MaterialsPub Date : 2025-02-06DOI: 10.3390/ma18030717
Besarta Cheliku Ramadani, Jeta Sela, Leon Stojanov, Sofija Popovska, Valentin Mirčeski, Miha Bukleski, Sandra Dimitrovska-Lazova, Arianit A Reka, Slobotka Aleksovska
{"title":"Synthesis, Characterization, and Electrocatalytic Properties of PrMn<sub>0.5</sub>M<sub>0.5</sub>O<sub>3</sub> (M = Cr, Fe, Co, Ni) Perovskites.","authors":"Besarta Cheliku Ramadani, Jeta Sela, Leon Stojanov, Sofija Popovska, Valentin Mirčeski, Miha Bukleski, Sandra Dimitrovska-Lazova, Arianit A Reka, Slobotka Aleksovska","doi":"10.3390/ma18030717","DOIUrl":"10.3390/ma18030717","url":null,"abstract":"<p><p>In this paper, the synthesis, characterization, and investigation of electrocatalytic properties of perovskites of general formula PrMn<sub>0.5</sub>M<sub>0.5</sub>O<sub>3</sub> (M = Cr, Fe, Co, Ni) are presented. The synthesis was conducted by the solution combustion method using glycine as a fuel. The perovskite with the formula PrMn<sub>0.5</sub>Fe<sub>0.5</sub>O<sub>3</sub> was also synthesized by the sol-gel combustion method with citric acid as fuel. The obtained perovskites were investigated by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDX), infrared spectroscopy, and cyclic voltammetry. The XRPD patterns showed that the compounds are pure and isostructural within the series. The unit cell parameters of the compounds were determined within the <i>Pnma</i> space group, and several crystallochemical parameters were calculated and discussed. The recorded SEM images of the perovskites revealed a porous morphology, while the EDX analysis confirmed the 2:1:1 atomic percentage ratio of Pr:Mn:M. Within this investigation, the electrocatalytic properties of the obtained perovskites towards oxidation of OH<sup>-</sup> ions and H<sub>2</sub>O<sub>2</sub> oxidation in phosphate buffer were studied by cyclic voltammetry, using a paraffin-impregnated graphite electrode (PIGE) modified with microcrystals of the investigated perovskites. PrMn<sub>0.5</sub>Fe<sub>0.5</sub>O<sub>3</sub> showed high electrocatalytic activity for OH<sup>-</sup> oxidation, while both PrMn<sub>0.5</sub>Fe<sub>0.5</sub>O<sub>3</sub> and PrMn<sub>0.5</sub>Co<sub>0.5</sub>O<sub>3</sub> exhibited significant efficiency for H<sub>2</sub>O<sub>2</sub> oxidation, with a distinct oxidation peak with a peak potential of 0.6 V.</p>","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11820077/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MaterialsPub Date : 2025-02-06DOI: 10.3390/ma18030709
Alessia Giordana, Chiara Cavazzoli, Francesca Fraulini, Paolo Zardi, Alfonso Zambon, Giuseppina Cerrato, Gigliola Lusvardi
{"title":"Evaluation of the Properties of Bioactive Mesoporous Glasses Doped with Cerium and Loaded with Polyphenols.","authors":"Alessia Giordana, Chiara Cavazzoli, Francesca Fraulini, Paolo Zardi, Alfonso Zambon, Giuseppina Cerrato, Gigliola Lusvardi","doi":"10.3390/ma18030709","DOIUrl":"10.3390/ma18030709","url":null,"abstract":"<p><p>(1) Background: The onset of inflammation and oxidative stress after biomaterial implantation can lead to complications and prolonged recovery times. To address this, bioactive mesoporous glasses doped with cerium (0, 3.6 and 5.3 mol%) were loaded with three different biomolecules-3-hydroxyflavone, quercetin and morin hydrate-to enhance antioxidant properties while preserving bioactivity. (2) Methods: Elemental analysis, specific surface area determination, spectroscopic techniques, evaluation of antioxidant activity and in vitro bioactivity assessment were performed to characterize mesoporous glass loaded with biomolecules. (3) Results: Biomolecule loading gives values in the range of 0.5-2.0% and 10.3-39.6% for loading content and loading efficiency, respectively. The loading order is quercetin > morine hydrate > 3-hydroxyflavone, and a cerium percentage of 3.6 seems to be a good compromise. The antioxidant properties evaluated on both solids and solutions in contact with simulated biological fluids improve markedly over loaded glasses, and the most promising results are obtained with quercetin. In the most efficient systems, the bioactivity results were delayed and more evident at longer times (168 h) but were still retained. (4) Conclusions: We obtained new materials still bioactive with improved antioxidant properties that can be proposed for the regeneration of both hard and soft tissues.</p>","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11821127/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MaterialsPub Date : 2025-02-06DOI: 10.3390/ma18030711
