Results 101 to 110 of about 756,097 (272)
Cleaner Engineering and TechnologyThe effect of multiple mix design factors on the properties of ladle slag-fly ash alkali-activated composites was investigated. Taguchi-TOPSIS hybrid algorithm was adopted to optimize mix design parameters, including ladle slag replacement by fly ash ...
Omar Najm, Hilal El-Hassan, Amr El-Dieb
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Effect of CaCO3 nanoparticles on the microstructure and fracture toughness of ceramic nanocomposites
Journal of Taibah University for Science, 2020 This study investigated the effect of using calcium carbonate (CaCO3) nanoparticles on the microstructural properties, flexural strength and fracture toughness of ceramic nanomaterials.
A. Hakamy
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Shape-controlled cement hydrate synthesis and self-assembly
, 2019 In some embodiments, the present disclosure pertains to methods of forming calcium-silicate-hydrate particles by mixing a calcium source with a silicate source. In some embodiments, the mixing comprises sonication.
Shahsavari, Rouzbeh +2 more
core
Solvation Engineering with 2D Laponite Nanosheets for Stable Aqueous Zinc‐Ion Batteries
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.In this work, ZBL was introduced as an electrolyte additive to the ZnSO4 electrolyte to achieve more uniform Zn plating/stripping and reduce side reactions, thereby improving the reversibility of Zn anodes. This leads to enhanced cycling stability in both symmetric and full cells.
Junlun Cao +7 more
wiley +1 more source
Strength reduction mechanism of cement-treated soil under seawater environment
Soils and FoundationsImproving soft grounds with cement or lime is commonly used to increase their strength and deformation characteristics. However, the properties of cement/lime-treated soil deteriorate in seawater because magnesium salts accelerate calcium leaching.
Hiroyuki Hara +2 more
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Effects of nanosilica on the calcium silicate hydrates in Portland cement–fly ash systems [PDF]
, 2015 Cementitious materials have a complex chemistry and naturally form nanostructures in the hydration process, a network of calcium silicate hydrates. It is considered that nanoparticles such as nanosilica could act as a pozzolanic material as well as a ...
Papatzani, Styliani; id_orcid +2 more
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Geological Journal, EarlyView.Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos +6 more
wiley +1 more source
How much water is there within calcium silicate hydrates? Probing water dynamics by Inelastic Neutron Scattering and Molecular Dynamics Simulations [PDF]
Calcium silicate hydrate (C-S-H) is a disordered, nanocrystalline material acting as the primary binding phase in Portland cement. Thin films of water are present on the surfaces and inside the nanopores of C-S-H and related phases such as calcium ...
Valérie , Magnin +15 more
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Journal of Quaternary Science, EarlyView.ABSTRACT Volcanic ash (tephra) provides an important chronostratigraphic framework for correlating Quaternary records. In ultra‐distal ( > $\gt $1500 km) settings such as ice cores and marine sediments, deposits are typically preserved as cryptotephra composed of glass shards ≤ 20 μ $\le 20\,\mu
Celeste Smith +6 more
wiley +1 more source
Synthetic Calcium Silicate Hydrates
, 2017 Since the introduction of cementitious materials over 200 years ago, its use has multiplied many fold to be currently at 3 billion tonnes per year, accounting for about 8% of worldwide carbon emission which is forecast to double within the next 30 years. Upon hydration of cementitious materials, the principle product formed is Calcium Silicate Hydrate (
openaire +2 more sources