Abstract: This paper has chosen five main components of common grinding aids, which are added during grinding process and added into cement products respectively, to discuss the compatibility between cements containing grinding aids and superplasticizers． Test results show that the phenomenon of incompatibility between cements containing grinding aids added during grinding process and superplasicizers exsists, but does not between cements containing grinding aids added into cement products and superplasticizers． Through other auxiliary experiments and consulting relevant documents, this paper also discusses the main factors influencing the compatibility between cement grinding aids and superplasticizers preliminarily．