Vincent Plée, Jordan Lacam, Gianni Pascoli, Claire Meyer
{"title":"Evolution of Focal Conic Domains in SmA-N Phase Transition.","authors":"Vincent Plée, Jordan Lacam, Gianni Pascoli, Claire Meyer","doi":"10.3390/ma18030711","DOIUrl":"10.3390/ma18030711","url":null,"abstract":"<p><p>Focal conics are nice geometric structures of liquid crystal phases which present periodicity such as smectic phase, cholesteric phase, etc. Here, we focus on focal conic domains (FCD) in smectic A liquid crystal. During a phase transition from smectic A to nematic, these FCDs evolve as the eccentricity increases until they completely disappear. Here, we present experimental observations of this phenomenon, along with a modeling approach that allows for an interestingly precise description of the phenomenon, revealing, in particular, a coefficient that seems to exhibit the behavior of a critical exponent.</p>","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11819984/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MaterialsPub Date : 2025-02-06DOI: 10.3390/ma18030706
Kailei Sun, Linsheng Luo, Xu Wang
{"title":"Thermodynamic and Electrochemical Characterization of Nd* (III) Ion Diffusion in (LiF-CaF<sub>2</sub>)-Nd<sub>2</sub>O<sub>3</sub> Molten Salts.","authors":"Kailei Sun, Linsheng Luo, Xu Wang","doi":"10.3390/ma18030706","DOIUrl":"10.3390/ma18030706","url":null,"abstract":"<p><p>Data on the diffusion and migration characteristics of rare earth metal ions in fluoride molten salt systems are crucial for optimizing the electrolytic preparation of rare earth metals and alloys. This study investigated the solubility, conductivity, and density of the (LiF-CaF<sub>2</sub>)<sub>eut.</sub> system saturated with Nd₂O₃ using the isothermal saturation method, conductivity cell constant variation, and the Archimedes method, respectively. Employing the Hittorf method's principles, a three-compartment electrolyzer was designed to determine the mobility number of dissolved Nd* (III) ions in the saturated (LiF-CaF<sub>2</sub>)<sub>eut.</sub>-Nd<sub>2</sub>O<sub>3</sub> system. The radial distribution function was computed via ab initio molecular dynamics, and the self-diffusion coefficient of ions in the system was analyzed. Utilizing the Nernst-Einstein equation, the diffusion coefficient of Nd* (III) ions was calculated. The solubility, conductivity, and density of the saturated (LiF-CaF<sub>2</sub>)<sub>eut.</sub>-Nd<sub>2</sub>O<sub>3</sub> system exhibit linear variation within 1173-1473 K. The mobility number of solvated Nd* (III) ions increases linearly with temperature, displaying nonlinear variation with potential within 3.5-4.5 V, and gradually decreases after reaching a maximum of 4.0-4.25 V. The radial distribution function reveals the highest diffusion and mobility barriers for Nd* (III) ions, with solvated O* (II) ions presenting the most significant hindrance. The Nd* (III) ion diffusion coefficients linearly increase with temperature (1123-1373 K) under specific potential conditions (3.5-4.5 V) but exhibit nonlinear changes with potential (3.5-4.5 V) under fixed temperature conditions (1123-1373 K), then decrease after peaking within 4.0-4.5 V. The diffusion coefficients of Nd* (III) ions are sensitive to potential changes.