Industrial experiment for using complex additive based on waste products from microbiological synthesis enterprises in the construction industry

The article discusses the experiment for using waste products from microbiological synthesis enterprises for the production of vitamins, medicines, antibiotics and other types of products in the manufacture of chemical additives in order to improve the basic properties of building materials, products and structures. It has been found that the waste native solution of oleandomycin (ONRO) and levorin (ONRL) has a significant plasticizing effect on cement compositions, increasing the diffusion of the cone from the cement-sand mortar (C: S = 1: 3) by 25-30% compared to the control one, and thereby reducing water consumption by 15%. The proposed additives have a positive effect on the plasticity of the concrete compound, their efficiency is virtually the same as that of the C-3 additives. Reduction in the consumption of cement in rigid concrete compounds with a maintained constant value of the water-cement ratio allows saving it by 10-12% without reducing the concrete strength. In expanded clay-concrete mixtures, due to the use of ONRO additive in an amount of 0.15% of the cement mass, water consumption is reduced by 20% with the same rigidity according to the technical viscometer. This helps to increase the strength of expanded clay concrete by 22% and the module of elasticity by 13.7%. The authors develop averaging schemes for waste native solutions, the use of which makes it possible to exclude fluctuations in the material composition and to increase the homogeneity coefficient at least by three times for combined batches of solution in comparison with its separate parts. At the factory of reinforced concrete products, using the proposed additives, floor slabs, curbs for roads, piles and other products with good technic-economical and operational indicators are manufactured.