Article
Environmental Sciences
Ahmed S. Elshimy, Aref A. Abadel, Hussam Alghamdi, Rabin Tuladhar, Tarek M. El-Sokkary, Hamdy A. Abdel-Gawwad, Moaaz K. Seliem
Summary: This study presents a method for fully recycling dolomite waste in the production of a new cementitious material. By mixing different alkali-activators with dolomite waste powder and curing at room temperature, a wide range of compressive strengths can be achieved. The use of sodium silicate as an activator significantly improves the compressive strengths, while the use of sodium hydroxide results in modest strengths.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Ceramics
Lixing Song, Xueshan Du, Yiwei Li, Yufu Sun
Summary: Adding hydroxides (NaOH, KOH, and LiOH) can improve the strength and collapsibility of sodium silicate bonded sand. Among them, LiOH has the best adsorption capacity and the most effective modification effect. Adding 0.2% LiOH can increase the instant strength and 24 h strength of SSBS by 96.7% and 23.9% respectively, and decrease the residual strength at 800 degrees C by 40.1%. The bonded bridge of SSBCS is smoother and tighter at room temperature, increasing instant strength and 24 h strength. During heating and cooling at 800 degrees C, cracks and holes appeared on the surface of the bonded bridge, improving the collapsibility of SSBCS.
CERAMICS INTERNATIONAL
(2023)
Article
Construction & Building Technology
Osama A. Mohamed
Summary: This study evaluated the effect of immersing slag mortar in highly acid solution on its compressive strength development and stability. It was found that immersing the mortar in sulfuric acid solution did not decrease the strength or mass, and water acted as a positive curing medium.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
A. S. Bature, M. Khorami, E. Ganjian, M. Tyrer
Summary: This paper investigated the compressive strength and microstructure of iron-rich, calcined clay based geopolymer mortars activated by two forms of sodium silicate solutions. The strength of mortars activated in a pressure reactor vessel was significantly higher than those activated under normal atmospheric conditions.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Wenqiang Ruan, Jianguo Liao, Xinqi Gu, Jiajia Mo, Mengmeng Cai, Wenjie Guo, Fengheng Li, Yu Zhu, Xiaoe Ma
Summary: This study investigates the effects of bauxite tailings (BTs) and sodium silicate (NA) on the mechanical properties and hydration mechanism of magnesium phosphate cement (MPC). The results show that adding 15.0 wt% BTs can reduce the production cost of MPC without decreasing its strength. NA can enhance the strength and water resistance, delay the setting time, and decrease the cumulative heat release during hydration. The addition of BTs and NA reduces the generation of microcracks and improves the performance of MPC.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Magnolia Soto-Felix, Francisco Javier Baldenebro-Lopez, Caleb Carreno-Gallardo, Jose Martin Herrera-Ramirez
Summary: The influence of ZnO addition on hybrid pastes was investigated. The results showed that the addition of ZnO can delay setting time, improve compressive strength, without affecting the microstructure.
Article
Construction & Building Technology
Yuhan Feng, Hongyan Zhao, Jin Liu, Zezhuo Song, Wenyue Che, Ke Ma, Ying Wang
Summary: This paper investigates the effects of a self-developed porous organic polymer material (SPOP) on the mechanical properties and microstructure of treated sand under wetting-drying cycles. The results show that the addition of SPOP significantly enhances the mechanical strength, elastic modulus, and cohesion of the sand. The mechanical properties initially increase and then decrease with the increase of SPOP content, peaking at 3% SPOP content. Wetting-drying cycles have a significant impact on the mechanical properties, with a decrease in performance as the number of cycles increases.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Hua Yuan, Kang Liu, Changguang Zhang, Zhiliang Zhao
Summary: The study investigated the impact of Na-montmorillonite content on enzyme-induced carbonate precipitation (EICP) treated soil, revealing that an optimal 8% Na-Mt content significantly enhanced soil strength and Ca2+ utilization ratio.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Muhammad Zain-ul-abdein, Furqan Ahmed, Iftikhar Ahmed Channa, Muhammad Atif Makhdoom, Raza Ali, Muhammad Ehsan, Abdullah Aamir, Ehsan Ul Haq, Muhammad Nadeem, Hafiz Zahid Shafi, Muhammad Ali Shar, Abdulaziz Alhazaa
Summary: The study investigates the use of natural soil-based geopolymers as environmentally friendly construction materials, aiming to reduce harmful gas emissions and improve mechanical strength. It was found that increasing the proportion of NS leads to a significant enhancement of geopolymerization and better mechanical strength.
