Тошкент архитектура-қурилиш институти ҳузуридаги илмий даражалар берувчи dsc

Research objectives: The following objectives are planned to achieve the 
objective: 
development of automated programs to select the optimal composition of 
arbolite and thickness of thermal insulation layer of three-layer reinforced concrete 
panels, as well as to calculate the thermal conductivity coefficient of these panels; 
experimental studies of physical-mechanical and deformation properties of the 
developed heat insulating arbolite; 
experimental studies to determine the effect of the number and length of elastic-
bonded reinforcing bars on the carrying capacity of the panel; 
experimental evaluation of the influence of insulation layer thickness on the 
panel's properties, such as strength, crack resistance and deflection; 
comparison of the technical and economic performance of the proposed design 
with alternative options. 
Object of study. Three-layer reinforced concrete panels with an insulation layer 
made of arbolite were taken as the object of study. 
The subject of research is to study the composition, construction and technical 
properties of thermal insulation arbolite, as well as the strength, cracking resistance 
and deflection of three-layer reinforced concrete panels made with its use as an 
intermediate layer. 
Research methods. The method of mathematical planning of experiments of 
composite optimization, modern methods of physical and mechanical tests of 
systems, standard methods of determination of quality indicators of reinforced 
concrete structures, method of statistical analysis of results of experiments were used 
during the research. 
The scientific novelty of the research consists in the following: 
using the components of arbolite concrete (cement and rice husks), a heat-insulating 
material was developed with an average density of 350 - 400 kg / m
3
and a strength of 
0.3 - 1 MPa; 
the magnitude of displacement of elastically connected reinforcing bars under the 
action of a shear force is equal to the sum of the lengths of elastically connected 
reinforcing bars clamped in concrete, while the distance between the edge layers and 
elastically connected reinforcing bars was 1.6 diameters; 
due to the use of heat-insulating wood concrete, a rational composition consisting of 
cement and rice husks, the insulating layer of three-layer reinforced concrete 
structures has an average increase in strength up to 15%, crack resistance and 
deflection up to 10%; 

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due to the use of the calculation method developed in the design of three-layer wall 
panels, it has been proved that the consumption of working reinforcement per 1 m3 of 
the product is reduced to 8%.