Results 51 to 60 of about 58,047 (299)

Experimental research on the development of geopolymer materials using Romanian local materials [PDF]

Constructii: Journal of Civil Engineering Research, 2018
The demand for concrete and also for the current infrastructure facilities development is experiencing worldwide exponential growth. Environmental issues associated with the production of Portland cement are very well known and therefore they are ...
Adrian LĂZĂRESCU, Henriette SZILÁGYI, Cornelia BAERĂ, Adrian IOANI, Anamaria Cătălina MIRCEA   +4 more
doaj  

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

Advanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa, Lin‐Ding Yuan, Stephen D. Wilson, James M. Rondinelli   +3 more
wiley   +1 more source

Properties of geopolymer binders prepared from milled pond ash [PDF]

, 2017
Alkali-activated materials were prepared from pond ash from the Darkhan city (Mongolia) thermal power station. This ash contains about 60 wt % X-ray amorphous material in addition to quartz, mullite, hematite and magnesioferrite, and presents significant
Bayarzul, U., Kim, D.S., Lee, H.J., Lee, S.-H., MacKenzie, K.J.D., Minjigmaa, A., Ruescher, C.H., Temuujin, J.   +7 more
core   +5 more sources

Binder Chemistry – Low-Calcium Alkali-Activated Materials [PDF]

, 2013
Early developments in the developments of low-calcium (including calcium-free) alkali-activated binders were led by the work of Davidovits in France, as noted in Chap. 2. These materials were initially envisaged as a fire-resistant replacement for organic polymeric materials, with identification of potential applications as a possible binder for ...
Provis, John L., Fernández Jiménez, Ana, KAMSEU, Elie, LEONELLI, Cristina, Palomo, Angel   +4 more
openaire   +2 more sources

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

Advanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Assessment of Chemical Treatment on Hemp Fiber Utilized as Reinforcement in Polymer Composites: Association of Thermal Degradation and Activation Energy of Fiber

Journal of Natural Fibers, 2022
The primary purpose of the research is to improve the surface of hemp fibers chemically. The outcome of different chemical treatments of fibers on their chemical, morphological, physical, and thermal properties has been studied.
Priyanka Soni, Shishir Sinha
doaj   +1 more source

Photon Avalanching Nanoparticles: The Next Generation of Upconverting Nanomaterials?

Advanced Functional Materials, EarlyView.
This Perspective outlines the mechanistic foundations that enable photon‐avalanche (PA) behavior in lanthanide nanomaterials and contrasts them with emerging application spaces and forward‐looking design strategies. By bridging threshold engineering, energy‐transfer dynamics, and materials engineering, we provide a coherent roadmap for advancing the ...
Kimoon Lee, Yunseo Kim, Hyeong‐ku Jo, Dongjoon Yoon, Byeonghyeok Im, WonJeong Yu, Eui‐Rim On, Changhwan Lee   +7 more
wiley   +1 more source

Visualizing alkali metal aggregation-induced coordination in CO2 activation on copper

Nature Communications
Alkali metals are widely recognized as promotors in CO2 activation and conversion. However, how the alkali metals activate CO2 molecules and stabilize the reaction intermediates remains controversial due to the lack of atomic-scale characterization. Here,
Wenyu Sun, Pu Yang, Yongkang Jiang, Jingwei Zhang, Hongrun Zhang, Qingwei Jin, Chen Zhang, Zihao Zhang, Haifeng Feng, Yi Du, Zhichang Wang, Duanyun Cao, Feng Wu, Ying Jiang, Jing Guo   +14 more
doaj   +1 more source

Thermal stability and leaching behavior of alkali-activated slag doped with electric arc furnace dust [PDF]

Science of Sintering
The study presented in this paper explores the simultaneous valorization of electric arc furnace slag (EAFS) and electric arc furnace dust (EAFD) through an alkali activation process, as well as the thermal stability of the resulting product.
Tadić Nebojša, Brašanac-Vukanović Snežana, Nikolić Irena, Radmilović Vuk V., Radmilović Velimir R.   +4 more
doaj   +1 more source

Cost efficiency and resistance to chemical attack of a fly ash geopolymeric mortar versus epoxy resin and acrylic paint coatings [PDF]

, 2017
This article presents results of an experimental investigation on the resistance to chemical attack (with sulphuric, hydrochloric and nitric acid) of several materials: OPC concrete, high-performance concrete, epoxy resin, acrylic painting and a fly ash ...
Abdollahnejad, Zahra, Aguiar, J. L. Barroso de, Mendes, José F. G., Pacheco-Torgal, F., Tahri, W.   +4 more
core   +1 more source