Raw material and filtered solution were analyzed using energy dispersive X-ray fluorescence spectrometry (Model 700 HS, Shimadzu, Tokyo, Japan).
Particle size was determined by laser grain size measurements (Microtrac Model S 3500, Largo, FL, USA).
X-ray diffraction analysis was carried in raw material and in mortar at 28 days using power an X-Pert system (Philips, Almelo, The Netherland), with CuKα = 1.54 Å, step range from 4 to 70°, with a step size 0.022 seg, operated at 40 kV and 40 mA.
The SEM analysis was performed with a Philips microscope (model XL30, Philips, Almelo, The Netherland). Samples are covered with Au.
Thermogravimetric analysis (TGA/DSC) was carried out using STD Q600 (TA Instruments, New Castle, DE, USA), TA instruments, 50 mg of pulverized samples (<75 µm), temperature ranged from ambience to 1000 °C with a heating rate of 5 °C/min under ultrapure N2 atmosphere to prevent carbonatation.
Particle size was determined by laser grain size measurements (Microtrac Model S 3500, Largo, FL, USA).
X-ray diffraction analysis was carried in raw material and in mortar at 28 days using power an X-Pert system (Philips, Almelo, The Netherland), with CuKα = 1.54 Å, step range from 4 to 70°, with a step size 0.022 seg, operated at 40 kV and 40 mA.
The SEM analysis was performed with a Philips microscope (model XL30, Philips, Almelo, The Netherland). Samples are covered with Au.
Thermogravimetric analysis (TGA/DSC) was carried out using STD Q600 (TA Instruments, New Castle, DE, USA), TA instruments, 50 mg of pulverized samples (<75 µm), temperature ranged from ambience to 1000 °C with a heating rate of 5 °C/min under ultrapure N2 atmosphere to prevent carbonatation.