin Jiang,

Xianhui Zhao, Haoyu Wang

и другие.

Buildings, Год журнала: 2025, Номер 15(9), С. 1426 - 1426

Опубликована: Апрель 23, 2025

The environmental risks associated with industrial solid wastes—fly ash (FA), red mud (RM), carbide slag (CS), and steel (SS)—are amplified by their massive global accumulation. This study developed a quaternary cementitious system using low-activity wastes—FA, RM, CS, SS—as alternatives to high-reactivity ground granulated blast furnace slag. hydration behavior, mechanical properties, microstructure were investigated, along the effects of Ca(ClO)2 Ca3(PO4)2 as calcium additives. Fresh properties (fluidity, pH, electrical conductivity), compressive strength, drying shrinkage evaluated, while SEM-EDS, XRD, FTIR, TG-DSC analyzed microstructural evolution. results show that FA-RM alone failed solidify, but CS enhanced hydration, reducing fluidity increasing SS improved thermal stability micro-aggregate. optimized FA-RM-CS-SS achieved 16.7 MPa at 90 days. accelerated C-S-H gel formation, whereas stabilized matrix via hydroxyapatite precipitation, mitigating shrinkage. approach enables simultaneous waste utilization, Cl- P-containing pollutant immobilization, offering sustainable strategy for eco-friendly construction materials.

Язык: Английский

Процитировано

0

Research into cemented paste backfill properties and options for its application: Case study from a Kryvyi Rih Iron-ore Basin, Ukraine DOI Creative Commons
Мykhailo Petlovanyi, Kateryna Sai

Mining of Mineral Deposits, Год журнала: 2024, Номер 18(4), С. 162 - 179

Опубликована: Дек. 30, 2024

Purpose. The purpose is to conduct experimental research on a set of properties cemented paste backfill mass based number natural-technogenic materials the Kryvyi Rih Iron-ore Basin with aim its further use in technologies for restoring heavily disturbed earth's surface by complex iron ore mining. Methods. A comprehensive toolkit used: X-ray fluorescence and diffraction analyses study chemical mineralogical composition components, conductometer measurements electrical conductivity mixtures during their hardening, laboratory studies formulations determination physical-mechanical characteristics using hydraulic press, an analytical determine suitable regions backfilling, taking into account presence technogenic cavities, tailings dumps binder materials. Findings. It has been found that paste-like homogeneous state mixture beneficiation from mining processing plants Ukraine achieved at solid part content about 73-75%, which provides optimal balance between flowability mechanical strength. patterns strength changes depending material dosage, hardening period pure cement different variations alternative determined. have revealed correlation parameters. Originality. method predicting early late backfilling developed, identified mixture, time reach peak, stages hardening. knowledge understanding conditions under influence climatic environmental developed. Practical implications. conducted useful designing technology earth’s surface, namely, failure zones mines, underground unfilled cavities closed mines mined-out spaces quarries. concept implementing western city expected contribute environmental, economic social development region.

Язык: Английский

Процитировано

1

Investigation of the performance and life cycle assessment of alkali-activated sintered sludge-slag-based permeable concrete DOI Creative Commons
Xiaohui Ning,

Jiayang Zhang,

Chao Zhuang

и другие.

Frontiers in Materials, Год журнала: 2024, Номер 11

Опубликована: Ноя. 19, 2024

As urbanization continues to accelerate, the application of permeable concrete is becoming an increasingly prevalent practice. Nevertheless, carbon dioxide emission issue associated with traditional cannot be overlooked. In this study, alkali-activated sintered sludge and slag were employed as raw materials prepare sludge-slag-based concrete. The effects calcination temperature, content, binder-to-aggregate ratio on compressive strength, porosity, permeability coefficient investigated through implementation one-way experiments. formation mechanism was analyzed using scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), a assessment performed. findings indicated that increase in content resulted notable decline 28-day accompanied by reduction Ca/Si C-A-S-H hydration products, from 1.08 0.35. Conversely, demonstrated abiotic losses declined markedly effectively mitigating burden construction materials.

Язык: Английский

Процитировано

0