Results 71 to 80 of about 387,480 (278)
Kinetics of the Aqueous‐Phase Copolymerization of AA and HPEG Macromonomer in Acidic Media
Macromolecular Reaction Engineering, Volume 19, Issue 1, February 2025.A series of aqueous semibatch AA‐HPEG copolymerization experiments are studied in acidic media and the effect of different operation conditions on the kinetics of the copolymerization, and the molar mass are investigated. On the other hand, the accuracy of three different methods for measuring the individual monomer conversions and the HPEG cumulative ...
Kevin Palma‐Lemus +4 more
wiley +1 more source
Liquid-Solid Phase Transition Alloy as Reversible and Rapid Molding Bone Cement [PDF]
arXiv, 2013 Bone cement has been demonstrated as an essential restorative material in the orthopedic surgery. However current materials often imply unavoidable drawbacks, such as tissue-cement reaction induced thermal injuries and troublesome revision procedure.
arxiv
Cementron: Machine Learning the Constituent Phases in Cement Clinker from Optical Images [PDF]
arXiv, 2022 Cement is the most used construction material. The performance of cement hydrate depends on the constituent phases, viz. alite, belite, aluminate, and ferrites present in the cement clinker, both qualitatively and quantitatively. Traditionally, clinker phases are analyzed from optical images relying on a domain expert and simple image processing ...
arxiv
Structural Concrete, Volume 26, Issue 1, Page 212-235, February 2025.Abstract This paper focuses on the applicability of CatBoost models constructed using various optimization techniques for improved forecasting the compressive strength of ultra‐high‐performance concrete (UHPC). Phasor particle swarm optimization (PPSO), dwarf mongoose optimization (DMO), and atom search optimization (ASO), which have been very popular ...
Metin Katlav, Faruk Ergen
wiley +1 more source
Hierarchical meta-modelling of stone injected with CNT/cement mortar [PDF]
arXiv, 2023 This paper presents an innovative hierarchical meta-modelling approach for predicting the effective elastic properties of stone injected with composite cement grouts containing Carbon NanoTubes (CNTs) for structural rehabilitation purposes. The study first addresses the homogenization of the nano- and micro-scales through numerical representative ...
arxiv
Advanced Science, Volume 12, Issue 4, January 27, 2025.This study introduces a novel popcorn‐inspired strategy for self‐propagating expandable graphite‐based conductive cement composites. Through thermal treatment, the graphite expands and forms new conductive networks, significantly reducing electrical resistance by 60%. This enhancement broadens its application scope in electrical applications, including
Haiping Wu +9 more
wiley +1 more source
Optimal cement paste yield stress for the production of stable cement foams [PDF]
Cement and Concrete Research (2019) 120, pp 142-151, 2019 Production of morphology-controlled cement foams remains challenging, mainly due to bubble stability issues during cement setting. The use of cement paste with high yield stress is expected to promote stability by damping intrinsic bubble kinetics. Here we show however that for given W/C ratio, fresh foam stability can be achieved instead by decreasing
arxiv
The effect of undrained heating on a fluid-saturated hardened cement paste [PDF]
, 2008 The effect of undrained heating on volume change and induced pore pressure increase is an important point to properly understand the behaviour and evaluate the integrity of an oil well cement sheath submitted to rapid temperature changes. This thermal pressurization of the pore fluid is due to the discrepancy between the thermal expansion coefficients ...
arxiv +1 more source
Effect of Polyacrylic Acid on Rheology of Cement Paste Plasticized by Polycarboxylate Superplasticizer [PDF]
Materials, 2018 Viscosity-enhancing agents (VEA) have been widely employed in high flowability cement-based materials, so as to ensure that no bleeding and segregation would occur. However, in most cases, interaction between VEA and superplasticizer would be unavoidable.
Baoguo Ma +4 more
openaire +3 more sources
Pull‐Off Forces on Implant‐Supported Single Restorations by Sticky Food: An In Vitro Study
Clinical Oral Implants Research, Volume 36, Issue 1, Page 40-50, January 2025.ABSTRACT Objective To investigate the pull‐off forces on implant‐supported restorations caused by sticky food, to understand how much retention force cemented restorations must have to withstand chewing forces without unintentional retention loss. The influence of food type, restoration design, and surface treatment were investigated.
Shaza Bishti +3 more
wiley +1 more source