Creation of Teflex Biocidal Preparations from the Synthesis of a New Polymer to the Product Line. Part 2. Study of the Effect of Teflex Preparations on the Properties of Cement Composites

Abstract

1. Damages of building materials caused by the growth and development of bacteria and filamentous fungi on them are a serious danger both for the structures of buildings and for human health. One of the effective ways to eliminate these negative factors is the introduction of biocidal additives into their composition.

The results of the study of the properties of cement composites containing various biocidal preparations based on the guanidine group (PGMG), which are produced in the Russian Federation on an industrial scale under the Teflex brand, are presented. During the research, the following brands were considered: Teflex Antimold, Teflex Antisalt wash, Teflex Restorator, Teflex Protection for metal, Teflex disinfectant, Teflex industrial. It is shown that the use of biocidal preparations helps to reduce the overgrowth of samples of cement composites by filamentous fungi and the manifestation of fungi-resistant and fungicidal properties in them.

Using the method of X-ray diffraction analysis, it was revealed that the introduction of guanidine compounds into the composition of the compounds changes the quantitative content of the minerals alite and belite. Cement composites, which harden both under normal temperature and humidity conditions and have undergone thermal- moisture treatment, have been investigated. It was found that the introduction of all the considered additives has a plasticizing effect and changes several other properties. The strength of cement composites with additives in the amount of 3-5 wt. parts increases. The results of studying the properties of composites filled with quartz powders of various dispersion and the Teflex preparation are presented. In this case, along with single-fraction compositions, multi-fraction compositions were considered. The obtained results give grounds to recommend cement compositions containing additives based on guanidine for use in buildings and structures with biological media. The information on the results of using cement materials and products in the construction industry is given.