Multidisciplinary Journal of Science and Technology

RESULTS OF EXPERIMENTS ON THE STUDY OF THE INFLUENCE OF NATURAL CLIMATIC CONDITIONS ON THE STRESS-STRAIN PROPERTIES OF FLEXIBLE REINFORCED CONCRETE ELEMENTS

Khodzhaeva Zulfiya

PhD., Professor Tashkent Architecture and Civil engineering University, UZ

Miyribay Tanbaev

doctorant at Tashkent Architecture Civil engineering University, UZ

Keywords: Unprotected reinforced concrete structures from sunlight, variable air temperature, humidity, solar radiation, thermal stress state

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Abstract

The climate of the Republic of Uzbekistan is located in a dry-hot climate
zone, with hot summers and unstably cold winters. In the summer season, the maximum air
temperature will rise to +43° +45°, in the south and desert zone of the republic to +47° +50°. In the
deserts of the central regions, the annual precipitation is 100 mm, and in the mountains this figure
exceeds 800 mm. Today, in Uzbekistan, over ten years, the air temperature has risen by 0.27°C and
is rapidly increasing, the number of hot days and nights is increasing, sandstorms and winds are
increasing. Therefore, the study of the influence of climatic conditions on the stress-strain properties
of reinforced concrete elements not protected from sunlight is of great importance. In this article,
comprehensive experimental research work was carried out to study the influence of natural climatic
conditions on the stress-strain properties of heavy and light reinforced concrete elements. In this case,
the influence of climatic conditions, daily and seasonal air temperature, and humidity changes on the
properties of heavy and lightweight reinforced concrete was studied. A comparative analysis was
conducted and conclusions were drawn.

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References

1. Sherbakov E.N., Mamajonov R.K. Forecasting the nature of the onset of concrete strength in

the climatic conditions of Central Asia // Scientific and Technical Conference: All-Union

Coordination Meeting.-Tbilisi-Gori.1985- P.81-83.

2. Khudoverdyan V.M. On some properties of summer concrete. //Conferences on the Theory

of Concrete.- Yerevan, 1956. - Б. 72-74.

3. Shmit V.A., Mironov S.A. Kinetics of concrete strength growth during steaming and

subsequent hardening in dry hot climate conditions. //.-sb.nauch.trudov. Ashkhabad. 1976. - P. 203-

214.

4. Mironov S.A., Malinskiy E.N. Fundamentals of concrete technology in hot climate

conditions.-M.: Stroyizdat, 1985.-316 p.

5. Fedorov A.E. Influence of variable ambient humidity on the crack resistance of expanded

clay concrete //Construction and Architecture of Uzbekistan.- Tashkent,1980.-No8.-P.11-13.

6. Assi Mustafa Hasan. Features of the operation of reinforced concrete bending elements in

dry and humid hot climate conditions: Dis. cand.tech.sci. - Moscow: NIIJB, 1995.-150 p.

7. Ashrabov A.A. Study of the influence of the temperature-humidity regime of the environment

on the usefulness and shrinkage of concrete.

8. Khodzhaev A.A., Khodzhaeva Z.Sh. Consideration of the Thermal Stress State in the

Calculation of Reinforced Concrete Structures*.

- Industrial and Civil Construction, 2003