Moisture loss from freshly laid concrete, depending on the temperature and humidity of the environment

The scholarly literature on the transfer of cotton to an air-assisted carrier is thoroughly examined in this article. The theoretical foundation for the procedure of transferring cotton to an air-assisted carrier device was developed based on the findings of nzary and practical work. The movement trajectories of cotton in the distance to the pipe and inside the pipe were measured when raw materials were transmitted to the starting part of the pipe of the carrier device using air at different starting speeds. Cotton moves in the first section of the pipe and then progressively transitions into the rectilinear movement in this instance, as is theoretically demonstrated.

Theoretical and practical aspects of the air exchange process when feeding cotton into the pipes of the carrier device

Sarimsakov,

Kadirova

2024

Temperature deformation calculation of reinforced concrete parts in hot and dry climates

Rizayev,

Isroil,

Jasurbek

2024

This paper presents a study on the temperature deformations of reinforced concrete elements in Uzbekistan’s arid and hot climate. The calculation of axis length and curvature for long-term alternating heating and cooling is essential for concrete and reinforced concrete elements in these conditions. The study’s findings can help engineers and construction professionals accurately calculate temperature changes in reinforced concrete elements in arid and hot climates, minimizing the risk of damage and reducing maintenance costs.

Study of the influence of ultrasound on the wear resistance of coatings made of composite polymer materials for the shape of architectural and artistic reinforced concrete products

Mukhitdinov,

Dadakhanov,

Nuritdinov

2024

This paper investigates the impact of ultrasound on the physicalmechanical properties and wear resistance of polymeric composite materials and coatings used in architectural-artistic concrete products. The study is motivated by the frequent failure of polymer coatings on the working surfaces of technological equipment. The research focuses on the development of effective thermosetting epoxy polymeric materials with high adhesion and wear resistance properties for use in the working surfaces of architectural-artistic concrete products. The study examines the effect of ultrasonic treatment on the wear resistance of epoxy polymeric composites in contact with concrete. The investigation uses two types of base compositions of the binder. The compositions are filled with various industrial dispersed and fibrous fillers, including graphite, carbon fibers, soot, iron powder, cement, talc, kaolin, glass fiber, PTFE, and high-density polyethylene. The study is significant as it provides insights into the development of effective thermosetting epoxy polymeric materials with high adhesion and wear resistance properties for use in the working surfaces of architectural-artistic concrete products. The results of the study can help improve the efficiency and durability of metal equipment used in the production of concrete products.