Results 71 to 80 of about 805,927 (209)

Study of hydration of cement pastes added with used catalytic cracking catalyst (FCC) from a colombian refinery

Revista Facultad de Ingeniería Universidad de Antioquia, 2013
This paper analyzes the effect of the incorporation of industrial waste from an oil refinery in Colombia, known as used catalytic cracking catalyst (FCC), in the hydration process of cementitious pastes. For this purpose, ordinary Portland cement pastes
Jenny Johanna Trochez, Janneth Torres Agredo, Ruby Mejía de Gutiérrez   +2 more
doaj   +1 more source

Influence of radiopacifier additives on calcium aluminate cement properties [PDF]

Materials Research, 2014
The aim of this study was to determine the best radiopaque additive to be incorporated to calcium aluminate cement (CAC) to promote radiopacity. Measurements of optical density were carried out on white MTA and CAC with and without additives such as ...
Ivone Regina de Oliveira, Talita Luana de Andrade, Daniele Coelho Matsuo, Renata Martins Parreira, Marcos Jacobovitz, Victor Carlos Pandolfelli   +5 more
doaj   +1 more source

In Situ X‐Ray Diffraction Study of a Microwave‐Based Hydrothermal Synthesis of Mayenite Ca12Al14O33

Zeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 13, 1 September 2026.
Microwave‐assisted hydrothermal synthesis enables rapid transformation of aluminium‐ and calcium‐hydroxide into mayenite with high surface area. Optimised synthesis conditions comprise a microwave step at 80°C for 5 min followed by calcination at 800°C. The reactions during calcination were studied via in situ XRD measurements.
Nils L. Kotschote, Franziska Hupe, Gina‐Lee Pitulle, Stefan G. Ebbinghaus   +3 more
wiley   +1 more source

High temperature behavior of calcium aluminate cement pastes [PDF]

, 2020
: Calcium aluminate cements (CAC) are important materials today, as they cover a good number of applications in civil engineering, refractory industry and materials science, which is mainly due to their excellent high temperature mechanical properties ...
Zapata Mesa, John Fernando
core  

Characterization and separation resistance of an in-situ 2D nanocarbon/calcium aluminate composite synthesized via a combustion method

Journal of Asian Ceramic Societies, 2021
In-situ 2D nanocarbon/calcium aluminate composite (NCAC) was synthesized via a combustion method designed based on aluminothermic reduction using calcium carbonate (CaCO3) as carbon source. The results demonstrate that compared with the pristine product,
Shoulei Yang, Guoqing Xiao, Donghai Ding
doaj   +1 more source

Development of a Nano‐Hybrid Composite Using Bovine Hydroxyapatite and Montmorillonite for Endodontic Applications—An In Vitro Study

International Endodontic Journal, Volume 59, Issue 9, Page 1936-1953, September 2026.
ABSTRACT Aim Hydraulic calcium silicate cements are widely employed in endodontics due to their excellent biocompatibility, bioactivity, sealing ability, and remineralisation potential. However, currently used products such as mineral trioxide aggregate (MTA) exhibit several limitations, including discolouration, cost, and poor handling properties ...
P. A. A. S. Prasad Kumara, Paul R. Cooper, Peter Cathro, Henry F. Duncan, Maree Gould, George Dias, Jithendra Ratnayake   +6 more
wiley   +1 more source

BLENDED CALCIUM ALUMINATE-CALCIUM SULFATE CEMENT-BASED GROUT FOR P-REACTOR VESSEL IN-SITU DECOMMISSIONING [PDF]

, 2011
The objective of this report is to document laboratory testing of blended calcium aluminate - calcium hemihydrate grouts for P-Reactor vessel in-situ decommissioning.
D. Stefanko, C. Langton, Langton, C., Stefanko, D.   +3 more
core   +1 more source

An Updated Classification of Hydraulic Cements Used in Dentistry

International Endodontic Journal, Volume 59, Issue 9, Page 1760-1765, September 2026.
ABSTRACT Mineral trioxide aggregate (MTA) was the first hydraulic cement used in endodontics. It is composed of Portland cement, a binder in concrete, and bismuth oxide to enhance the radiopacity. MTA was introduced in dentistry to be used as a root‐end filling material and also to repair root perforations.
Josette Camilleri
wiley   +1 more source

Chloride Resistance of Portland Cement-Based Mortar Incorporating High Aluminate Cement and Calcium Carbonate

, 2020
Whether chloride resistance is highly influenced by chloride binding capacity remains unknown. In this study, the chloride resistance of Portland cement-based mortar incorporating aluminate cement and calcium carbonate was investigated considering the ...
Seungmin Lim, Hanseung Lee, Yunsu Lee
core   +1 more source

Sustainable Alkali‐Activated Geopolymers From Red Mud and Ferroalloy Residues: Structure and Properties

Journal of the American Ceramic Society, Volume 109, Issue 9, September 2026.
TGA showed general thermal stability with gradual dehydration at T > 200°C. The physical properties changed progressively: apparent density decreased from 2.5 to 2.2 g/cm3 and water absorption reduced from 13% to 7% (90:10 to 70:30), indicating refined pore structures without defect porosity. This dual‐waste synergy advances circular economy principles,
Gulzat Aitkaliyeva, Saltanat Ashimova, Aigul Amitova, Bekbolat Gylymkhanov, Yerik Merkibayev, Marzhan Sarsembayeva, Cesare Oliviero Rossi, Pietro Calandra   +7 more
wiley   +1 more source