maintaining a 20 mm water level above sample surfaces. Subsequently, the specimens are transferred to an oven and dried at 105°C for 24 h, as illustrated in Figure 2. Post-drying, samples were ...

The completely dried samples were homogenized with a 2 mm sieve and pulverized with a mixer mill (MM400, RETSCH GmbH, Haan, Germany). The LECO RC612 multiphase carbon analyzer (LECO Europe B.V., AG ...