Freeze–thaw field exposure and testing the reliability of performance test temperature cycle for concrete scaling in presence of de-icing salts

Sleiman, Sara Al Haj; Izoret, Laurent; Alam, Syed Yasir; Grondin, Frédéric; Loukili, Ahmed

doi:10.1617/s11527-021-01831-6

Cited by 5 publications

(5 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In line with those investigations, authors such as Sara Al Haj Sleiman et al study the performance of concrete in freeze-thaw filled exposure [10]. This study outlined the lack of normative methods related to concrete characterization in the presence of de-icing salts [10]. Authors such as Aref Ebrahimi et al or Jan Deja focused on the concrete properties variation considering freezing and de-icing effects on them [11,12].…”

Section: State Of the Artmentioning

confidence: 86%

“…Other authors such as Meijie Xie et al focused on the development of numerical models to predict chloride ingress in concrete subjected to atmospheric carbonation and de-icing salts usage [9]. In line with those investigations, authors such as Sara Al Haj Sleiman et al study the performance of concrete in freeze-thaw filled exposure [10]. This study outlined the lack of normative methods related to concrete characterization in the presence of de-icing salts [10].…”

Section: State Of the Artmentioning

confidence: 96%

See 1 more Smart Citation

The Use of De-Icing Salts in Post-Tensioned Concrete Slabs and Their Effects on the Life of the Structure

Alonso

Moraleda²,

Alberti

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

This article expounds on the problem of the use of de-icing salts in the corrosion of steel rebars in bridge decks and their effect on post-tensioning elements. In particular, this paper focuses this problem on structures affected by an aggregate–alkali reaction and without any waterproof treatment using the example of one structure whose repair was carried out in 2020. In this structure, the internal stresses due to the aggregate–alkali reaction caused longitudinal cracks in the upper face of the deck, through which the penetration of chloride ions was concentrated, causing, finally, the brittle fracture of the steel bars and the corrosion of the prestressing elements. This article also explains some conclusions about the most probable mechanisms that resulted in the brittle fracture of the steel bars due to the extraordinary and unexpected nature of this phenomenon.

show abstract

Section: State Of the Artmentioning

confidence: 86%

Section: State Of the Artmentioning

confidence: 96%

The Use of De-Icing Salts in Post-Tensioned Concrete Slabs and Their Effects on the Life of the Structure

Alonso

Moraleda²,

Alberti

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Temperature around 20°C in a water bath or in ambient air provide the ideal thawing conditions. 27,28 Thermal stability analysis (DSC)…”

Section: Freeze Thaw Methodsmentioning

confidence: 99%

Formulation and Evaluation of Pluronic F-127 Assisted Carboplatin Cubosomes

Alamoudi,

Almoshari,

Alotaibi

2023

Ind. J. Pharm. Edu. Res

View full text Add to dashboard Cite

Objectives:The objective of this study was to prepare carboplatin loaded cubosomes using high sheer homogenization technique. Materials and Methods: The cubosomes were prepared using Glyceryl Monooleate (GMO) as a lipophilic carrier along with pluronic F-127 (PF-127) and tween 80 as additive of the formulation. All the ingredients were subjected to chemical compatibility studies by Fourier Transform Infra-Red (FTIR) spectroscopy, thermal analysis using Differential Scanning Calorimetry (DSC), whereas X-ray Diffraction (XRD) studies were performed to evaluate the nature of drug in pure form as well as in formulation. The prepared cubosomes were characterized for their size and surface charge, surface morphology, drug release studies and drug permeation studies. Results: FTIR has confirmed the chemical compatibilities of the ingredients, while DSC has exhibited the thermal stabilities of the drug in alone as well as in cubosomes. The XRD has reviled that drug was crystalline, but upon incorporation in cubosmes, the crystallinity has reduced remarkably. The prepared cubosomes were of nanosized (diameter of 227 nm) and cubical in shape. The in vitro drug release and drug permeation studies have showed that concentration of both GMO and PF-127 has effected the release as well as permeation of the drug. However, in 3 hr studies the maximum amount of drug release was ~84% and that of permeation was ~74%. Conclusion: Conclusively, the selected composition of the formulation was suitable enough to prepare the nanosized cubosomes showing suitable entrapment efficiency of the drug.

show abstract

“…The finest thawing conditions are either in a water bath or in ambient air at a temperature below 20°C. 37,38 Thermal stability analysis (DSC)…”

Section: Freeze-thaw Methodsmentioning

confidence: 99%

Fabrication and Evaluation of Poloxamer Facilitated, Glyceryl Monooleate based 5-Fluorouracil Cubosomes

Alamoudi,

Almoshari,

Alotaibi

2023

Ind. J. Pharm. Edu. Res

View full text Add to dashboard Cite

Objectives: This study aims to prepare a topical cubosomal formulation that contains 5-Fluorouracil (5-FU), a hydrophilic anti-cancer drug, that belongs to the Biopharmaceutics Classification System (BCS-III) i.e., high solubility and low permeability. Materials and Methods:The 5-FU loaded cubosomes were prepared using Glyceryl Monooleate (GMO) as a lipid polymer, in the presence of Poloxamer 407 (Polox-407) and Tween 80 (T80) as stabilizers. Four formulations of cubosomes were formulated by varying concentrations of Polox-407 and GMO while keeping the concentration of T80 constant. A melting, followed by homogenization technique has been used for the preparation of 5-FU cubosomes. Several In vitro characterization experiments, chemical compatibility studies, pH, viscosity, Scanning Electron Microscopy (SEM), particle size analysis, zeta potential, in vitro drug release studies, in vitro permeation study, and stability studies were performed. Results: The compatibility studies have confirmed the chemical compatibility of the drug and ingredients, while stability analysis has assured that the prepared formulations were stable. Particle size analysis and surface morphology showed that particles were nano-sized with suitable cubical shapes, well segregated from each other. The zeta potential was -0.6 mV and viscosity has been recorded as 18 cP. The drug release and permeation studies revealed that the cumulative amount of the drug was 95% and 94% respectively. Conclusion: Altogether, these findings suggested that upon further optimization, this formulation may have the potential to be translated as an effective therapy for the clinical management of superficial cancers.

show abstract

Freeze–thaw field exposure and testing the reliability of performance test temperature cycle for concrete scaling in presence of de-icing salts

Cited by 5 publications

References 16 publications

The Use of De-Icing Salts in Post-Tensioned Concrete Slabs and Their Effects on the Life of the Structure

The Use of De-Icing Salts in Post-Tensioned Concrete Slabs and Their Effects on the Life of the Structure

Formulation and Evaluation of Pluronic F-127 Assisted Carboplatin Cubosomes

Fabrication and Evaluation of Poloxamer Facilitated, Glyceryl Monooleate based 5-Fluorouracil Cubosomes

Contact Info

Product

Resources

About