Authors:
Sara Goñi Institute of Construction Science “Eduardo Torroja” (CSIC), C/Serrano Galvache, 4, 28033 Madrid, Spain

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Ana Guerrero Institute of Construction Science “Eduardo Torroja” (CSIC), C/Serrano Galvache, 4, 28033 Madrid, Spain

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Abstract

The effect of alkaline hydrothermal activation of class-C fly ash belite cement was studied using thermal analysis (TG/DTG) by determining the increase in the combined water during a period of hydration of 180 days. The results were compared with those obtained for a belite cement hydrothermally activated in water. The two belite cements were fabricated via the hydrothermal-calcination route of class-C fly ash in 1 M NaOH solution (FABC-2-N) or demineralised water (FABC-2-W). From the results, the effect of the alkaline hydrothermal activation of belite cement (FABC-2-N) was clearly differentiated, mainly at early ages of hydration, for which the increase in the combined water was markedly higher than that of the belite cement that was hydrothermally activated in water. Important direct quantitative correlations were obtained among physicochemical parameters, such as the combined water, the BET surface area, the volume of nano-pores, and macro structural engineering properties such as the compressive mechanical strength.

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    Goñi S Guerrero A . Modifications of the C-S-H gel by hydration at 40°C of two types of fly ash belite cements. J Am Ceram Soc. 2008; 91(1): 20914 .

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    Guerrero A Goñi S Allegro VR . Effect of temperature on the durability of class C fly ash belite cement in simulated radioactive liquid waste. Synergy of chloride and sulphate ions. J Hazard Mater. 2009; 165: 9038 .

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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