Results 31 to 40 of about 900,629 (184)

Cimento aluminoso e seus efeitos em concretos refratários magnesianos espinelizados in situ Calcium aluminate cement and its effects on in-situ spinel containing magnesia refractory castables

Cerâmica, 2010
O uso de concretos refratários alumina-magnésia ligados por cimento aluminoso (CAC) apresenta vantagens decorrentes da presença de espinélio e de CA6 (CaO.6Al2O3), ambas formadas in-situ e acompanhadas de expansão.
D. H Milanez, E. Y Sako, M. F Maia, M. A. L Braulio, L. R. M Bittencourt, V. C Pandolfelli   +5 more
doaj   +1 more source

Comparison of calcium aluminate cements on hydration and strength development at different initial curing regimes

Case Studies in Construction Materials, 2022
This paper examines the influence of CA2 (monocalcium dialuminate, CaAl4O7) in calcium aluminate cement (CAC) on strength development relevant to conversion reaction in the hydration process.
Jae-Min Lee, Hee Jun Yang, Il-Young Jang, Seong Kyum Kim, Dong-Hyuk Jung   +4 more
doaj   +1 more source

Development and Performance Evaluation of Fibrous Pseudoplastic Quaternary Cement Systems for Aerial Additive Manufacturing

Designs, 2023
Aerial additive manufacturing (AAM) represents a paradigm shift in using unmanned aerial vehicles (UAVs, often called ‘drones’) in the construction industry, using self-powered and untethered UAVs to extrude structural cementitious material.
Barrie Dams, Paul Shepherd, Richard J. Ball   +2 more
doaj   +1 more source

Properties of Fine Graded Perlite-Based Lightweight Cement Mortars Subjected to Elevated Temperatures

Buildings, 2023
The present research compared the behaviours of lightweight mortars based on ordinary Portland cement (OPC), calcium sulphoaluminate cement (CSAC), and calcium aluminate cement (CAC) containing expanded perlite and subjected to elevated temperatures. The
Jan Pizoń, Petr Konečný, Miroslav Mynarz, Vlastimil Bílek   +3 more
doaj   +1 more source

Physicochemical properties of a calcium aluminate cement containing nanoparticles of zinc oxide [PDF]

Restorative Dentistry & Endodontics, 2023
ObjectivesThis study evaluated the effect of different nanoparticulated zinc oxide (nano-ZnO) and conventional-ZnO ratios on the physicochemical properties of calcium aluminate cement (CAC).Materials and MethodsThe conventional-ZnO and nano-ZnO were ...
Amanda Freitas da Rosa, Thuany Schmitz Amaral, Maria Eduarda Paz Dotto, Taynara Santos Goulart, Hebert Luís Rossetto, Eduardo Antunes Bortoluzzi, Cleonice da Silveira Teixeira, Lucas da Fonseca Roberti Garcia   +7 more
doaj   +1 more source

A study on the hydration of calcium aluminate cement pastes containing silica fume using non-contact electrical resistivity measurement

Journal of Materials Research and Technology, 2023
In this study, a non-contact electrical resistivity method is employed to investigate the hydration process of calcium aluminate cement (CAC) pastes incorporating silica fume (SF) at an early age. The CAC-SF pastes have a water-to-binder ratio (w/b) of 0.
Yishun Liao, Sichun Wang, Kejin Wang, Siraj Al Qunaynah, Shihui Wan, Zhengxia Yuan, Pengfei Xu, Shengwen Tang   +7 more
doaj   +1 more source

Polymer-stabilized hydrated calcium aluminate cement suspensions as calcium aluminate cement accelerator

Cement
Accelerating calcium aluminate cement (CAC) hydration is usually achieved using lithium salts. However, it is desirable to have alternative high-performance accelerators for CAC-based mortars and concretes. Here, we study the effect of polymer-stabilized
Alper Dönmez, Markus Schönlein, Torben Gädt   +2 more
doaj   +1 more source

Multi-Response Optimization on Hydrated Calcium Aluminate Rich Ternary Binders Using Taguchi Design of Experiments and Principal Component Analysis

Buildings, 2023
This study investigates the influence of various factors on the performance of ternary binders, utilizing statistical approaches. The research focuses on the influence of varying compositions of Portland Cement-Calcium Aluminate Cement-Calcium Sulphate ...
Anxhelina Myftarago, Thomas A. Bier, Elsa Qoku, Ramadan Aliti, Milazim Zogaj   +4 more
doaj   +1 more source

Impact of calcium aluminate cement and calcium sulfate on gel C-A-S-H formation during the Portland cement hydration

Materiales de Construccion
This study examines how calcium aluminate cement (CAC) and calcium sulfate influence the hydration and gel structure of Portland cement (PC). A binary PC/CAC (85/15) mix was compared with ternary systems containing 3% and 5% calcium sulfate under two ...
D. Torrens-Martín, L. Fernández-Carrasco   +1 more
doaj   +1 more source

Calcium Aluminate Cement Blends Containing Bioactive Glass and Strontium for Biomaterial Applications

Materials Research, 2021
In this work blends based on calcium aluminate cement (CAC) containing bioactive glass (BG) (5, 7.5 and 10 wt%) and strontium oxide (1 wt%) were produced aiming improve their bioactivity and the capacity to stimulate the bone regeneration.
A.M. Barbosa, K.W. dos Santos, I. S. Gonçalves, P.M.S.C.M. Leite, A.S. Martorano, G. Grisote, L.M.S. Castro-Raucci, P.T. de Oliveira, L. Raniero, I.R. Oliveira   +9 more
doaj   +1 more source