Finite-Element Analysis on Percolation Performance of Foam Zinc

Liu, Yu; Liu, Jie; Deng, Yida; Han, Xiaopeng; Hu, Wenbin; Zhong, Cheng

doi:10.1021/acsomega.8b01580

Cited by 5 publications

(4 citation statements)

References 39 publications

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“…Such pore–skeleton structural mechanisms were also employed to tune the macroproperties of composites in different application scenarios. 33 , 34 …”

Section: Resultsmentioning

confidence: 99%

“…The lower pore anisotropy (Figure d) and skeleton tortuosity of SFCF-1 (Figure c) may account for the higher strength (Figure d). Such pore–skeleton structural mechanisms were also employed to tune the macroproperties of composites in different application scenarios. , …”

Section: Resultsmentioning

confidence: 99%

“…Such pore−skeleton structural mechanisms were also employed to tune the macroproperties of composites in different application scenarios. 33,34 Discussion on Foaming Mechanisms. In this work, all of the SFCFs possessed completely the same manufacturing processes; however, a largely different collapse strength and pore−skeleton structure was reported (Figures 7, 9 −11).…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Structure of Industrial Sacrificial Fragile Cementitious Foams

et al. 2022

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Sacrificial fragile cementitious foams (SFCFs) act as a core material of the engineered material arresting system (EMAS) installed in airports to enhance the safe take-offs and landings of aircrafts. The foam structures and foaming mechanisms that greatly impact the collapse strength, specific energy, and arresting efficiency of SFCFs, however, have not been fully addressed. Herein, the engineering properties, chemical characteristics, and pore–skeleton structures of three batches of industrial SFCFs were experimentally investigated. Penetration tests showed significant differences in collapse strength and specific energy among the SFCFs with a similar density. Three-dimensional (3D) pore–skeleton structures were resolved by microfocused X-ray computed tomography. The pore–skeleton anisotropy was investigated to uncover the stages of differences in the SFCFs’ engineering properties. The results demonstrate that the pore anisotropy rather than the porosity dominates the collapse of cementitious foams. Viscosity-associated nucleation and growth mechanisms were proposed to account for the featured pore–skeleton structures of the SFCFs. The findings would contribute to better pore structure controls of SFCFs toward the improved quality of EMAS.

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“…Such pore–skeleton structural mechanisms were also employed to tune the macroproperties of composites in different application scenarios. 33 , 34 …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Structure of Industrial Sacrificial Fragile Cementitious Foams

et al. 2022

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“…The expressions for the coefficients in eqs 20 and 21 can be calculated by Gaussian integration. 30 The equation for controlling the volume fraction of the fluid shown in eq 8 can be written as…”

Section: Model Solutionmentioning

confidence: 99%

Research on Flow Patterns of Two-Phase Fracturing Fluid in Hydraulic Fracture Considering the Fluid Leak-off

Chen,

Li,

Song

et al. 2024

ACS Omega

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In in situ-generated proppant fracturing technology without proppant injection, the distribution of the flow pattern of two-phase fracturing fluid in the fracture determines the concentration of proppant particles formed by phase change in different positions. Therefore, the study of a two-phase fracturing fluid flow pattern is of great significance to reveal the formation mechanisms of different flow patterns and guide the on-site implementation of the technology. This paper establishes a mathematical model for the two-phase fracturing fluids in fractures based on their physical properties and presents numerical experiments on the flow pattern of two-phase fracturing fluids under different conditions of injection displacement, interfacial tension, and phase change liquid (PCL) ratio. The results show that at lower injection displacements, such as 3 or 4 m 3 /min, it is easier to form striped shape distributions, and at higher injection displacements, such as 5 or 6 m 3 /min, it is easier to form droplet shape distributions. When the interfacial tension is low (15 mN/ m), PCL shrinks less and is distributed in strips; when the interfacial tension is high (25, 35, and 45 mN/m), PCL shrinks more and mainly forms droplet-shaped distributions. PCL tends to form discrete droplet shape distributions at PCL volume fractions of 10, and 20%. At 30% volume fraction, PCL is distributed in strips, and at 40% volume fraction, PCL forms strips of a larger size. These findings reveal the changing pattern of two-phase fracturing fluid flow and enrich the theoretical system of in situ-generated proppant fracturing technology, which can provide theoretical support for the on-site implementation of this technology.

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