Article
Construction & Building Technology
Eyubhan Avci, Emre Deveci, Aydin Gokce
Summary: The experimental study investigates the effect of adding sodium silicate into an ultrafine-cement-suspension injection on the strength and permeability properties of grouted sand samples. It was found that the addition of sodium silicate increased the unconfined compressive strength, reduced permeability, and accelerated the strength gain of injected samples. Overall, the study demonstrates that sodium silicate can improve the strength and permeability properties of sand samples after injection.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Construction & Building Technology
Yitian Xu, Tao Wei, Guoqing Chen, Jingen Ma, Ming Yan
Summary: This paper investigates the mechanism and characteristics of water glass curing sandy soil at different temperatures. The results show that the effect of high temperature on the gel layer is stronger than at room temperature, and the longer the room temperature curing time, the weaker the effect of high temperature on the specimen. After high-temperature curing, the strength of the specimens significantly increases, and the growth rate and deterioration rate of the strength also increase significantly.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Guodong Huang, Xukang Zhang, Meng Liu, Bing Fang, Chengcheng Wang, Huafeng Mi
Summary: Using different mineral additives and activators to prepare alkali-activated materials, the effects on mixing flowability and compressive strength, as well as the compatibility between them, were studied. The results showed that Ca(OH)2 improved compressive strength but reduced mixing flowability, CaSO4.2H2O caused a drop in compressive strength and reduced mixing flowability significantly, while CaCO3 had no influence. Furthermore, establishing a strong alkaline environment using NaOH was a prerequisite for the progress of alkali-activated reaction.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Chemical
Ibrahim Cavusoglu, Erol Yilmaz, Ali Osman Yilmaz
Summary: This study investigated the effect of sodium silicate on early mechanical and microstructure properties of cemented coal fly ash backfill. Results showed that sodium silicate can improve the short-term strength of CCB and reduce the setting time, contributing to efficiency in coal mining operations.
Article
Polymer Science
Kehinde Lemboye, Abdullah Almajed
Summary: In recent years, there has been a focus on using sustainable and eco-friendly materials for improving soil properties. This study examined the effectiveness of three biopolymers, Acacia, sodium alginate, and pectin, on the unconfined compressive strength (UCS) of dune sand. The results showed that the UCS increased with biopolymer concentration and curing intervals, and the presence of biopolymers significantly contributed to the strength.
Article
Green & Sustainable Science & Technology
Alexey N. Beskopylny, Sergey A. Stel'makh, Evgenii M. Shcherban', Levon R. Mailyan, Besarion Meskhi, Diana El'shaeva, Valery Varavka
Summary: The study aimed to obtain geopolymer fine-grained concrete with improved quality characteristics, with the most effective activator composition found to be NaOH and Na2SiO3. Polynomial equations were obtained showing the dependence of the change in strength characteristics of geopolymer concrete, with a significant effect of the alkaline activator composition noted on the strength characteristics.
