Effect of Phosphates on the Hydration Process of Alkali Activated Materials

Lukáš Kalina; Vlastimil Bílek Jr.; Kateřina Komosná; Radoslav Novotný; Jakub Tkacz

doi:10.4028/www.scientific.net/MSF.851.63

Paper Titles

The Preparation of Heat Insulating Moulded Refractories
p.39

Strength and Porosity of Materials on the Basis of Blast Furnace Slag Activated by Liquid Sodium Silicate
p.45

The Role of Temperature on Hydration of Binary System of Metakaolin/Portland Cement
p.51

Possibilities of Using Plasticizers in Alkali-Activated Systems
p.57

Effect of Phosphates on the Hydration Process of Alkali Activated Materials
p.63

The Basics of Low Volume Weight Aerated Autoclaved Concrete Preparation
p.69

Optimization of Alternative Aggregates Based on Fluid Combustion Fly Ashes
p.75

Verification of Synthetic Preparation of Thaumasite
p.80

Mechanisms of Macro-Pores Origin in the MDF Composites Fabrication
p.86

HomeMaterials Science ForumMaterials Science Forum Vol. 851Effect of Phosphates on the Hydration Process of...

Effect of Phosphates on the Hydration Process of Alkali Activated Materials

Abstract:

The study deals with the one of the important feature of alkali activated blast furnace slag which is very rapid initial setting. Therefore, the influence of the retarding agents such as phosphates was tested. It is shown that phosphates decreases the hydration heat evolution and retards the hydration reaction of alkali activated slag effectively. The mechanism of retardation is studied through the microcalorimeter and electron microscopy equipped with energy dispersive analyzer (SEM-EDS). The optimal dosage of suitable retarding admixture in the means of mechanical properties has been determined.

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Periodical:

Materials Science Forum (Volume 851)

Pages:

63-68

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.851.63

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Online since:

April 2016

Authors:

Lukáš Kalina*, Vlastimil Bílek Jr., Kateřina Komosná, Radoslav Novotný, Jakub Tkacz

Keywords:

Alkali Activation, Blast Furnace Slag, Phosphates

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