%0 Generic %A Goni, S. %A Guerrero, A. %A Lorenzo, M. P. %A Moragues, A. %A Campillo, I. %A Dolado, J. S. %T High calcium coal fly ash as raw material for synthesizing new low-energy cements %J American Concrete Institute, ACI Special Publication %D 2004 %@ 0193-2527 %U https://hdl.handle.net/11556/2507 %X Studies on the viability of high calcium fly ash from coal combustion are being conducted in our laboratory to produce a new kind of low-energy cement. The process presents important environmental advantages, such as a reduction of C02 emission compared to that produced by the conventional technology of portland cement manufacture. Furthermore, the processing temperature is also considerably reduced. The low-energy cement shows potential for good hydraulic activity for application in construction. The changes of fly ash composition were followed by X-Ray Diffraction (XRD), F f Infrared (FTIR) spectroscopy and BET surface area analysis. %~