Modification of cement binders by polyvinyl acetate dispersion
The process of obtaining the efficient polymer-cement material which includes water polyvinyl acetate dispersion and superplasticizer is considered. Basic physical-mechanical and hydrophysical characteristics (average density, compression resistance, flexural rigidity and water absorption) are presented depending on the content of polyvinyl acetate dispersion in the obtained modified material. Graphs of the dependence of listed properties on the content of aqueous polymer dispersion are analyzed. Thanks to the combined action of mineral and organic binders and hyperplasticizer the authors have obtained polymer-cement materials which possess water-resistance, lower density and the improved strength parameters under bending.