Article
Chemistry, Physical
Tohoue Monique Tognonvi, Svetlana Petlitckaia, Ameni Gharzouni, Myriam Fricheteau, Nathalie Texier-Mandoki, Xavier Bourbon, Sylvie Rossignol
CLAYS AND CLAY MINERALS
(2020)
Article
Materials Science, Ceramics
Petlitckaia Svetlana, Gharzouni Ameni, Tognonvi Tohoue Monique, Texier-Mandoki Nathalie, Bourbon Xavier, Rossignol Sylvie
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2020)
Article
Materials Science, Ceramics
Sandrine Gomes, Elodie Petit, Lawrence Frezet, Rodolphe Thirouard, Christine Taviot-Gueho, Ameni Gharzouni, Sylvie Rossignol, Guillaume Renaudin
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2020)
Article
Thermodynamics
Epiphanie Nouemsi Soubgui, Rufin Theophile Tene Fongang, Elie Kamseu, Rene Oum Lissouck, Fernanda Andreola, Likiby Boubakar, Sylvie Rossignol, Cristina Leonelli
Summary: The study investigated the influence of drying on the microstructure, physical and chemical properties of tropical wood species. Different species showed variations in pore volume, density, lignin content and thermal stability. Lightwoods displayed higher porosity and lower thermal stability compared to dense woods, indicating potential for ecological and sustainable wood transformation policies.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Materials Science, Multidisciplinary
V. Mathivet, J. Jouin, M. Parlier, S. Rossignol
Summary: The study focuses on the synthesis of geopolymers from metakaolin and phosphoric acid with varying [P] concentration and the addition of water to improve the viscosity for complex shapes. Measurements of viscosity, density, and consolidation times, as well as studies on microstructure and mechanical properties were conducted to assess the influence of water content on the material's structure. The results showed that the addition of water led to the formation of new amorphous networks in the geopolymers, impacting their properties.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Construction & Building Technology
Julien Archez, Remi Farges, Ameni Gharzouni, Sylvie Rossignol
Summary: The study investigated the shrinkage of geopolymer materials, showing that alkaline solution plays a key role in controlling shrinkage. Additives were found to reduce shrinkage, with normalized sand having the highest impact. The increase of liquid to solid ratio was proven to correlate with the increase of shrinkage.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Svetlana Petlitckaia, Ameni Gharzouni, Eloise Hyvernaud, Nathalie Texier-Mandoki, Xavier Bourbon, Sylvie Rossignol
Summary: The study examines the impact of carbonate content on the thermal behavior of geopolymers by calcining various mixtures at different temperatures. By controlling the available alkaline earth cations, it is possible to predict the shrinkage of geopolymer materials during thermal treatment. Different calcium and magnesium silicates can be formed based on the composition of the mixtures, resulting in varying shrinkage values.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Ceramics
J. Archez, A. Gharzouni, I. Sobrados, A. Piancastelli, J. F. Caron, N. Texier-Mandoki, X. Bourbon, S. Rossignol
Summary: The study evaluated the structural evolution of geopolymer under different temperatures and times for nuclear waste disposal. Results showed changes in density and mechanical strength over time at both 20 and 90 degrees C, with stability in structure at 20 degrees C and nucleation of zeolite type phase at 90 degrees C. Mesoporosity increased over time, while higher temperatures led to increased porosity and pore size due to pore coalescence and water removal.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Ceramics
Kosuke Nishikawa, Keitaro Yamaguchi, Tomotaka Suzuki, Shinobu Hashimoto, Sylvie Rossignol
Summary: This study investigates the effects of adding silica fume on the densification and mechanical properties of geopolymers using the warm press method. The results show that adding an appropriate amount of silica fume can enhance the compressive strength of geopolymers, but an excessive amount can lead to a decrease in strength.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Kosuke Nishikawa, Shinobu Hashimoto, Sylvie Rossignol
Summary: In this study, a novel cold reaction sintering method using a warm-pressing device was used to harden boron carbide (B4C) with an inorganic binder, namely a geopolymer binder. The research found that when appropriate pressure was applied to the raw materials, the geopolymer binder was completely geopolymerized and formed a strong hardened body. The compressive strength of the hardened body exceeded 50 MPa under certain conditions.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Nouping Fekoua Joelle Nadia, Ameni Gharzouni, Benoit Nait-Ali, Lila Ouamara, Ibrahim Mbouombouo Ndassa, Gouet Bebga, Kamseu Elie, Sylvie Rossignol
Summary: The valorization of local materials in public building construction in emerging countries, such as laterite in Cameroon, is crucial for sustainable development. This study investigates the feasibility and characterization of geopolymer foams based on laterite or a model mixture (metakaolin-hematite) under drastic conditions like fire and freeze-thaw cycles. The results show that these materials have low thermal conductivity and good insulation properties, making them suitable for usage in construction.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
W. N'cho, A. Gharzouni, J. Jouin, A. Aimable, I. Sobrados, S. Rossignol
Summary: This study evaluated the evolution of physico-chemical properties by mixing different metakaolins. The properties of the mixtures were expressed as a function of different parameters, where granulometric properties depended on the quantity of each source, wettability was related to the amount of available amorphous aluminum, and zeta potential was influenced by the source with the highest amount of siliceous-based impurities. This approach can be applied to geopolymer synthesis.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Paolo Scanferla, Ameni Gharzouni, Nathalie Texier-Mandoki, Xavier Bourbon, Isabel Sobrados de la Plaza, Sylvie Rossignol
Summary: This study aims to demonstrate the differences between two series of metakaolin-based geopolymers obtained from silicate solutions with different potassium concentrations (5 and 6 mol/L). The differences between the two solutions were identified by performing various spectroscopic analysis. The reactivity of the solution was found to depend on its degree of condensation, and the characteristics of the geopolymer were influenced by the composition of the silicate solution.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
W. C. N'cho, A. Gharzouni, J. Jouin, S. Rossignol
Summary: This study evaluated the impact of different metakaolin mixtures on geopolymer formation and properties. The results showed that aluminum concentration affected the setting time and oligomer formation energy. Regardless of the formulation, the trends in mechanical strength and porosity were similar. Network characteristics were assessed by amorphous material content and in situ infrared spectroscopy analysis.
