On the revision of the “Reinforced concrete slabs for pavements of city roads” interstate standard

Abstract

Introduction. For 38 years since the introduction of State Standard 21924.X-84, the regulatory framework for the design and manufacturing of reinforced concrete products has been significantly adjusted and supplemented. In this regard, the authors of the present article have developed an updated interstate standard for reinforced concrete slabs of city road pavements, taking into account amendments in the regulatory literature.Aim. To justify State Standard 21924.X-84 updating and present the updated State Standard 21924-2023 to specialists in the design of city roads and production of reinforced concrete slabs for city roads.Materials and methods. The analysis of existing regulatory documents and materials of contemporary studies in the field of materials science and road slab design was carried out. The authors provided the information on the updated interstate standard State Standard 21924-2023 “Reinforced concrete slabs for pavements of city roads. Specifications”, which specifies the rules and requirements for the design, testing and manufacturing technology of reinforced concrete slabs for city road pavements.Results. The performed revision toughen the requirements for concrete, expanded the range of selecting the steel for the road slab reinforcement in accordance with State Standard 34028, and brought the road slab loads in line with the current State Standard 32960. All four State Standards editions are combined into one document. Reinforcing materials, reinforcement specifications, as well as instructions for the design of reinforcement products were removed from the previous edition. The calculation and design of reinforcement elements is delegated to design organizations, which will develop solutions for the slab reinforcement based on relevant interstate and national regulatory documents.Conclusion. The updated standard specifies the technical requirements and test methods, acceptance rules and monitoring methods, which improves the quality of precast reinforced concrete slabs for city road pavements and significantly increases their durability.