Cellular vibro pneumatic compacted corundum. Part 1. Features of the use of vibropressing when obtaining highly phase refractories based on a spherical burning additive

The study of a spherically burning supplement and methods of vibropressing alumina-foam polystyrene mixtures with low molding moisture ensure immediate raw flooring, the mechanization of the main technological converters, the elimination of cropping and grinding products. The peculiarities of the physico-mechanical processes of vibropressing molding masses on the easier-forming polystyrene foam, based on the features of the macro and microstructure of the burning additive are considered. Ill. 1.

Cellular vibro pneumatic compacted corundum. Part 2. Features of physical and mechanical processes of vibration treatment of alumina-foam polystyrene mixtures

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Improving the Efficiency of Non-Stationary Climate Control in Buildings with a Non-Constant Stay of People by Using Porous Materials

This article presents the results of experimental research on the non-stationary management of the internal climate of buildings with a non-constant stay of people. During the absence of people, a significant drop in air temperature and corresponding energy conservation in heating is possible. The effectiveness of porous building materials is shown, provided that the appropriate characteristics are selected. Daily fluctuations in the outside temperature are completely extinguished by a layer of foam polystyrene insulation. The absence of channel porosity in the structural material of the wall is a guarantee of the stability of its thermal and humidity regime. This, in turn, prevents the development of mold and mildew.

Improve the thermal and mechanical properties of foam polystyrene by gebrile soil

n this research we tried to improve the thermal insulation efficiency of polystyrene foam by adding some natural materials. The gebrile soil was selected for several reasons, including abundance and ease of processing before the addition - There are many previous researches for soil treatment -. We have found at ratio 20%(The proportion of the soil in the compound) the coefficient of conduction is low and then rises after this percentage As for the absorption of water it increases by increasing the soil, but at this ratio the absorption is within the permissible limit according to the specifications required for the insulation materials and also compressive strength increase with the increasing of the soil ratio because of increasing of mechanical links between the polycarbonate and polystyrene particles and composite-material’s density increasing in general.

Heat-Insulating Properties Of Effective Light Weight Concretes For Three-Layer Protecting Coverings Of Buildings

Аt present, an intensive change in the structure and materials of building envelopes is taking place in order to increase the energy efficiency of buildings, as well as to improve their appearance and extending the period of maintenance-free operation. The paper presents the results of studies of the physical-mechanical properties of light polystyrene concrete and effective heat-insulation of three-layer structures based on heat-insulating light and structural heavy concrete. To obtain the concrete mixture, Portland cement, granular foam polystyrene, polycarboxylate super-plasticizer, quartz sand and limestone crushed stone were used. All raw materials were of local origin (Vietnam). The composition of the heavy and light concrete mixture was calculated using the absolute volume method according to the standard of Vietnam, the thermal conductivity of concrete was measured with an appropriate device. It has been established that using local surface components it is possible to obtain structural concrete, as well as polystyrene concrete, which has sufficient tensile and tensile strength during bending and heat conduction in the dry state. From the calculations made with the use of the computer program, it follows that the three-layer reinforced concrete coating slab, consisting of heavy and polystyrene concrete, has better thermal insulation properties compared to a coating of the same thickness of solid and perforated structural concrete, as well as with a panel with foam polystyrene blocks.

Use of Foam Polystyrene Waste in the Conditions of a Reinforced Concrete Products Factory

The relevance of research in the factory laboratory of JSC «198 KZHI», which is part of the HC GVSU «Center», is dictated by the need to dispose of foam polystyrene waste that occurs in large quantities when producing the precast concrete. In the production of three-layer external wall panels, polystyrene heatinsulating plates of the PPS 17-R-A brand are used as an effective insulation material. The secondary use of PPS 17-R-A for its intended purpose, as a heater, is not possible. The volume of foam polystyrene produced varies from 25 to 45 m3 per month. Utilization (disposal) of foam polystyrene waste is an expensive undertaking. Its use as a filler in the production of expanded polystyrene blocks was tested in the factory’s laboratory to produce foam polystyrene concrete with specified physical and mechanical characteristics. The results of testing of expanded polystyrene concrete of classes B2.5 and B 7.5 are presented. It is shown that under the conditions of the reinforced concrete factory technology, the production of polystyrene concrete blocks is possible with the achievement of the design strength. The information presented in the article is aimed at motivating specialists who produce recast concrete to the possibility of using foam polystyrene waste for low-rise construction. Keywords: foam polystyrene, ecology, energy efficiency, foam polystyrene concrete, foam polystyrene heat insulation plates, precast concrete.