Article
Construction & Building Technology
Paolo Scanferla, Claudio Finocchiaro, Ameni Gharzouni, Germana Barone, Paolo Mazzoleni, Sylvie Rossignol
Summary: This study tested the thermal performances of volcanic ash-based alkali-activated materials at 1000 degrees C using sodium or potassium solutions. After confirming the feasibility of the potassium set, a multidisciplinary characterization was conducted, including spectroscopic, thermal, mechanical, diffractometric, and dilatometric analyses. The formation kinetics of different networks were evaluated. The results demonstrated a correlation between high mechanical properties and lower water content in non-treated samples. Treated samples at 1000 degrees C exhibited higher compressive strengths due to the crystallization of wollastonite, leucite, and nepheline. Additionally, the thermal stability was observed to increase with higher solid content in potassium-based formulations.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Ceramics
Deniz Bozoglu, Sahin Yakut, Kemal Ulutas, Deniz Deger
Summary: Thin film polyethylene oxide, produced by the thermal evaporation technique, exhibits structural and property differences compared to bulk polyethylene oxide. The dielectric constant of polyethylene oxide thin film is 10 times greater than that of bulk polyethylene oxide. There is consistency among dielectric constants, activation energies, and free volume fractions for both thin film and bulk samples. Polyethylene oxide thin film is observed to be more brittle than bulk polyethylene oxide.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Xiaozhen Fan, Zhuo Wang, Zheng Fang, Huiqun Ye, Jinju Zheng, Jianqiang Zhang, Yanjun Qin, Yao Zhai, Yanlong Miao, Zixiang Zhao, Can Yang, Jiajun He, Zhenghang Wei, Yunzhang Fang
Summary: The microscopic strain evolution and microstructural of FeCuNbSiB amorphous alloy samples were studied under both free and tensile stress annealing conditions. It was found that an amorphous-nanocrystalline structure was developed in both samples after annealing at 813 K, and the size of nanocrystals was limited by the applied stress.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Atsushi Tanaka, Atsuki Saito, Takashi Murata, Ayako Nakata, Tsuyoshi Miyazaki
Summary: Although molecular dynamics (MD) simulation is a powerful tool for investigating the atomic-scale structures of complex materials, its reliable and accurate application to multi-component glass systems faces challenges due to limited force fields (FFs) and the complexity of chemical environments. This study demonstrates the feasibility of efficient and accurate large-scale density functional theory (DFT) calculations for multi-component glass systems. The evaluation of classical FFs based on the results of large-scale DFT calculations reveals low accuracy for non-bridging oxygen atoms, and differences in Si-O-Si angle distribution and electronic structure for X = Mg.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Petr Shvets, Ksenia Maksimova, Aleksandr Goikhman
Summary: In this study, vanadium oxide xerogel samples were successfully synthesized through a liquid phase reaction and the interaction of films with water. The samples were thoroughly analyzed using X-ray diffraction and Raman spectroscopy, revealing the existence of two distinct phases. It was also discovered that previous misinterpretations regarding the high-pressure polymorph structure were due to the formation of a high-temperature phase. These findings highlight the potential for further refining and expanding the current structural models of vanadium oxide xerogel in future research efforts.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Yiran Zhang, Jing Pang, Qingchun Xiang, Dong Yang, Yinglei Ren, Xiaoyu Li, Keqiang Qiu
Summary: The effect of the volume fraction of body-centered cubic (BCC) crystal on the room temperature brittleness of Fe-based amorphous nanocrystalline alloys was investigated. Molecular dynamics simulations were conducted to obtain seven model samples with different embedded BCC nanocrystal contents. The results showed a gradient decrease in the plasticity of the alloys with different nanocrystal contents.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Moustafa Sahnoune Chaouche, Hani K. Al-Mohair, Shavan Askar, Barno Sayfutdinovna Abdullaeva, Naseer Ali Hussien, Ahmed Hussien Alawadi
