Degradation of fiber/matrix interface under various environmental and loading conditions: Insights from molecular simulations

Wu, Ruidong; Wang, Xing Quan; Zhao, Danyang; Hou, Jia-ao; Wu, Chao; Lau, Denvid; Tam, Lik‐ho

doi:10.1016/j.conbuildmat.2023.131101

Cited by 16 publications

(2 citation statements)

References 101 publications

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“…Computer simulation is a powerful tool for unravelling the bulk and interfacial properties at the molecular level. − ,− ,− In this work, the interfacial properties of the N 2 + H 2 O and N 2 + H 2 O + silica systems at high temperatures and pressures are investigated using molecular dynamics (MD) simulations. Furthermore, density gradient theory (DGT) based on the cubic-plus-association (CPA) equation of state (EoS) is used to predict the interfacial properties of the N 2 + H 2 O system.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Properties of the Nitrogen + Water System in the Presence of Hydrophilic Silica

Yao,

Narayanan Nair,

Che Ruslan

et al. 2024

Ind. Eng. Chem. Res.

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The interfacial properties of the N 2 + H 2 O and N 2 + H 2 O + silica systems were investigated (in the temperature range of 313−448 K and at pressures up to 50 MPa) by using extensive molecular dynamics simulations. The simulated interfacial tension (IFT) of the N 2 + H 2 O system is in line with our density gradient theory predictions based on the cubic-plusassociation equation of state and experimental data. These IFTs decrease with increasing pressure and temperature. The effects of pressure on these IFTs are less pronounced at high temperature. Here, the positive surface excess of N 2 explains the decreasing behavior of the IFT as a function of pressure. It can be seen that the surface excess of N 2 is reduced as the temperature is raised. This explains the less pronounced effects of the pressure on the IFTs at high temperature. The simulated water contact angle (CA) of the N 2 + water + silica system is in the range of 38.6−54.5°. An important finding is that under the studied conditions, these water CAs are not strongly influenced by temperature and pressure. Here we find that the effects of the IFT between H 2 O and N 2 are more pronounced on the adhesion tensions. The IFT between silica and H 2 O is found to be much lower than that between silica and N 2 under all conditions. Negligible amounts of N 2 were found to be adsorbed at the interface between the droplet and the silica surface. The relatively higher capillary pressure of the N 2 + H 2 O + silica system indicates that the presence of N 2 might be useful for the storage of CO 2 in saline aquifers.

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Section: Introductionmentioning

confidence: 99%

Interfacial Properties of the Nitrogen + Water System in the Presence of Hydrophilic Silica

Yao,

Narayanan Nair,

Che Ruslan

et al. 2024

Ind. Eng. Chem. Res.

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“…Its excellent strain-hardening capacity makes strong energy absorption [44,45]. In contrast, other FRP materials are susceptible to detachment and breakage from concrete matrix under high-displacement dynamic loads, such as earthquakes [46][47][48][49][50].…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Repairing Concrete with Ultra-High Molecular Weight Polyethylene Fiber Cloth: A Comprehensive Literature Review

Pan,

Tuladhar,

Yin

et al. 2024

Buildings

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This review explores the use of Ultra-High Molecular Weight Polyethylene (UHMWPE) fiber cloth as an innovative solution for the repair and reinforcement of concrete structures. UHMWPE is a polymer formed from a very large number of repeated ethylene (C2H4) units with higher molecular weight and long-chain crystallization than normal high-density polyethylene. With its superior tensile strength, elongation, and energy absorption capabilities, UHMWPE emerges as a promising alternative to traditional reinforcement materials like glass and carbon fibers. The paper reviews existing literature on fiber-reinforced polymer (FRP) applications in concrete repair in general, highlighting the unique benefits and potential of UHMWPE fiber cloth compared to other commonly used methods of strengthening concrete structures, such as enlarging concrete sections, near-surface embedded reinforcement, and externally bonded steel plate or other FRPs. Despite the scarcity of experimental data on UHMWPE for concrete repair, this review underscores its feasibility and calls for further research to fully harness its capabilities in civil engineering applications.

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Interfacial Integrity of Carbon Fiber/Epoxy Matrix Interface Under Loading Conditions

Tam,

Wu,

Hou

et al. 2024

Molecular Simulation Investigations of Property Degradation in CFRP Composite

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Degradation of fiber/matrix interface under various environmental and loading conditions: Insights from molecular simulations

Cited by 16 publications

References 101 publications

Interfacial Properties of the Nitrogen + Water System in the Presence of Hydrophilic Silica

Interfacial Properties of the Nitrogen + Water System in the Presence of Hydrophilic Silica

Feasibility of Repairing Concrete with Ultra-High Molecular Weight Polyethylene Fiber Cloth: A Comprehensive Literature Review

Interfacial Integrity of Carbon Fiber/Epoxy Matrix Interface Under Loading Conditions

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