</p>","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11820673/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143409075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Comparison Between the Residual Stresses of Ti6Al4V and Ti-6Al-2Sn-4Zr-6Mo Processed by Laser Powder Bed Fusion.","authors":"Alberta Aversa, Alessandro Carrozza, Vincenza Mercurio, Flaviana Calignano, Olha Sereda, Vaclav Pejchal, Mariangela Lombardi","doi":"10.3390/ma18030689","DOIUrl":"10.3390/ma18030689","url":null,"abstract":"<p><p>Metal additive manufacturing processes induce residual stress in as-built components. These residual stresses are detrimental to part quality as they can induce defects such as warping and delamination. In some cases, when complex components are built, residual stress can even cause a build job to fail due to the recoater crashing into the distorted part. In this paper, the residual stress values of Ti6Al4V and Ti-6Al-2Sn-4Zr-6Mo alloys were evaluated by the cantilever approach and by the X-ray diffraction sin<sup>2</sup>(Ψ) method. The results showed that, as expected, Ti6Al4V as-built cantilevers displayed high distortion and von Mises equivalent stress values up to 494 MPa. On the contrary, as-built Ti-6Al-2Sn-4Zr-6Mo cantilevers were characterized by almost null warping and a residual stress value in the as-built state of 191 MPa. This different behavior is mainly due to the different properties of the hexagonal α' martensite in Ti6Al4V and the soft orthorhombic α'' martensite in Ti6246. The post-processing heat treatment significantly reduced the residual stress in Ti6Al4V, lowering it to 44 MPa, while, in the case of Ti-6Al-2Sn-4Zr-6Mo, the post-processing heat treatment did not affect the residual stress conditions. These findings suggest that Ti-6Al-2Sn-4Zr-6Mo could be a suitable candidate for the additive manufacturing production of extremely complex parts, as it could reduce the risks associated with recoater crashes and job failures.</p>","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11819817/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MaterialsPub Date : 2025-02-05DOI: 10.3390/ma18030699
Tijana Radojičić, Katarina Trivunac, Marija Vukčević, Marina Maletić, Nataša Palić, Ivona Janković-Častvan, Aleksandra Perić Grujić
{"title":"Rare Earth Element Adsorption from Water Using Alkali-Activated Waste Fly Ash.","authors":"Tijana Radojičić, Katarina Trivunac, Marija Vukčević, Marina Maletić, Nataša Palić, Ivona Janković-Častvan, Aleksandra Perić Grujić","doi":"10.3390/ma18030699","DOIUrl":"10.3390/ma18030699","url":null,"abstract":"<p><p>As new technologies are developed, the demand for rare earth elements (REEs) has increased, despite limited awareness of their significant impact on people and the environment. In this study, waste fly ash was used as a precursor to synthesize inorganic aluminosilicate polymers by adding an activator to the alumina and silica compounds of the ash. Due to their structure and adsorption potential, their application for the removal of selected REEs (Gd<sup>3+</sup>, Y<sup>3+</sup>, and Sc<sup>3+</sup>) from water has been investigated. A decrease in the intensity of the quartz peak at 2θ of 26.6° in the XRD spectrum and the disappearance of the albite and mullite peaks due to dissolution during alkaline activation in both modified samples were observed. The appearance of a peaks at 2θ of 29.3° and 39.3° corresponding to calcite in the modified sample indicates the presence of wood ash. A shifting of the band in the DRIFT spectrum to 1030 cm<sup>-1</sup> on the spectra of modified samples corresponds to the vibrations of Al-O and Si-O bonds and the formation of a polymeric network structure (Si-O-Si or Si-O-Al). According to pH<sub>PZC</sub> values, thermodynamic and kinetic parameters, and chemical composition, the presumed mechanism of REE adsorption is chemisorption and ion exchange. The highest adsorption efficiencies (up to 95%) for all examined REEs in both single and mixed REE solutions were obtained from an alkali-activated mixture of fly ash and wood ash. The results of this research are significant for expanding knowledge about the removal of REEs from the environment, the reduction of waste ash by their modification, and their potential subsequent use in construction as additives.</p>","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11819694/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143409002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MaterialsPub Date : 2025-02-05DOI: 10.3390/ma18030695
