Increasing the Biostability of Concrete by the Introduction Of Additives

To increase the resistance to fungal corrosion and improve performance of concrete cement stone, it is proposed introduce calcium stearate active metal nitrates in an amount 0.5% by weight into mixture at manufacturing stage. determine degree damage stone microorganisms Aspergillus niger, porosity, density, water absorption strength were determined. It has been found that introduction a hydrophobic additive during manufacture reduces absorption, porosity increases strength. Additives metals do not affect characteristics concrete. As result 6 months corrosion, density containing did change, decreased 4%. Metal prevent microorganisms, but slow down flow aggressive substances surface reinforcement The combined will concrete, its ensure safety