Diatomaceous earth as a functional additive
Improved freeze-thaw resistance, strength and durability of concrete products
Concrete needs to exhibit a high freeze-thaw resistance to ensure long service lives, particularly in the case of concrete products used in road construction. This characteristic is primarily achieved by adding a suitable air void system (using surfactants or hollow microspheres).
A research project was initiated to investigate the application potential of natural and calcined diatomaceous earth as a concrete additive. Diatomaceous earth is also referred to as diatomite, kieselgur, natural/amorphous silica, or moler earth. This porous lightweight mineral based on silicon dioxide (SiO2) is...