Aziz Ul Hassan Mohsan, Mina Zhang, Menggang Zhai, Yishen Wang, Mudaser Ullah, Xuedao Shu, Su Zhao
{"title":"Effect of Dilution on Microstructure and Phase Transformation of AlCrFeMnNi High-Entropy Alloy by Resonant Ultrasonic Vibration-Assisted Laser Cladding.","authors":"Aziz Ul Hassan Mohsan, Mina Zhang, Menggang Zhai, Yishen Wang, Mudaser Ullah, Xuedao Shu, Su Zhao","doi":"10.3390/ma18030695","DOIUrl":"10.3390/ma18030695","url":null,"abstract":"<p><p>The present study effectively produced a high-entropy alloy (HEA) coating of AlCrFeMnNi on AISI 304L steel using resonant ultrasonic vibration-assisted laser cladding (R-UVALC). An investigation was conducted to examine the impact of dilution rate on the phase composition, microstructure, and mechanical and tribological properties of AlCrFeMnNi coatings. The coating, which was created utilizing the appropriate dilution rate, was thoroughly characterized using EDS mapping and TEM investigation. The results suggest that a higher dilution rate causes a change in the AlCrFeMnNi coating, transforming it from a single solid solution phase (BCC) into a two-phase solid solution containing both FCC and BCC phases. The analysis conducted using transmission electron microscopy (TEM) reveals that the AlCrFeMnNi coating, when diluted at an optimal rate of around 37%, is predominantly composed of a disordered body-centered cubic (BCC) phase and an ordered BCC (B2) phase featuring a spinodal decomposition structure. The AlCrFeMnNi coating has an average microhardness of approximately 540 HV, which is over 2.5 times higher than the microhardness of the substrate. Additionally, it was also established that the dilution rate has an impact on the occurrence of phases, which subsequently affects the mechanical and antifrictional properties of the coating. The integration of ultrasonic vibration in laser cladding enhances quality and improves mechanical and tribological properties, thereby reducing material costs and promoting an environmentally friendly process when compared to conventional cladding.</p>","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11819736/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MaterialsPub Date : 2025-02-05DOI: 10.3390/ma18030702
Pollyanna Nogueira Ferreira da Silva, Fernanda Calvo Costa, Célio Dos Santos Silva, Maria Carolina Barcellos, Sílvio Manea, Odair Lellis Gonçalez, Vitor Ribeiro Jardim, Gislene Valdete Martins, Nelson Lima, Anelyse Arata Found, Grace Mendonca De Souza, Rubens Nisie Tango
{"title":"Effect of Gamma Radiation on the Wear Potential of Hybrid Ceramic to Tooth Enamel.","authors":"Pollyanna Nogueira Ferreira da Silva, Fernanda Calvo Costa, Célio Dos Santos Silva, Maria Carolina Barcellos, Sílvio Manea, Odair Lellis Gonçalez, Vitor Ribeiro Jardim, Gislene Valdete Martins, Nelson Lima, Anelyse Arata Found, Grace Mendonca De Souza, Rubens Nisie Tango","doi":"10.3390/ma18030702","DOIUrl":"10.3390/ma18030702","url":null,"abstract":"<p><p>Hybrid ceramics exhibit low wear on antagonist tooth enamel, which may positively impact the oral rehabilitation of head-and-neck irradiated patients who experience alterations in tooth microstructure and wear resistance. This study aimed to evaluate the wear resistance of hybrid ceramics after gamma radiation exposure in contact with irradiated tooth enamel, as well as their mechanical and chemical properties. Notably, no previous studies focusing on the effects of radiation on hybrid ceramics were found in the literature. Vita Enamic discs and tooth fragments were subjected to daily doses of 2 Gy, totaling 0, 20, 40, 50, 60, and 70 Gy. The wear resistance of hybrid ceramics and a ceramic enamel analog (steatite) was tested against tooth enamel using a chewing simulation machine. Hybrid ceramic specimens underwent hardness, biaxial flexural strength, roughness, and FT-IR analyses. The data were analyzed using an ANOVA and Tukey's test (α = 0.05). Enamic exposed to 60 and 70 Gy exhibited higher wear and caused less tooth enamel loss compared to steatite. The mechanical and chemical properties remained unchanged after irradiation. The roughness decreased across all groups after a chewing simulation but was not affected by irradiation. In conclusion, ionizing radiation did not alter the material's properties but increased its wear.</p>","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11820557/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MaterialsPub Date : 2025-02-05DOI: 10.3390/ma18030690
