On the mechanism of action of cement grinding aids

The paper offers a theoretical substantiation of the mechanism of action of additives during cement grinding caused by the removal of surface electrostatic charges. The interrelation between the surface conductivity of cement particles and the class of organic compounds is established. Statistical methods were used to prove the influence of the type of the additive introduced and the mineralogical composition of the clinker on the dielectric resistance of cement particles and the fluidity of the powder. The results of the experiment and large-scale industrial practice are consistent with the proposed assumption about the possibility of removing electrostatic charges and regulating the fluidity of cement powder with the help of technological additives prone to polarization.

Author: L.D. Shakhova, R.A. Kotlyarov, E.S. Chernositova

Section: Science and production

Keywords: grinding intensifiers, surface electrostatic charges, mechanism of action, dielectric resistance