Modeling and Model Verification of the Stress-Strain State of Reinforced Polymer Concrete

Kassym Yelemessov; Layla B Sabirova; Nikita V Martyushev; Boris V Malozyomov; Gulnara B Bakhmagambetova; Olga V Atanova

doi:10.3390/ma16093494

Modeling and Model Verification of the Stress-Strain State of Reinforced Polymer Concrete

Materials (Basel). 2023 May 1;16(9):3494. doi: 10.3390/ma16093494.

Authors

Kassym Yelemessov¹, Layla B Sabirova², Nikita V Martyushev³, Boris V Malozyomov⁴, Gulnara B Bakhmagambetova⁵, Olga V Atanova⁶

Affiliations

¹ Institute of Energy and Mechanical Engineering, Satbayev University, Almaty KZ-050000, Kazakhstan.
² Department of Oil and Gas Production, Satbayev University, Almaty KZ-050000, Kazakhstan.
³ Department of Advanced Technologies, Tomsk Polytechnic University, 634050 Tomsk, Russia.
⁴ Department of Electrotechnical Complexes, Novosibirsk State Technical University, 20, Karl Marks Ave., 630073 Novosibirsk, Russia.
⁵ Department of Mining, Satbayev University, Almaty KZ-050000, Kazakhstan.
⁶ Scientific Department, Satbayev University, Almaty KZ-050000, Kazakhstan.

Abstract

This article considers the prospects of the application of building structures made of polymer concrete composites on the basis of strength analysis. The issues of application and structure of polymer-concrete mixtures are considered. Features of the stress-strain state of normal sections of polymer concrete beams are revealed. The dependence between the stresses and relative deformations of rubber polymer concretes and beams containing reinforcement frame and fiber reinforcement has been determined. The main direction of the study was the choice of ways to increase the strength characteristics of concrete with the addition of a polymer base and to increase the reliability of structures in general. The paper presents the results of experimental and mathematical studies of the stress-strain state and strength, as well as deflections of reinforced rubber-polymer beams. The peculiarities of fracture of reinforced rubber-polymer beams along their sections have been revealed according to the results of the experiment. The peculiarities of fracture formation of reinforced rubber-polymer beams have also been revealed. The conducted work has shown that the share of longitudinal reinforcement and the height of the fibrous reinforcement zone are the main factors. These reasons determine the characteristics of the strength of the beams and their resistance to destructive influences. The importance and scientific novelty of the work are the identified features of the stress-strain state of normal sections of rubber-concrete beams, namely, it has been established that the ultimate strength in axial compression and tension, deformations corresponding to the ultimate strength for rubber concrete exceed similar parameters for cement concrete 2.5-6.5 times. In the case of the addition of fiber reinforcement, this increase becomes, respectively, 3.0-7.5 times.

Keywords: composite materials; concrete structures; geopolymer concrete; rubber polymer concretes; strength analysis.

Grants and funding

This publication was made as a part of the Sub-project “Production of sodium silicate using innovative energy-saving technology”, financed under the “Promotion of Productive Innovation” Project, supported by the World Bank and the Government of the Republic of Kazakhstan. Statements may not reflect the official position of the World Bank and the Government of the Republic of Kazakhstan.