Alessio Perrone, Muhammad R Aziz, Nikolaos A Vainos
{"title":"The Influence of Laser Cleaning Treatment on the Quantum Efficiency of the Most Used Metallic Photocathodes: An Overview.","authors":"Alessio Perrone, Muhammad R Aziz, Nikolaos A Vainos","doi":"10.3390/ma18030690","DOIUrl":"10.3390/ma18030690","url":null,"abstract":"<p><p>This paper presents a comprehensive investigation into the quantum efficiency (QE) of metallic photocathodes used in modern high-performance radio frequency (RF) and superconducting radio frequency (SRF) guns. The study specifically examines how laser cleaning treatment impacts the QE of these photocathodes, providing detailed insights into their performance and potential improvements for accelerator applications, and assesses the chemical and environmental factors affecting the surface composition of metallic laser-photocathodes used in modern high-performance radio frequency (RF) and superconducting radio frequency (SRF) electron guns. This paper overviews the photocathode rejuvenation effects of laser cleaning treatment. Laser cleaning removes the oxides and hydrides responsible for the deterioration of photocathodes, increases the photoelectron emission quantum efficiency (QE) and extends the operational lifetime of high-brightness electron injectors. QE enhancement is analyzed with the aim of parametric cleaning process optimization. This study excludes semiconductor and thermionic cathodes, focusing solely on the widely used bulk and thin-film photocathodes of Cu, Mg, Y, Pb and Nb. Laser cleaning enhancement of QE in Cu from 5 × 10<sup>-5</sup> to 1.2 × 10<sup>-4</sup>, in Mg from 5.0 × 10<sup>-4</sup> to 1.8 × 10<sup>-3</sup>, in Y from 10<sup>-5</sup> to 3.3 × 10<sup>-4</sup>, in Pb from 3 × 10<sup>-5</sup> to 8 × 10<sup>-5</sup>, and in Nb from 2.1 × 10<sup>-7</sup> to 2.5 × 10<sup>-5</sup> is demonstrated. The analysis concludes with a specialized practical guide for improving photocathode efficacy and lifetime in RF and SRF guns.</p>","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11820783/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MaterialsPub Date : 2025-02-05DOI: 10.3390/ma18030696
Xiaoqi Wan, Zhiyou Jia, Nannan Li, Hua Luo
{"title":"Impact of Recycled Fine Aggregate on Physical and Mechanical Properties of Green Mortar.","authors":"Xiaoqi Wan, Zhiyou Jia, Nannan Li, Hua Luo","doi":"10.3390/ma18030696","DOIUrl":"10.3390/ma18030696","url":null,"abstract":"<p><p>Through research that combined green environmental protection with the resource usage of solid waste, we explored more possibilities for mortar using recycled fine aggregate (RFA) as a material. In this work, natural fine aggregate (NFA) with different proportions of RFA in mortar was produced, while maintaining the same particle size distribution. Four types of mortar were produced, with replacement ratios of 25%, 50%, 75%, and 100%, as well as a reference mortar type without RFA. A comprehensive evaluation of the mortar with different proportions was conducted, including its workability, density, capillary water absorption, compressive strength, and flexural strength. The results indicated that the compressive strength and flexural strength of mortar containing 50% RFA improve within 14 days. In addition, with increased RFA usage, the mortar's mechanical properties decreased. The data obtained from this study will help in the application of RFA in green mortar.</p>","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11820946/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}