Optimizing the Design Proportion of High-Performance Concrete via Using Response Surface Method

Luan, Congqi; Zhou, Mei; Zhou, Tongtong; Wang, Jinbang; Yuan, Liang; Zhang, Kai; Ren, Zunchao; Liu, Yongyi; Zhou, Zonghui

doi:10.1007/s40996-021-00802-9

Cited by 7 publications

(2 citation statements)

References 48 publications

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“…This is far longer than that of the samples with the lithiophilic ZnO‐based multilayer or Sn layer decorated copper mesh (about 300 and 280 h). [ 40,58 ] In contrast, CF, CN and CZ show unstable cycling performance, for which the voltages start to fluctuate after 30, 100 and 140 h, respectively. When the current density is 1 mA cm −2 , the CNZ also shows the best cycle performance in the long‐term galvanostatic charging‐discharging test (Figure S5a, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Lithiophilic 3D Copper‐Based Magnetic Current Collector for Lithium‐Free Anode to Realize Deep Lithium Deposition

Zhang

Chen

Wen

et al. 2021

Adv Funct Materials

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Lithium metal is the ideal anode material for high-energy-density lithiumbased batteries. Nevertheless, lithium metal tends to accumulate on the surface of the current collector during the plating and stripping process to form lithium dendrites, resulting in low Coulombic efficiency and safety issues. Here, a lithiophilic 3D copper-based magnetic current collector is designed by loading ferromagnetic nickel-cobalt alloy and lithiophilic zinc oxide onto the copper foam to create a lithium-free anode. Under the micromagnetic field, the novel lithium-free anode achieves a high level of deep lithium deposition (from 300 µm to about 1000 µm), successfully alleviating the large change of lithium volume. In addition, the Coulombic efficiency and cyclic stability are improved effectively. With a total capacity of 1 mA h cm −2 at a current density of 1 mA cm −2 , the Coulombic efficiency of the above remains 95% at 590th-cycle. Moreover, the symmetric cell can stably cycle for more than 560 h at 2 mA cm −2 with the capacity of 1 mA h cm −2 . This novel strategy will potentially open up new horizons for lithium-free anodes, which may be generalized to other advanced energy storage systems.

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Section: Resultsmentioning

confidence: 99%

Lithiophilic 3D Copper‐Based Magnetic Current Collector for Lithium‐Free Anode to Realize Deep Lithium Deposition

Zhang

Chen

Wen

et al. 2021

Adv Funct Materials

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“…The load and mid-span deflection curves for each specimen are shown in Figure 7. All the laminated slabs had similar deflection variation patterns, with three distinct phases [45][46][47][48][49]: elastic working phase, cracked working phase, and damaged phase. In the elastic working phase, the load and deflection values were small and the curves showed approximately straight lines.…”

Section: Load-deflection Relationshipmentioning

confidence: 98%

Experimental and Numerical Study of the Flexural Performance of Spontaneous Combustion Gangue Coarse Aggregate Concrete Laminated Slab

et al. 2023

Self Cite

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(1) Background: to study the differences in flexural performance and failure characteristics of spontaneous combustion gangue coarse aggregate concrete (SCGAC) laminated slabs and ordinary concrete laminated slabs, comparative flexural performance tests of one ordinary concrete laminated slab and four spontaneous combustion gangue coarse aggregate concrete laminated slabs (SCGACLSs) full-scale specimens were carried out. (2) Methods: The loading method was four-point unidirectional static loading; the failure mode, load–deflection curve, load–reinforcement strain curve, and load–concrete strain curve of each specimen were analyzed. In addition, the load–deflection curve of the five slabs were predicted by ABAQUS. (3) Results: The five laminated slabs showed similar behaviors in terms of failure mode, load–strain curve, load–deflection curve, and deformation and all the properties satisfied the Chinese standard GB50010 (2010). Compared with ordinary concrete laminated slabs, the cracking load of SCGACLS with a precast layer of SCGAC(C30) decreased by 15.2% and the span deflection increased by 28.3% in the ultimate condition; however, when the strength grade of SCGAC of the precast layer was increased to SCGAC(C40), the cracking load increased by 7.8% and the span deflection was similar to that of the ordinary concrete laminated slabs. All specimens conformed to the planar section assumption. In addition, the finite element model (FEM) prediction results showed that the maximum relative errors of load and deflection were <5% and <10%, respectively, indicating that the established FEM had high prediction accuracy. (4) Conclusions: The defects of reduced load-carrying capacity and uncoordinated deformation caused by the different elastic modulus of precast and cast-in-place layer concrete can be compensated by appropriately increasing the strength grade of precast layer concrete of SCGACLSs. The application of SCGACLSs in structures is feasible.

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Experimental study on the thermodynamic performance optimization of phase change energy storage permeable concrete

Zhang,

Zheng,

Zhai

et al. 2024

Construction and Building Materials

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Optimizing the Design Proportion of High-Performance Concrete via Using Response Surface Method

Cited by 7 publications

References 48 publications

Lithiophilic 3D Copper‐Based Magnetic Current Collector for Lithium‐Free Anode to Realize Deep Lithium Deposition

Lithiophilic 3D Copper‐Based Magnetic Current Collector for Lithium‐Free Anode to Realize Deep Lithium Deposition

Experimental and Numerical Study of the Flexural Performance of Spontaneous Combustion Gangue Coarse Aggregate Concrete Laminated Slab

Experimental study on the thermodynamic performance optimization of phase change energy storage permeable concrete

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