3. Results and discussion
3.1. Physical properties of Portland cement and ground bagasse ash
The particle shapes of the cement and ground bagasse ash are
shown in Fig. 3. The cement particles were angular and irregular
while the original bagasse ash, particles had rough surfaces with
high porosity (‘‘spongy”) and large surface areas. After the bagasse
ash particles were ground, their shapes were small but they still
had rough, porous surfaces.
It should be noted that the particle shape of bagasse ash is completely
different from that of fly ash. Fly ash, melts at a temperature
of about 1500 C, forming spherically shaped particles. If the
burn temperature is below 1500 C, fly ash fails to melt and irregular
particles are formed [10]. It has been reported that spongy
particles are associated with partially burnt fragments of coal
(carbon) resulting from incomplete combustion [11]. Bagasse ash,
burns at a temperature of 600–800 C; the sponge-like particle
shape is obtained because this temperature is lower than the
3. Results and discussion3.1. Physical properties of Portland cement and ground bagasse ashThe particle shapes of the cement and ground bagasse ash areshown in Fig. 3. The cement particles were angular and irregularwhile the original bagasse ash, particles had rough surfaces withhigh porosity (‘‘spongy”) and large surface areas. After the bagasseash particles were ground, their shapes were small but they stillhad rough, porous surfaces.It should be noted that the particle shape of bagasse ash is completelydifferent from that of fly ash. Fly ash, melts at a temperatureof about 1500 C, forming spherically shaped particles. If theburn temperature is below 1500 C, fly ash fails to melt and irregularparticles are formed [10]. It has been reported that spongyparticles are associated with partially burnt fragments of coal(carbon) resulting from incomplete combustion [11]. Bagasse ash,burns at a temperature of 600–800 C; the sponge-like particleshape is obtained because this temperature is lower than the
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