About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Petr D. Arleninov, Candidate of Technical Sciences, Research Institute of Concrete and Reinforced Concrete (NIIZHB) named after A.A. Gvozdev JSC “Research Center of Construction”, Moscow, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0003-4737-1549 |
| Title of the article | Modeling of heating during long-term operation of concrete specimens under load |
| Abstract. | In modern conditions of development of nuclear power engineering and the use of special concretes and new types of structures in construction, the study of materials used at elevated temperatures under the action of long-term loads is of particular relevance. Existing methods of testing for creep of concrete under heating have a number of disadvantages: difficulty in maintaining stable temperature conditions, bulky equipment, impossibility to create high loads and lack of standardized approaches to such tests in Russian and international norms. In this regard, there is a need to develop a new, more efficient methodology that allows mass testing with high accuracy and minimal costs, as the existing methods according to the state standard are not applicable to high-strength concrete. The objective of the study is to develop an experimental methodology to investigate creep deformations of concrete at temperatures up to 90°C, and to develop a compact system for local heating of specimens, compatible with standard spring units for the possibility of setting high loads and using the existing measurement system. Results. An innovative three-component system including thin-plate heaters with automatic temperature control, providing uniform heating of specimens, combined with standard spring units and measuring equipment was proposed. The conducted tests confirmed the system performance: the stability of the temperature regime was achieved; the reliability of deformation measurements was ensured. The methodology allows conducting long-term experiments reliably and safely. Conclusions. The developed method has the following advantages: versatility: applicable for concrete, reinforced concrete and steel-reinforced concrete, including specimens with sheet reinforcement; cost-effectiveness: the use of serial equipment reduces testing costs; high accuracy: automation of heating and modernization of the measuring system minimize errors. |
| Keywords. | creep of concrete under heating, long-term studies, modeling of temperature effects |
| For citations: | Arleninov P.D. Modeling of heating during long-term operation of concrete specimens under load // News of KSUAE, 2025, № 2(72), p. 99-107, DOI: 10.48612/NewsKSUAE/72.9, EDN: GCJQJT |
