Results 61 to 70 of about 530,228 (260)
Materials & Design, 2023 A theoretical model for cement hydration was proposed to study multi-mineral reactive transport processes under various mineral compositions and determine the effect of multi-mineral reactions and interactions on cement hydration kinetics shifting from ...
Yang Liu +5 more
doaj
Characteristics and propierties of oil-well cements additioned with blast furnace slag
Materiales de Construccion, 2011 The present paper addresses the alkali activation of Portland cements containing blast furnace slag (20 and 30% of the cement by weight) with a view to the possible use of these materials in oil well construction.
R. Sánchez, M. Palacios, F. Puertas
doaj +1 more source
Creep in reactive colloidal gels: a nanomechanical study of cement hydrates [PDF]
arXiv, 2020 From soft polymeric gels to hardened cement paste, amorphous solids under constant load exhibit a pronounced time-dependent deformation called creep. The microscopic mechanism of such a phenomenon is poorly understood in amorphous materials and constitutes an even greater challenge in densely packed and chemically reactive granular systems.
arxiv
Speeding up reactive transport simulations in cement systems by surrogate geochemical modeling: deep neural networks and k-nearest neighbors [PDF]
arXiv, 2021 We accelerate reactive transport (RT) simulation by replacing the geochemical solver in the RT code by a surrogate model or emulator, considering either a trained deep neural network (DNN) or a k-nearest neighbor (kNN) regressor. We focus on 2D leaching of hardened cement paste under diffusive or advective-dispersive transport conditions, a solid ...
arxiv
Feasibility of Design One-Part Sodium Silicate Activated Metamontmorillonite-Limestone Cements [PDF]
Iranian Journal of Materials Science and Engineering, 2023 In this study, the potential of calcined montmorillonite as a primary precursor for one-part alkali-activated cement incorporated with high percentage of limestone, is evaluated.
Nailia Rakhimova +3 more
doaj
Controlled growth and ordering of poorly-crystalline calcium-silicate-hydrate nanosheets
Communications Materials, 2021 Calcium-silicate-hydrate is the main component of cement, and controlling its structure is vital to its properties. Here, graphene oxide is used to constrain the growth and optimize the assembly of calcium-silicate-hydrate, substantially improving its ...
Felipe Basquiroto de Souza +4 more
doaj +1 more source
Nanomaterials, 2020 With the continuous research efforts, sophisticated predictive molecular dynamics (MD) models for C-S-H have been developed, and the application of MD simulation has been expanded from fundamental understanding of C-S-H to nano-engineered cement ...
B. Cho, Wonseok Chung, B. Nam
semanticscholar +1 more source
Learning a reactive potential for silica-water through uncertainty attribution [PDF]
arXiv, 2023 The reactivity of silicates in an aqueous solution is relevant to various chemistries ranging from silicate minerals in geology, to the C-S-H phase in cement, nanoporous zeolite catalysts, or highly porous precipitated silica. While simulations of chemical reactions can provide insight at the molecular level, balancing accuracy and scale in reactive ...
arxiv
Effect of Fly Ash Belite Cement on Hydration Performance of Portland Cement
Crystals, 2021 Fly ash belite cement is a green, low carbon cementitious material, mainly composed of hydraulic minerals of dicalcium silicate and calcium aluminate.
Yongfan Gong +3 more
doaj +1 more source
Apatite precipitation on a novel fast-setting calcium silicate cement containing fluoride
Acta Biomaterialia Odontologica Scandinavica, 2016 Aim: Calcium silicate cements are widely used in endodontics. Novel fast-setting calcium silicate cement with fluoride (Protooth) has been developed for potential applications in teeth crowns including cavity lining and cementation.
B. Ranjkesh +5 more
semanticscholar +1 more source