Effectiveness of the Top-Down Nanotechnology in the Production of Ultrafine Cement (~220 nm)

Table 6

Summary of the peaks correspond to different chemical phases which appeared at different 2θ value in the X-ray diffractograms of the cement samples (before and after 6 h milling).

Cement type	Peaks correspond to the chemical phases which appeared at different 2θ value in XRD analysis
	18.18°	28.6°	29.3°	32.2°	34.3°	41.1°	42.8°	46.9°	50.9°	53.8°	55.1°
Before milling	CH^a	CH	C3S^b	C3S, C2S^c	CH	C3S	Ferrite	CH	C3S	CH	CH
After milling	CH	CH (high^d)	C3S (low^e)	C3S, C2S (low)	CH (high)	—	—	CH (high)	C3S (high)	—	CH (high)

aCalcium hydroxide; ^btricalcium silicate; ^cdicalcium silicate; ^dintensity high in the X-ray diffractogram; and ^eintensity low in the X-ray diffractogram.