Search Results - "Nie, Qingke"

Adsorption mechanism of shell powders on heavy metal ions Pb2+/Cd2+ and the purification efficiency for contaminated soils by Bai, Bing, Bai, Fan, Sun, Chenmiao, Nie, Qingke, Sun, Shuo

“…The adsorption capacity of oyster shell powders (SPs) and the adsorption mechanism of heavy metal ions (HMs; i.e., cadmium ions Cd 2+ and lead ions Pb 2+ ) on…”
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Mechanical Properties and Microscopic Mechanism of a Multi-Cementitious System Comprising Cement, Fly Ash, and Steel Slag Powder by Zhang, Yuzhi, Zhang, Shujing, Nie, Qingke, Shen, Liang, Wang, Wei

“…The objective of this study was to reduce the stockpile of steel slag, which is a solid waste generated in the steelmaking process, and promote the resource…”
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Exploring morphological effects and multi–scale analysis on the mechanical properties and volume stability of composite mortar by Zhang, Yuzhi, Zhang, Shujing, Zhang, Yao, Nie, Qingke, Shen, Liang

“…This study conducted experimental research on the strength and micro–expansion properties of mortar with varying dosages of steel slag powder (SSP) and fly ash…”
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Chemical, Mechanical, and Durability Properties of Concrete with Local Mineral Admixtures under Sulfate Environment in Northwest China by Nie, Qingke, Zhou, Changjun, Shu, Xiang, He, Qiang, Huang, Baoshan

“…Over the vast Northwest China, arid desert contains high concentrations of sulfate, chloride, and other chemicals in the ground water, which poses serious…”
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Physicochemical and Microstructural Properties of Red Muds under Acidic and Alkaline Conditions by Nie, Qingke, Li, Youdong, Wang, Guohui, Bai, Bing

“…The main purpose of this study was to characterize the mineral and chemical composition of typical red muds in China. Changes in the physicochemical and…”
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An approach for calculating the vertical ultimate bearing capacity of a shallow circular foundation by Nie, Qingke, Yuan, Wei, Cao, Xiuling, Li, Jianming, Wang, Wei

“…In this work, a new method for the vertical bearing capacity of a shallow circular foundation was proposed with the amended formula by combining the limit…”
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Durability investigation of fractured coal-gasified ash slag concrete eroded by sulfate and chlorine salts by Li, Huawei, Nie, Qingke, Wang, Can, Wang, Guohui, Zhang, Liang, Yuan, Lili

“…The combined action of sulfate and chlorine salts erodes concrete structures in coastal and saline-alkali zones. The induced fractures under load also…”
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Bond-Slip Constitutive Relationship between Steel Rebar and Concrete Synthesized from Solid Waste Coal Gasification Slag by Li, Huawei, Chen, Haozhe, Nie, Qingke, Yu, Junchao, Zhang, Liang, Wang, Qingjun

“…Bond performance served as a crucial foundation for the collaboration between concrete and steel rebar. This study investigated the bond performance between…”
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The Promotion/Inhibition of the Seepage Transport of Copper Ions by Suspension-Colloidal Particles with Wide Size Gradation by Nie, Qingke, Li, Huawei, Yang, Haipeng, Ni, Tengfei, Jiang, Sichen

“…Sand column tests were conducted to investigate the seepage transport of silicon powders (SPs) with two wide particle size ranges (30-2000 nm and 2-70 μm),…”
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Experimental Research on the Bearing Properties of Red Mud Geopolymer Foundations by Zhang, Haiqing, Qin, Lusheng, Nie, Qingke, Wang, Yinghui, Jia, Xiangxin

“…In this study, the mechanical properties of composite foundations in red mud ground were examined, and the reinforcement effect of composite foundation dams…”
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Experimental Study on the Coupled Heat-Moisture-Heavy Metal Pollutant Transfer Process in Soils by Nie, Qingke, Wang, Wei, Guo, Wenkai, Li, Huawei

“…The coupled physical mechanism of heat conduction, moisture migration, and heavy metal transfer in a kaolin soil was studied by one-dimensional column tests…”
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Disturbance Process of Sandy Gravel Stratum Caused by Shield Tunneling and Ground Settlement Analysis by Qingke, Nie, Guang, Sun, Siyuan, Gao, Hongtao, Liu, Lichao, Zhou, Jianpeng, Hou

“…This paper analyzed the earth pressure, pore pressure, and surface settlement of the Luoyang urban rail transit tunnel in a sandy gravel stratum (Henan…”
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Laboratory experimental study on red mud geopolymer used as road subgrade materials by Qin, Lusheng, Nie, Qingke, Zhang, Haiqing, Jia, Xiangxin, Zhang, Chuanchuan

“…Red mud is a strong alkaline waste discharged from the process of alumina extraction, which is harmful to the environment and its utilization rate is always…”
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Calculation Method for the Critical Thickness of a Karst Cave Roof at the Bottom of a Socketed Pile by Qingke, Nie, Xilai, Li, Wei, Yuan, Anli, Wang, Wei, Wang, Xiangxin, Jia, Weidong, Shang

“…The thickness of a karst cave roof at the bottom of a socketed pile plays an important role in the vertical bearing capacity of the socketed pile in the karst…”
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Cotransport of heavy metals and SiO2 particles at different temperatures by seepage by Bai, Bing, Nie, Qingke, Zhang, Yike, Wang, Xiaolong, Hu, Wei

“…•Cotransport of HMs and SPs is investigated at different temperatures by seepage.•A model considering the particle size and dielectric property is…”
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A high-strength red mud–fly ash geopolymer and the implications of curing temperature by Bai, Bing, Bai, Fan, Nie, Qingke, Jia, Xiangxin

“…In response to the requirement for the comprehensive utilization of industrial waste, high-strength geopolymers were prepared from red mud (RM) and Class 1, 2,…”
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Temperature-driven migration of heavy metal Pb2+ along with moisture movement in unsaturated soils by Bai, Bing, Xu, Tao, Nie, Qingke, Li, Pengpeng

“…•New scanning curve equations for SWCC are constructed according to the shape similarity with the boundary curves.•Test results verify the hysteresis of…”
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Mechanical and microstructural characterization of geopolymers derived from red mud and fly ashes by Hu, Wei, Nie, Qingke, Huang, Baoshan, Shu, Xiang, He, Qiang

“…As a toxic industrial waste product, red mud causes severe environmental concern due to its strong alkalinity. In this study, red mud was systematically…”
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Synergistic utilization of red mud for flue-gas desulfurization and fly ash-based geopolymer preparation by Nie, Qingke, Hu, Wei, Huang, Baoshan, Shu, Xiang, He, Qiang

“…•A synergistic utilization of bauxite tailings for flue-gas desulfurization and geopolymer preparation was investigated.•The bauxite tailings had significant…”
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Corrosion effect of acid/alkali on cementitious red mud-fly ash materials containing heavy metal residues by Bai, Bing, Chen, Jing, Bai, Fan, Nie, Qingke, Jia, Xiangxin

“…High-strength cementitious red mud-fly ash materials (RFMs) were formed from sodium hydroxide and water glass mixed solutions, and their abilities to solidify…”
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