Results 71 to 80 of about 14,253 (226)
Reduction of water content in calcium aluminate cement with/out phosphate modification for alternative cementation technique [PDF]
, 2018 Cementation of the secondary aqueous wastes from TEPCO Fukushima Daiichi Nuclear Power Plant is challenging due to the significant strontium content and radioactivity, leading to a potential risk of hydrogen gas generation via radiolysis of water content.
Garcia-Lodeiro, I. +4 more
core +1 more source
Contact point geometry governs structural buildup at rest in Portland cement–limestone blends
Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.Abstract The early stiffening of fresh cement paste plays a key role in shaping and stability during casting and 3D printing. In Portland cement systems, this phenomenon arises from the formation of calcium–silicate–hydrate (C-S-H$\text{C-S-H}$), which stiffens grain‐to‐grain contacts.
Luca Michel +4 more
wiley +1 more source
Modifying admixtures to cement compositions produced from local raw materials
MATEC Web of Conferences, 2018 Durability of hardened cement paste depends on chemical and mineralogical composition of Portland cement. The main factor for hardened cement paste is higher content of calcium aluminate and free calcium hydroxide, binding of which into water-insoluble ...
Vasileva Daria +3 more
doaj +2 more sources
Case Studies in Construction MaterialsThis study examines the changes in the micro- and nano-structures of microwave-cured cement and slag pastes over 7 years. The properties of aged samples were compared with those of young pastes made from the same mixtures.
Dong Li +4 more
doaj +1 more source
Synchrotron x-ray pair distribution function: A tool to characterize cement gels [PDF]
, 2018 Cement matrices contain large amounts of crystalline phases jointly with amorphous and/or nanocrystalline phases. Consequently, their analyses are very challenging.
Cuesta-Garcia, Ana Maria +5 more
core
Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.Abstract Silicate dissolution under hyperalkaline conditions is a key process that affects the evolution of alkali–silica reaction (ASR) in concrete. In these environments, dissolution may involve multiple overlapping processes—including ion adsorption on reactive sites, transport of dissolved species, and the formation of alteration layers.
Rui Xiao +4 more
wiley +1 more source
Journal of Taibah University for Science, 2021 In the context of the microstructure of nano-SiO2 cement nanocomposites, information regarding the tricalcium silicate (C3S) and dicalcium silicate (C2S) phases during the hydration reaction remains inadequate. Therefore, in this research, the effects of
A. Hakamy
doaj +1 more source
Structure, Atomistic Simulations, and Phase Transition of Stoichiometric Yeelimite [PDF]
, 2013 : Yeelimite, Ca4[Al6O12]SO4, is outstanding as an aluminate sodalite, being the framework of these type of materials flexible and dependent on ion sizes and anion ordering/disordering.
Ayuela, Andres +7 more
core
Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.• A novel low‐cost SQB was synthesized and optimized for CSTB. • The synergistic hydration mechanism of sulfate‐activated LS with alkali–sulfate‐activated GGBFS in SQB was revealed. • The SQB has effectively consolidated ST, which have significant potential for both environmental and economic benefits.
Faguang Yang +10 more
wiley +1 more source
Applied SciencesThe combined effect and corresponding mechanism of nano calcium carbonate (NC) and aluminum sulfate (AS) on the setting and hardening performance of binary blended cement (ordinary Portland cement (OPC) and calcium sulfoaluminate cement (CSA)) were ...
Huanhuan Li +6 more
doaj +1 more source