Technological parameters influence on the non-autoclaved foam concrete characteristics

Abstract

Abstract. Foam concretes are used as effective heat-insulating materials. The porous structure of foam concrete provides good insulating and strength properties that make them possible to be used as heat-insulating structural materials. Optimal structure of non-autoclaved foam concrete depends on both technological factors and properties of technical foam. In this connection, the possibility to manufacture heat-insulation structural foam concrete on a high-speed cavity plant with the usage of protein and synthetic foamers was estimated. This experiment was carried out using mathematical planning method, and in this case mathematical models were developed that demonstrated the dependence of operating performance of foam concrete on foaming and rotation speed of laboratory plant. The following material properties were selected for the investigation: average density, compressive strength, bending strength and thermal conductivity. The influence of laboratory equipment technological parameters on technical foam strength and foam stability coefficient in the cement paste was investigated, physical and mechanical properties of non-autoclaved foam concrete were defined based on investigated foam. As a result of investigation, foam concrete samples were developed with performance parameters ensuring their use in production. The mathematical data gathered demonstrated the dependence of foam concrete performance on the technological regime.

Foamer Influence on the Foam Concrete Properties Obtained in the High-Speed Foam Generator

“…During the experiment the process of air entrainment were providing with high-speed laboratory foam generator (Fig. 1), the volume of 1 -3 liters with removable mixing tank [9]. The design of the foam generator work member was figured for the air entrainment due to the bubbles formation in the liquid (cavities), filled with an ambient air.…”

Study of the Degree of Homogeneity of Foam Concrete Produced by Two-stage Introduction of Foam

“…В результате применения данной технологии был решен ряд вопросов, касательно качества поровой структуры и плотности, однако проблема усадки материала в процессе схватывания осталась нерешенной. Несмотря на это, классический метод производства продолжают активно использовать с применением разного рода добавок [5].…”