Results 91 to 100 of about 873,531 (208)

The corrosion rate and microstructure of Portland cement and calcium aluminate cement-based concrete mixtures in outfall sewers: A comparative study

This paper presents a comparative study on the corrosion rate and microstructural characteristics of Portland cement (PC) and calcium aluminate cement (CAC)-based concrete mixtures subjected to microbially-induced sulphuric acid (biogenic H2SO4) attack ...
Kiliswa, Moses W., Alexander, Mark G., Scrivener, Karen L.   +2 more
core   +1 more source

In Situ Transmission Electron Microscopy (TEM) Investigation of Fracture Mechanisms in a Calcium Aluminate MDF Cement.

, 1991
Fracture mechanisms in calcium aluminate macro-defect-free-cement were studied by in situ deformation in the TEM. Fracture occurred predominantly at the cement / polymer interface.
O. O. Popoola, W. M. Kriven, J. F. Young
core   +1 more source

Propriedades e bioatividade de um cimento endodôntico à base de aluminato de cálcio Properties and bioactivity of endodontic calcium aluminate cement

Cerâmica, 2011
Desde sua introdução na endodontia como um material retro-obturador e selador de defeitos da raiz dental, o agregado de trióxido mineral (MTA) tem sido considerado como um material endodôntico revolucionário. Apesar disso, este material apresenta algumas
I. R. Oliveira, V. C. Pandolfelli
doaj   +1 more source

The Hydration and Calcination Mechanism of Calcium Aluminate-Based Ultra-High Strength Cement with Calcium Sulphoaluminate Compound

, 1989
The hardening shrinkage of calcium aluminate based ultra-high strength cement becomes nearly zero by using calcium sulphoaluminate compound, and very high bending strength can be obtained by calcinating at 300°-600°C.
Etsuo Sakai, Masaki Daimon, Iwao Mino, Asaaki Nishioka   +3 more
core   +1 more source

Calcium aluminate cement hydration in a high alkalinity environment

Materiales de Construccion, 2009
The present paper forms part of a broader research project that aims primarily to devise new cementitious products via the alkali activation of silico-aluminous materials.
C. Pastor, A. Fernández-Jiménez, T. Vázquez, Á. Palomo   +3 more
doaj   +1 more source

Research on the Mechanical Properties of Composite Grouting Materials Based on Ordinary Portland–Sulphoaluminate Cement

Buildings
This study aimed to enhance the mechanical properties of calcium sulfoaluminate cement grouting materials (HCSA) by investigating the effects of ordinary Portland cement (OPC) content, the ratio of quicklime to gypsum, and the dosage of sodium aluminate ...
Zhenhua Wang, Wei Lan, Zhiwen Jia, Manqing Lin, Dongwei Li   +4 more
doaj   +1 more source

Effects of Sodium Tripolyphosphate Addition on the Dispersion and Hydration of Pure Calcium Aluminate Cement. [PDF]

Materials (Basel), 2023
Cheng B, Feng H, Armia E, Guo H, Zhang S, Zhang H.   +5 more
europepmc   +1 more source

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

Restor Dent Endod, 2023
da Rosa AF, Amaral TS, Paz Dotto ME, Goulart TS, Rossetto HL, Bortoluzzi EA, Teixeira CDS, Garcia LDFR.   +7 more
europepmc   +1 more source

Predicting Compressive Strength and Hydration Products of Calcium Aluminate Cement Using Data-Driven Approach. [PDF]

Materials (Basel), 2023
Ponduru SA, Han T, Huang J, Kumar A.
europepmc   +1 more source

Characterization of two calcium aluminate cement pastes

, 2021
Este capítulo examina la caracterización de cementos de aluminato de calcio (CAC) con 52% en peso y 71% en peso de contenido de alúmina. Las muestras de pasta de cemento se fabricaron en proporciones de agua a cemento de 0,4 y 0,5 (a / c). La microestructura tanto de los polvos de cemento crudo como de sus correspondientes muestras se caracterizaron ...
ZAPATA MESA, JOHN FERNANDO, COLORADO, HENRY ALONSO, GOMEZ BOTERO, MARYORY ASTRID   +2 more
openaire   +1 more source