Acta Scientiarum Polonorum

The article analyzes silver colloids stabilized with starch hydrolysates for their bactericidal properties as well
as determining the size and shape of investigated colloids. The strength properties of cement mortars with the
admixtures of the analyzed starch hydrolysates, sodium lignosulfonates and their combination with nanosilver
were also investigated. To determine the presence of silver nanostructures, colloidal silver were analyzed with UV-vis spectrophotometry. The particle size distribution and the shape of nanoparticles were analyzed
by non-invasive backscattering light method and transmission electron microscopy (TEM), respectively. The
resulting silver colloids showed strong resistance to domestic bacteria. The combination of the aforementioned
properties of nanosilver with the plasticizing properties of plasticizers, provides the possibility of producing
cement mortars and concretes resistant to microorganisms with significantly improved workability and
compressive strength.