Fig. 18

XRD test results for (a) control (b) 5% calcined POLA (c) 30% calcined POLA (d) 5% calcined PLA (e) 30% calcined PLA of cementitious composites. Note: Q = Quartz (SiO2), E = Ettringite [Ca6Al2(SO4)3(OH)12·27H2O], Ca = Calcite (CaCO3), A = Alite (Ca3SiO5), B = Belite (2CaO·SiO2), Ferrite (MO·Fe2O3), Hematite (Fe2O3), M = Mullite (Al6Si2O13), P = Portlandite [Ca(OH)2].