Publications by authors named "I Ardelean"
This article proposes the synthesis and characterization of (triethylene glycol dimethacrylate-N,N-dihydroxyethyl-p-toluidine) TEGDMA-DHEPT self-healing microcapsules for their inclusion in dental composite formulations. The obtaining method is the in situ emulsion polymerization of the (poly urea-formaldehyde) (PUF) coatings. The microcapsules were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM), high-performance liquid chromatography (HPLC), and low-field nuclear magnetic resonance (NMR) techniques.
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- Cytopathology and histopathology are essential for diagnosing cancer and precancerous conditions, with fine-needle aspiration (FNA) being a minimally invasive technique for obtaining tissue biopsies.
- FNA is particularly effective for confirming suspected cancer recurrence and diagnosing benign or malignant tumors, especially in cases where tumors are inoperable.
- The use of immunohistochemistry alongside traditional histopathology enhances diagnostic accuracy, especially for identifying the origin of metastatic diseases.
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- Incorporating blast furnace slag into paving concrete can effectively reduce waste from pig iron production and support environmental efforts.
- Recent studies have explored using granulated and air-cooled slag as substitutes for traditional cement and aggregates, but the impact on concrete's mechanical properties needs careful examination.
- The research identifies optimal ratios of 15% granulated ground blast furnace slag and 25% air-cooled slag to achieve performance comparable to standard concrete, showing a significant increase in flexural strength over time.
Article Synopsis
- Urban areas are expanding rapidly, increasing the demand for concrete and highlighting the need to reduce its environmental impact, especially through the use of supplementary cementitious materials (SCM) like zeolites.
- The study replaces ordinary Portland cement (OPC) with natural zeolite at varying percentages (10%, 20%, and 30%) and investigates pore structure and microstructure changes in cement pastes over time.
- Findings reveal that cement pastes with zeolite initially have smaller pore sizes, but by 28 days, those with 10% zeolite resemble the reference mix, while 30% zeolite increases pore size due to higher amounts of hydration products.
The rapid increase in additive manufacturing applications in all industries has highlighted the lack of innovative technologies and processes in the construction industry. Several European and international policies are in place to guide the development of the technological processes involved in the construction industry toward a sustainable future. Considering the global concerns regarding this industry, the purpose of this study was to develop new cement-based materials that are capable of accelerated hydration and early strength development for use in additive manufacturing.
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