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Isothermal Conduction Calorimetry Analysis of Alkali Activated Slag Binder
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 Title & Authors
Isothermal Conduction Calorimetry Analysis of Alkali Activated Slag Binder
Choi, Young-Cheol; Cho, Hyun-Woo; Oh, Sung-Woo; Moon, Gyu-Don;
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 Abstract
In this research, isothermal conduction calorimetry analysis has been conducted to investigate the reactivity of alkali activated slag binders. In order to secure the reactivity and workability of alkali activated slag binders, experiences with various types and concentrations of alkali activators were performed. Isothermal conduction calorimetry were measured with different alkali activators and mass ratio of to binders as variables, and sodium tripolyphosphate () and hydrated sodium borate () were used to control setting time. As a results, alkali activated slag binders required alkali activators with 4 to 5 percent of concentration to accelerate the formation of calcium silicate hydrate(C-S-H) by alkali-activation, and overall heat generation rate delayed as accumulated heat decreased due to the high contents. Moreover, the use of hydrated sodium borate as setting retarder causes elongated setting time due to delaying heat generation, so it can be considered that setting retarder played an important role in delaying total heat generation rate.
 Keywords
Isothermal conduction calorimetry analysis;Alkali activated slag;Geopolymer;
 Language
Korean
 Cited by
 References
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