REDUCTION OF EMPLOYMENT OF FORMULA WORKING BY USING LOCAL FILL-ERS AND WASTE OF PRODUCTION

• Main Authors: A. O. Omarov, K. A. Otsokov
• Format: Article
• Language: Russian
• Published: Daghestan State Technical University 2019-05-01
• Series: Vestnik Dagestanskogo Gosudarstvennogo Tehničeskogo Universiteta: Tehničeskie Nauki
• Subjects: water-cement ratio; flow index; foam concrete mixture; complexity; formwork; multiplicity; perlite sand; ground expanded clay sand
• Online Access: https://vestnik.dgtu.ru/jour/article/view/606
• ISSN: 2073-6185; 2542-095X

Objectives. The purpose of this study is to study the increase in turnover of formwork and reduce the complexity of formwork for monolithic foam concrete by regulating its properties through the optimal use of local aggregates of the Republic of Daghestan and industrial waste. In particular, the experimental work used cement grade M500, silica filler - deposits of quartz sand in Kumtorkala district of the Republic of Daghestan with a low module of size, various synthetic foaming agents, perlite sand, ground expanded clay sand (Kizilyurt, Republic of Daghestan),stone crushing roar (Kizilyurt).Method. In the production of foam concrete, a method was used in which foam was prepared in the foam generator, then a solution of cement, filler and water was prepared. Then the foam is mixed with a solution in a foam mixer until a set of appropriate multiplicity. (Multiplicity in this case was defined as the ratio of the volume of the foam concrete mixing solution after mixing to the volume of the solution before mixing). During the study, the water-cement ratio was determined using three types of aggregates (expanded clay sand, quartz sand deposits Kumtorkala district and perlite sand). The turn-over rate of the concrete mixture was determined using the Attard viscometer.Result. The results of studies have shown that with an increase in the water-cement ratio using three types of aggregates (expanded clay sand, quartz sand deposits Kumtorkala district and perlite sand ) will increase the flow rate of the foam concrete mixture.Conclusion. At the same values of the water-cement ratio, the mixture with a filler of perlite sand has the lowest fluidity, which in turn affects the further structure formation of foam concrete and allows you to choose the optimal composition with the desired properties. The possibility of increasing the turnover of artwork and reducing the complexity of artwork work for monolithic foam concrete by regulating its properties due to the optimal use of local aggregates of the Republic of Daghestan and industrial waste.