Bergold S, Neubauer J, Götz-Neunhoeffer F (2015)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2015
Publisher: Elsevier Ltd
Book Volume: 76
Pages Range: 202-211
DOI: 10.1016/j.cemconres.2015.06.005
For superior understanding of alite hydration an investigation of mechanically activated alite (M3 modification) was performed by XRD and heat flow calorimetry. Activation resulted in reduced particle size, a decreased mean crystallite size and partial amorphization. For the samples of activated alite a significantly accelerated and intensified hydration was observed and complete conversion of alite was found after 24 h. The enthalpy of reaction for crystalline alite was determined to be - 548 J/g from measured heat of hydration after 24 h. The enthalpy of reaction of amorphous "alite" was found to be less exothermic (- 386 J/g). The main hydration period is controlled by nucleation of C-S-H, while the transition from acceleration to deceleration period takes place after consumption of the small alite particles. XRD amorphous C-S-H phase is indicated to precipitate in considerable amount even in the highest activated alite before "long-range ordered", XRD detectable C-S-H was observed.
APA:
Bergold, S., Neubauer, J., & Götz-Neunhoeffer, F. (2015). Mechanically activated alite: New insights into alite hydration. Cement and Concrete Research, 76, 202-211. https://dx.doi.org/10.1016/j.cemconres.2015.06.005
MLA:
Bergold, Sebastian, Jürgen Neubauer, and Friedlinde Götz-Neunhoeffer. "Mechanically activated alite: New insights into alite hydration." Cement and Concrete Research 76 (2015): 202-211.
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