Abstract
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.
Highlights
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)
In the production of foam concrete, a method was used in which foam was prepared in the foam generator, a solution of cement, filler and water was prepared. 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)
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
Summary
Целью настоящего исследования является изучение повышения оборачиваемости опалубки и снижение трудоемкости опалубочных работ для монолитного пенобетона регулированием его свойств за счет оптимального использования местных заполнителей Республики Дагестан и отходов производства. В частности, использовались при проведении экспериментальных работ цемент марки М500, кремнеземистый заполнитель - кварцевый песок месторождения в Кумторкалинском районе Республики Дагестан с низким модулем крупности, различные синтетические пенообразователи, перлитовый песок, молотый керамзитовый песок (г.Кизилюрт, РД), отсев камнедробления (г.Кизилюрт). При проведении исследований определялось водоцементное отношение при использовании трех видов заполнителя (керамзитовый песок, кварцевый песок месторождения в Кумторкалинском районе и перлитовый песок). Результаты исследований показали, что при увеличении водоцементного отношения при использовании трех видов заполнителя (керамзитовый песок, кварцевый песок месторождения в Кумторкалинском районе и перлитовый песок) возрастет показатель текучести пенобетонной смеси. Доказана возможность повышения оборачиваемости опалубки и снижение трудоемкости опалубочных работ для монолитного пенобетона регулированием его свойств за счет оптимального использования местных заполнителей и отходов производства. Ключевые слова: водоцементное отношение, показатель текучести, пенобетоная смесь, трудоемкость, опалубочные работы, кратность, перлитовый песок, молотый керамзитовый песок
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