Modeling the process of biodeterioration of cement compositions

Abstract

The paper studies the problem of developing the theoretical foundations of the processes of diffusion biodegradation of mineral building materials (cement composites) under the action of aggressive microorganism vital products. The impact of the aggressive environment of microorganisms on the material is taken into account on the basis of Fick’s 2nd law. The resulting equation is solved by the finite difference method. Some experimental and theoretical studies of influence of the aggressive environment of microorganisms on the strength characteristics of the samples of cement composites have been carried out. The mathematical regularities of influence of the exposure time to the aggressive environment of microorganisms and the diffusion coefficient on the strength characteristics of composites have been established.