Results 51 to 60 of about 217,054 (345)

Comparison of the Thermal Properties of Geopolymer and Modified Gypsum

Polymers, 2021
The paper presents the results of research concerning the influence of micromaterials on the heat conductivity coefficient λ, specifically heat Cp and thermal diffusivity a of modified gypsum and geopolymer.
K. Prałat, Justyna Ciemnicka, A. Koper, K. Buczkowska, Piotr Łoś   +4 more
semanticscholar   +1 more source

Preparation of superfine and semi-hydrated flue gas desulfurization gypsum powder by a superheated steam powdered jet mill and its application to produce cement pastes

Case Studies in Construction Materials, 2022
The low reactivity, high moisture content, and gap-graded particle size distribution of flue gas desulfurization (FGD) gypsum clearly restrict its large-scale application, particularly for cement production.
Zhonghui Xu, Dan Hu, Ran An, Longyuan Lin, Yingling Xiang, Linpei Han, Yunlin Yu, Liping Ning, Jing Wu   +8 more
doaj   +1 more source

Preparation of α-calcium sulfate hemihydrate from industrial by-product gypsum: A review

Physicochemical Problems of Mineral Processing, 2020
In recent years, the massive accumulation of industrial by-product gypsum, especially flue gas desulfurization (FGD) gypsum and phosphogypsum (PG), not only encroaches on lands but also causes serious environmental pollution. The preparation of α-calcium
Qingjun Guan, Ying Sui, Fangming Zhang, Wei-jian Yu, Yongjie Bo, Ping Wang, W. Peng, Ji-Liang Jin   +7 more
semanticscholar   +1 more source

Holistic approach to dissolution kinetics : linking direction-specific microscopic fluxes, local mass transport effects and global macroscopic rates from gypsum etch pit analysis [PDF]

, 2013
Dissolution processes at single crystal surfaces often involve the initial formation and expansion of localized, characteristic (faceted) etch-pits at defects, in an otherwise comparatively unreactive surface.
Abendan, Alonso-Azcárate, Alonso-Azcárate, Arvidson, Bard, Binnig, Blum, Blum, Bosbach, Bosbach, Bosbach, Brantley, Brown, Buchanan, Burns, Burt, Cama, Cama, Chen, Chow, Chow, Christoffersen, Colombani, Colombani, Compton, Compton, Compton, Dove, Engstrom, Fan, Fleischmann, Ford, Forster, Fujiwara, Gasperino, Hall, Hartman, Heinze, Hong, Howell, Jeschke, Jeschke, Jones, Jones, Jordan, Kowacz, Lasaga, Lasaga, Levich, Liu, Lüttge, Lüttge, Lüttge, MacInnis, Macpherson, Macpherson, Macpherson, Macpherson, Martin A. Edwards, Massimo Peruffo, Mbogoro, McGeouch, McGeouch, Michael M. Mbogoro, Morel, Morse, Nancollas, Olhoeft, Orton, Pachon-Rodriguez, Patrick R. Unwin, Peltonen, Ruiz-Agudo, Ruiz-Agudo, Ruiz-Agudo, Sangwal, Schecher, Schofield, Singh, Stumm, Svensson, Tang, Tang, Tang, Taylor, Titiz-Sargut, Unwin, Unwin, Van Driessche, Van Rosmalen, Vanysek, Vavouraki, Wang, White, Wightman, Zhang   +95 more
core   +1 more source

Investigation of the type and content of gypsum on the dimensional stability and mechanical properties of gypsum particleboard [PDF]

Iranian Journal of Wood and Paper Industries, 2014
In this study in order to investigate the effect of gypsum type on the physical and mechanical properties of gypsum Particleboard were used from two type Jebel and Micronize gypsum.
Hossein Rangavar, M.Hassan Payan, Saeid Khojaste   +2 more
doaj  

Hydration Modeling of Calcium Sulphates [PDF]

, 2008
The CEMHYD3D model has been extended at the University of Twente in the last ten years [1,2]. At present the cement hydration model is extended for the use of gypsum.
Brouwers, H.J.H., Korte, A.C.J. de
core   +1 more source

From Waste to Value: Conversion of Calcium Sulfate to Vaterite via Carbon Capture and Storage

Advanced Functional Materials, EarlyView.
This study introduces a new concept for carbon management that relies on the carbonation of industrial gypsum waste and yields phase‐pure vaterite at ambient conditions without any additives. The obtained vaterite is further shown to be a reactive material that develops compressive strength in aqueous suspensions like conventional cements.
Carlos Pimentel, German Montes‐Hernández, Pablo Almarza‐Cifuentes, Matthias Kellermeier, Alexander E.S. Van Driessche   +4 more
wiley   +1 more source

Distinct Behaviors between Gypsum and Silica Scaling in Membrane Distillation.

Environmental Science and Technology, 2019
Mineral scaling constrains membrane distillation (MD) and limits its application in treating hypersaline wastewater. Addressing this challenge requires enhanced fundamental understanding of the scaling phenomenon. However, MD scaling with different types
Kofi S. S. Christie, Yiming Yin, Shihong Lin, Tiezheng Tong   +3 more
semanticscholar   +1 more source

Hydration modelling of Calcium Sulphates [PDF]

, 2008
The CEMHYD3D model has been extended at the University of Twente in last ten years1,2. At present the cement hydration model is extended for the use of gypsum. Although gypsum was present in the model already, the model was not suitable for high contents
Korte, Ariën de
core   +1 more source

Enantioselective Growth of Chiral Serine‐Induced β‐Ag2Se Crystals from an Organoselenium Compound

Advanced Functional Materials, EarlyView.
Chiral amino acids direct the enantioselective crystallization of β‐Ag2Se nanocrystals from an organoselenium precursor. L‐ and D‐serine induce distinct morphologies and opposite homochiral adsorption preferences, transferring molecular handedness into the inorganic lattice.
Matan Oliel, Yarden B. Moshe, Gil Otis, Dana D. Medina, Yitzhak Mastai, Subhomoy Das   +5 more
wiley   +1 more source