Results 21 to 30 of about 60,085 (278)

A comparative study of experimental configurations in synchrotron pair distribution function [PDF]

open access: yes, 2019
The identification and quantification of amorphous components and nanocrystalline phases with very small crystal sizes, smaller than ~3 nm, within samples containing crystalline phases is very challenging.
Ana Cuesta   +12 more
core   +2 more sources

Comparative evaluation of shear bond strength and microleakage of tricalcium silicate-based restorative material and radioopaque posterior glass ionomer restorative cement in primary and permanent teeth: An in vitro study

open access: yesJournal of Indian Society of Pedodontics and Preventive Dentistry, 2014
Background: Restoration of carious primary molars is still a major concern while treating the young children that too in deep carious lesion which extends below the cemento-enamel junction (CEJ) where pulp protection and achieving adequate marginal seal ...
Vignesh Guptha Raju   +5 more
doaj   +1 more source

A Review: Progress in Molecular Dynamics Simulation of Portland Cement (Geopolymer)—Based Composites and the Interface between These Matrices and Reinforced Material

open access: yesBuildings, 2023
Molecular dynamics (MD) is an important method for studying the molecular and atomic scale of cement (geopolymer)-based composites which provides an effective method for the optimal design of cementitious materials.
Li Li   +5 more
doaj   +1 more source

Stabilization of Cr(III) wastes by C3S and C3S hydrated matrix : comparison of two incorporation methods [PDF]

open access: yes, 2015
In the present study, the influence of Cr(III) on the properties of C3S and its stabilization in C3S hydrates was investigated by either direct incorporation as Cr2O3 during C3S preparation or introduced as nitrate salt during hydration.
De Schutter, Geert   +3 more
core   +1 more source

Encapsulation of Cs/Sr contaminated clinoptilolite in geopolymers produced from metakaolin [PDF]

open access: yes, 2015
The encapsulation of caesium (Cs) and strontium (Sr) contaminated clinoptilolite in Na and K based metakaolin geopolymers is reported. When Cs or Sr loaded clinoptilolite is mixed with a metakaolin geopolymer paste, the high pH of the activating solution
Bensted, J   +6 more
core   +1 more source

Comparative Study of Soil Grouting with Cement Slurry and Cement-Sodium Silicate Slurry

open access: yesAdvances in Materials Science and Engineering, 2018
Cement slurry and cement-sodium silicate slurry are most widely applied for soil grouting reinforcement project. The viscosity change of cement slurry is negligible during grouting period and presumed to be time independent, while the viscosity of cement-
Mingting Zhu   +3 more
doaj   +1 more source

Experimental study of water-soluble vegetable gum-modified cement-sodium silicate plugging materials

open access: yesYantu gongcheng xuebao, 2020
Karst areas are well developed in Southwest China, and karst hydrodynamic disasters have a great impact on underground engineering construction. In order to solve the problems of low slurry retention rate of cement-sodium silicate plugging materials, the
LI Zhao-feng , GAO Yi-fan , ZHANG Jian , QI Yan-hai , WANG Yan-sheng , LIU Chao
doaj   +1 more source

Preparation and Properties of Double Liquid Grouting Materials (DLGMs) Used for the Regenerated Roof of a Coal Mine

open access: yesBuildings, 2023
Double liquid grouting materials (DLGMs) are composed of slurry A and slurry B. In response to the need for sustainable development, there is currently a focus on improving the utilization rate of resources. In this paper, industrial solid waste fly ash,
Aiguo Wang   +8 more
doaj   +1 more source

Raman spectroscopic study of the mineral xonotlite Ca6Si6O17(OH)2 - A component of plaster boards [PDF]

open access: yes, 2012
The mineral xonotlite Ca 6Si 6O 17(OH) 2 is a crystalline calcium silicate hydrate which is widely used in plaster boards and in many industrial applications. The structure of xonotlite is best described as having a dreierdoppelketten silicate structure,
Frost, Ray   +3 more
core   +2 more sources

Direct pulp capping of primary molars using a novel fast-setting calcium silicate cement: a randomized clinical trial with 12-month follow-up

open access: yesBiomaterial Investigations in Dentistry, 2019
Objective: Novel fast-setting calcium silicate cement with fluoride (Protooth) has been developed for potential applications in tooth crowns. The aim of this study was to evaluate the success rate of direct pulp capping in primary molars using two-layer ...
Ali Vafaei   +4 more
doaj   +1 more source

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