Effects of Additives Increasing Biological Resistance of Gypsum on Mechanical Properties of Resulting Composite

摘要

The article focuses on the effects of additives increasing biological resistance of gypsum on mechanical properties of resulting gypsum composite. In this study we use Silver Nitrate as an additive that improves biological resistance of gypsum composites. We investigate influence of four different amount of Silver Nitrate (AgNO_3), namely, 0.5 wt.%, 1 wt.%, 1.5 wt.% and 2 wt.%. The determined mechanical properties were flexural strength and compressive strength. The mechanical properties were investigated on the 7 days old samples with dimensions equal to 40 × 40 × 160 mm. The results obtained from these samples were compared with reference material. The results show a negative effect of AgNO_3 on flexural strength.