Results 61 to 70 of about 387,480 (278)

Influence of Sand-Cement Ratio and Polycarboxylate Superplasticizer on the Basic Properties of Mortar Based on Water Film Thickness

open access: yesMaterials, 2021
Previous studies demonstrated that water film thickness (WFT) is a key factor that affects the fluidity of mortar. Changes in the sand-cement (S/C) ratio and polycarboxylate superplasticizer (PCE) dosage will affect the WFT. In this study, several mortar
Zhao Zhang   +6 more
semanticscholar   +1 more source

Enhancing printability of 3D printed concrete by using metakaolin and silica fume

open access: yesStructural Concrete, EarlyView.
Abstract This study investigates the effects of incorporating metakaolin (MK) and silica fume (SF) on the fresh and hardened properties of 3D printed concrete (3DPC). Five mix designs were prepared with MK replacement levels of 0%, 10%, 12.5%, and 15%, along with one mix containing 10% MK and 5% SF.
Marwah M. Thajeel   +2 more
wiley   +1 more source

In vitro evaluation of microleakage of various types of dental cements [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2010
Introduction. Microleakage is defined as the clinically undetectable seepage of oral fluids containing bacteria and debris between cement layer and tooth restoration. Objective.
Medić Vesna   +3 more
doaj   +1 more source

Concretes based on composite cements with the addition of granulated blast furnace slag and cement dust

open access: yesZaštita Materijala, 2023
A set of experimental-statistical models has been obtained that makes it possible to predict the workability and strength of concrete on a composite binder, including the addition of dust from cement clinker kilns and granulated blast-furnace slag, as ...
Leonid Dvorkin, Vadim Zhitkovsky
doaj   +1 more source

Effect of light‐cured pulp capping materials on human dental pulp cells in vitro

open access: yesInternational Endodontic Journal, EarlyView.
Abstract Aim Gold standard as material in vital pulp therapy (VPT) is hydraulic calcium silicate cements (HCSC). To circumvent their prolonged setting time, light‐cured pulp capping materials containing calcium silicate or calcium hydroxide powder are available.
Laurentia Schuster   +3 more
wiley   +1 more source

Modelling and simulation of acrylic bone cement injection and curing within the framework of vertebroplasty [PDF]

open access: yes, 2013
The minimal invasive procedure of vertebroplasty is a surgical technique to treat compression fractures of vertebral bodies. During the treatment, liquid bone cement gets injected into the affected vertebral body and therein cures to a solid. In order to investigate the treatment and the impact of injected bone cement, an integrated modelling and ...
arxiv   +1 more source

Flow loss in superplasticized limestone calcined clay cement

open access: yesJournal of the American Ceramic Society, Volume 108, Issue 5, May 2025.
Abstract This study investigates the mechanisms behind fluidity loss in superplasticized limestone calcined clay cement (LC3), a sustainable alternative to ordinary Portland cement (OPC). Despite its environmental benefits, in presence of superplasticizers, LC3 experiences significant challenges in maintaining workability, an issue of which this paper ...
Sirajuddin Moghul   +2 more
wiley   +1 more source

Investigation on Mechanical Parameters and Microstructure of Soil-Based Controlled Low-Strength Materials with Polycarboxylate Superplasticizer

open access: yesApplied Sciences
This study aims to optimize the sustainable utilization of excavated soil by incorporating it exclusively as a fine aggregate and cement in the formulation of soil-based controlled low-strength materials.
Qianqian Guo   +3 more
doaj   +1 more source

Retention of various luting agents used with implant-supported crowns

open access: yesJournal of Pharmacy and Bioallied Sciences, 2021
Background: Implant supported crowns can either be screw retained or cement retained. Recent advances in implant dentistry has improved the longevity of the implant restoration and has placed importance on esthetics and function.
Santhosh Sathyanarayan   +5 more
doaj   +1 more source

A reaction-diffusion model for the hydration/setting of cement [PDF]

open access: yesPhys. Rev. E 53, (3), 2629-37 (1996)., 1995
We propose a heterogeneous reaction-diffusion model for the hydration and setting of cement. The model is based on diffusional ion transport and on cement specific chemical dissolution/precipitation reactions under spatial heterogeneous solid/liquid conditions.
arxiv   +1 more source

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