ВЛИЯНИЕ КОМПЛЕКСНОЙ МОДИФИЦИРОВАННОЙ ДОБАВКИ НА КАЧЕСТВО ПРОИЗВОДСТВО ПЕНОБЕТОННЫХ ИЗДЕЛИЙ

Abstract

Abstract. Considering the rapid development of the construction industry and the great demand for new types of building materials, in the article the authors proposed a complex modified additive with a plasticizing effect, which favorably affects the structure of concrete. The article presents the results of a laboratory experiment conducted to determine the effect of a complex modified mixture in various percentages on the setting time of cement paste. The work also describes a method for determining the setting time of cement paste, the preparation of a complex modified mixture in various percentage volumes. In this article, waste from the production of ethyl alcohol (post-alcohol bard), solidification accelerator (gypsum) and alkali (caustic soda) were used to obtain the planned composite mixture. As a result of the experiment, it was found that the sodium compound neutralizes the post-alcohol bard, causing a synergistic effect when interacting with gypsum. Due to the plasticizing effect of the mixture, the interval between the beginning and end of the setting period was reduced and the intensity of the manufacturing process of the product increased. The addition of the modified additive gave the best results as it reduced the initial setting time from (1 hour 55 minutes) to (20 minutes) and the final setting time from (5 hours 10 minutes) to (2 hours 10 minutes). In addition, compared with the control, the amount of water in the samples with additives decreased by 35%.