Article
Engineering, Environmental
Savani Vidana Pathiranagei, Ivan Gratchev
Summary: The study investigates the effect of high temperatures on the engineering properties of sandstone. Temperatures ranging from 200-400 degrees C are found to decrease porosity and increase rock strength, while temperatures above 600 degrees C result in a significant increase in porosity and decrease in strength. These changes are attributed to alterations in rock mineralogy and microstructure.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)
Article
Polymer Science
Raja Soma Sundaram Pillai, Rajesh Rajamoni, Indran Suyambulingam, Isaac Rajamony Suthies Goldy, Divya Divakaran
Summary: The research focuses on using agricultural waste like Cymbopogon flexuosus plant shoot as reinforcement in biocomposites due to its abundance and eco-friendly nature. Carbonized CFPS is rich in SiO2 and hard ceramic particles, making it a feasible reinforcement option. Non-carbonized CFPS, on the other hand, has a semi-crystalline nature and can serve as a filler or substitute for silica-based inorganic fillers.
Article
Materials Science, Multidisciplinary
Zaka Ullah, Javed Rehman, Faheem Ur Rehman, Shagufta Gulbadan, Muhammad Adil Mahmood, Muhammad Azhar Khan
Summary: Perovskite type Ba1-xSrxZr0.2Ti0.8O3 ceramics were synthesized using a conventional solid-state reaction method, and their structure and properties were characterized. The results showed that the Ba1-xSrxTi0.8Zr0.2O3 composition does not transform from normal ferroelectric to relaxor ferroelectric in the current range. Diffusivity increases with increasing Sr concentration, while the transition temperature decreases.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Mining & Mineral Processing
Debashis Das, Brijes Mishra, Neel Gupta
Summary: This study investigated the strength variation of shale specimens with different sizes and found that grain size, quartz content, and clay content play crucial roles in affecting the strength of the specimens. The results showed that the 508-mm specimen had the lowest strength, with lower quartz content and higher clay content and grain size compared to the other two sizes.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Arslan Ashfaq, Rasmiah S. Almufarij, Islam Ragab, Yasir Ali, Lamiaa G. Alharbe, Elsammani Ali Shokralla, S. M. Alghamdi, Emaan Alsubhe, Ohood Albeydani, Romulo R. Macadangdang Jr, Adnan Ali
Summary: The thermoelectric material BiAgSe2 is a strong candidate for energy conversion due to its low thermal conductivity. Through phase transition, grain refinement, and post-selenization treatment, the material's Seebeck coefficient and electrical conductivity can be improved, enhancing its thermoelectric performance.
Article
Construction & Building Technology
Shengang Li, Chaozhe Zhang, Tianbiao Zhang, Wentao Li, Pengjiao Jia
Summary: The study found that cement improved the strength of saline soil, while micro-silica helped increase its frost-thaw cycle durability. Saline soil treated with a cement-micro-silica (CMS) binder showed the best performance, with higher compressive strength and lower collapsibility coefficient.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
F. A. Ibrahim, M. H. Habib
Summary: The study created silver vanadate nanosheets using the sol-gel process and found their uniform size distribution and superior electrochromic characteristics. The addition of silver enhanced the crystallinity of V2O5 and improved the compositions' performance, making them suitable for manufacturing electronic devices.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Inorganic & Nuclear
D. Gyasi-Antwi, A. O. Boansi, D. Dodoo-Arhin, Aladin Ullrich
Summary: Water hyacinth is a problem in rivers in Ghana and around the world. Current methods to remove these invasive plants have been unsuccessful, so researchers are exploring the possibility of using them for economic benefit. In this study, Copper-Water Hyacinth nanocomposite was synthesized using a chemical reduction method, and further research is being done to develop a water filter using this material. The nanocomposite was characterized and found to have similar mechanical and electrical properties to other composites.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Muhammad Danish, Alia Ashraf, Zeshan Ali Sandhu, Muhammad Asam Raza, Ali Haider Bhalli, Abdullah G. Al-Sehemi
Summary: Nanocomposites of various metal sulfides were synthesized using a soft template method and characterized for their spectral, morphological, and electrochemical properties. The results showed that these composites exhibited desirable properties for potential energy storage applications.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Physical
Iztok Naglic, Blaz Leskovar, Zoran Samardzija, Bostjan Markoli
Summary: This study investigated the influence of gallium addition on the phases formed in Al-Mn alloys during casting, revealing that an increase in gallium content led to the formation of IQCs and DQCs in the alloys. Microanalysis showed that IQCs contained more gallium and less manganese compared to DQCs.
Article
Chemistry, Physical
Shunchun Deng, Lang Liu, Pan Yang, Caixin Zhang, Yin Lv, Lei Xie
Summary: With the increase in global demand for lithium resources, the emissions of spodumene tailings, a waste product of extracting lithium from spodumene, are also increasing. This study investigates the influence of tailings-cement ratios (TCR) and solid mass concentration (SC) on the mechanical properties, hydration characteristics, and microstructure of early cemented tailings backfill (CSTB). The findings show that TCR and SC have significant effects on the compressive strength, hydration characteristics, and microstructure of CSTB. The addition of spodumene tailings reduces sulfate ion concentration and alters the hydration exotherm of CSTB. Increasing TCR or decreasing SC enhances the compactness and strength of CSTB. These results provide crucial insights for the mix design of underground backfill spodumene tailings.
Article
Construction & Building Technology
Xiaogang Wu, Jianhui Yang, Haixiao Lin, Qinting Wang, Zhengzheng Cao
Summary: The study found that the spalling characteristics of lightweight shale ceramsite concrete (LWSCC) at high temperatures are closely related to its water content. The axial compressive strength of LWSCC decreases linearly with increasing target temperature, but it has a higher resistance to high-temperature deterioration compared to normal weight concrete. Dry LWSCC has a low probability of spalling even at high temperatures. These findings provide a basis for designing LWSCC with high-temperature resistance and evaluating the safety of LWSCC buildings after fires.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Sufyan Azam, Shadi Munshi, Mohamed K. Hassan, Alex Fragoso
Summary: Electrical boards, made up of copper films bonded to fiber epoxy laminates, are the foundation of most electronic devices. This study investigated the effects of vibration on the electrical properties of these boards and found significant changes in resistance and conductivity after a high number of vibration cycles, indicating potential electrical failures caused by mechanical stresses.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
I. P. Studenyak, A. Pogodin, V. Studenyak, O. P. Kokhan, Yu M. Azhniuk, D. Solonenko, L. Daroczi, S. Kokenyesi, D. R. T. Zahn
Summary: Sodium halogenthiophosphates Na6PS5Br and Na6PS5Cl, as well as halogen-free Na7PS6, were synthesized using a two-step technique. The crystal structure was confirmed through X-ray diffraction and Raman spectroscopy, showing similarities to chemically related compounds. The electrical conductivity of the synthesized compounds was found to be predominantly ionic.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Materials Science, Textiles
P. Sivaranjana, E. R. Nagarajan, N. Rajini, Nadir Ayrilmis, A. Varada Rajulu, Suchart Siengchin
Summary: By utilizing Cassia alata leaf extract as a reducing agent, eco-friendly nanocomposites containing silver nanoparticles were developed, showing significant antibacterial activity against Escherichia coli and potential for wound dressing and biomedical applications.
JOURNAL OF INDUSTRIAL TEXTILES
(2021)