Summary: In this work, a novel micromechanical data-driven machine learning framework was proposed to characterize material parameters in bulk metallic glasses. The framework utilized nanoindentation simulations with Berkovich and spherical tips to compile a vast collection of data on material behavior in BMGs. The developed machine learning model efficiently predicted critical material properties and highlighted the importance of input feature weight functions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Louisiane Verger, Vinuyan Ganesaratnam, Virginie Nazabal, Sebastien Chenu, Christophe Calers, David Le Coq, Laurent Calvez, Olivier Hernandez, Xiang-Hua Zhang
Summary: Crystallization in Ga, Sb, and Se glasses was studied, and a correlation between Se content, crystalline phases, and electrical conductivity was observed. The resulting glass-ceramics exhibited significantly higher conductivity compared to other Se-based glass-ceramics.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Seong-Sik Shin, Ga-Yeong Kim, Byeonggwan Lee, Jae-Hwan Yang, Yeon-Su Son, Jung-Hoon Choi, Jae-Young Pyo, Ki Rak Lee, Hwan-Seo Park, Hyun Woo Kang
Summary: In this study, silver tungstate-tellurite glass with different loading of AgI was developed for immobilization of radioactive iodine. The effects of increasing the amount of AgI on the glass matrix were investigated. The leaching properties of all samples were evaluated, and it was found that the release of all elements satisfied the US regulation.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Chunghee Nam
Summary: This study demonstrates the prediction performance of a CNN regression model for the magnetic entropy changes and transition temperatures of bulk metallic glasses with magnetocaloric effects. The model achieved high prediction performance, as measured by the determination coefficient and root mean square error. The results showed good agreement with experimental values and reported results.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
A. Hosny, Y. M. Moustafa, G. El-Damrawi
Summary: In this study, crystalline glass ceramics were obtained directly from glasses using an ion exchange process between lead bromide and oxygen ions. The addition of lead bromide caused significant changes in the glass structure and the formation of specific crystalline phases.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Luana Cristina Feitosa Alves, Jheimison Ferreira Gomes, Natacya Fontes Dantas, Maria Nayane Queiroz, Pablo Nabuco Portes, Francielle Sato, Nilma de Souza Fernandes, Karina Miyuki, Celso Vataru Nakamura, Alysson Steimacher, Franciana Pedrochi
Summary: This study evaluated the influence of CaF2 addition on the bioactivity of the samples. The results showed that the samples exhibited good bioactivity and cytocompatibility, making them suitable for biomedical applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
N. Keninger, S. Feller
Summary: The principles of Topological Constraint Theory (TCT) were used to study alkali borate and silicate glass systems. Structural models were developed based on experimental data and used to predict properties of the glass.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Hao Wang, Chengliang Zhao, Chuntao Chang, Shengli Zhu, Zhankui Zhao
Summary: The relationship between the heterogeneous structure and structural relaxation in metallic glasses was explored by investigating the quasielastic and viscoelastic behavior of a Zr55Cu30Ni5Al10 metallic glass. Stress-annealing treatment was used to retain elastic strain energy, and a unique creep recovery phenomenon was observed during the reheating process. The Maxwell model was employed to qualitatively describe the mechanisms of elastic strain energy retention and release.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Sihyung Lee, Giyeol Han, Karuppasamy Pandian Marimuthu, Hyungyil Lee
Summary: This study presents a method for extracting FVM parameters of Zr-based TFMG using MD and FEA, and validates the method through simulation and experiments.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Nedra Saad, Mohamed Haouari, Mayssa Ibrahim, Noura Amamou
Summary: In this work, we investigated the optical properties of a fluorophosphate glass system doped with Tb3+ and Eu3+ ions. We found that the emitted light can be tuned by changing the doping concentration, excitation wavelength, or excitation power, which is important for the design of solid-state lighting sources.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
