Research of the water-ducting effect of concrete mixture with the application of bioplast plastificator
Abstract
At present, the vast majority of concrete mixtures are made using plasticizers, which increase their mobility, convenience, reduce the energy and labor costs when enclosing monolithic building structures, facilitate the intensification of the technological cycle, and enhance the quality of structures.
There is a large number of types of plasticizers, but in the city of Lutsk at the microbiooprom plant from the steamed molasses bards, which is a secondary waste of bioethanol production, an ecological biopolymer plasticizer Bioplast-1 was obtained, the properties of which have not yet been studied.The plaster is made on the basis of environmentally safe biopolymers that form useful, safe microorganisms - cellulose type, lignin-pectin type (microfibre), hydrocarbon, protein type (polymer molecule), alkali metals (potassium, sodium), alkaline earth metals (calcium, magnesium), phosphorus compounds and other biocomponents. Bioplast-1 is a dense syrup liquid of dark brown color with a concentration of substances of 50 - 60%, a density of 1,25 - 1,29 g / cm3. It is used for the production of prefabricated reinforced concrete pre-stressed and monolithic structures, for use in non-aggressive and aggressive gas and water environments.
In the paper the influence of the plasticizing ecological additive from the alcoholic waste production on the mobility of the concrete mixture and the strength of the concrete cubes is considered. The work also establishes the criteria and properties of a plasticizer additive.The work was carried out in two stages: the first stage consisted in the study of the plasticization effects of the additive "Bioplast-1" on the concrete mixture; The second stage included the determination of the effect of the additive on the strength of concrete cubes.The study of the effectiveness of the additive was performed to determine the main effect, to achieve which the additive is intended and an experimental refinement of the optimal dosage of the additive.Bioplast-1 plasticizers have criteria for water-reducing effect and are highly water-reducing.Testing of concrete specimens with Bioplast-1 plasticizer showed the possibility of reducing the water flow rate in the main concrete mix (WRE) by up to 13%. The increase in strength of cubes with the addition of Bioplast-1BL was up to 16%, with the addition of Bioplast-1L - up to 21%.
