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EXTERIOR PRESSURE OF THE GASEOUS MEDIUM AS AN ADDITIONAL TECHNOLOGICAL FACTOR FOR OPTIMIZING THE VAPORIZATION PROCESS IN THE PRODUCTION OF CELLULAR SILICATE CONCRETE

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Author(s): A. A. Rezanov

Journal: Scientific Herald of the Voronezh State University of Architecture and Civil Engineering
ISSN 2075-0811

Volume: 4;
Issue: 4;
Start page: 13;
Date: 2012;
Original page

Keywords: cellular concrete | force balance | a macrostructure | pressure | pore formation | automatic control | gaseous phase pressure

ABSTRACT
Statement of the problem. The quality of silicate porous concrete is largely determined by vapor-ization processes at the stage of the formation of the macrostructure of the obtained material. In the production of cellular concrete with the use of injection molding, the existing manufacturing technologies do not enable the expeditious handling of the vaporization process. This is why there is a growing need to develop additional efficient methods of handling the vaporization process thus improving cellular silicate concrete.Results. Based on modelling and detailed examination of the balance of pressure affecting devel-oping gas pores, mechanisms and factors governing a defect-free structure are found. An additional governing factor, which is a pressure of the external gaseous medium, was discovered. The approaches to handling the vaporization process have been developed and a plant fitted with a system of automatic control of vaporization process by conscious operative pressuring effect from the external gaseous phase on a poring mixture has been designed.Conclusions. Theoretical validation along with the results of the experimental study help to arrive at the conclusion about the efficiency of the suggested system in controlling vaporization that could provide a good addition to the traditional injection molding and make it more susceptible against varying characteristics of raw materials.
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