Answer
For clay-based aggregates, a liquid phase forms during firing that infiltrates the pores between the unmelted particles. Upon cooling, this liquid becomes a glass that serves as the bonding phase.
With cements, the bonding process is a chemical hydration reaction that is between the water that has been added and the various cement constituents. The cement particles are bonded together by reactions that occur at the particle surfaces.
Work Step by Step
For clay-based aggregates, a liquid phase forms during firing that infiltrates the pores between the unmelted particles. Upon cooling, this liquid becomes a glass that serves as the bonding phase.
With cements, the bonding process is a chemical hydration reaction that is between the water that has been added and the various cement constituents. The cement particles are bonded together by reactions that occur at the particle surfaces.
