fig4

Figure 4. XRD pattern of the hydration products. (A) the XRD results of the samples cured for 28 days without gypsum and the XRD spectra of the cementitious materials; (B) the XRD results of the samples cured for 28 days without gypsum and the XRD spectra of the cementitious materials; (C) the XRD results of the samples cured for 28 days without gypsum and the XRD spectra of the cementitious materials; (D) the XRD patterns of the cementitious materials.