ACCOUNTING OF THE OWN THERMO-STRESSED STATE OF THE SOLID CONCRETE WHILE PROVIDING THE REQUIRED CONSUMER PROPERTIES OF THE CRIMEAN BRIDGE CONSTRUCTIONS

• Main Authors: I. S. Pulyaev, S. M. Pulyaev
• Format: Article
• Language: Russian
• Published: Siberian State Automobile and Highway University 2018-11-01
• Series: Вестник СибАДИ
• Subjects: concrete; cement; exothermic; heat release; bridge; calculation; thermo-stressed state; temperature; strength
• Online Access: https://vestnik.sibadi.org/jour/article/view/751

Introduction. The paper deals with the issues related to the determination and registration of the own thermo-stressed state formed in concrete while hardening and used to provide the required consumer properties in the Crimean bridge construction. Therefore, the problem is relevant because of the deadlines for the construction of such facility in the conditions of rough terrain and dry hot climate, and also taking into account the development of the unique non-class facilities in Russia.Materials and methods. The research is carried out in real-time conditions with the usage of modern measuring systems in practice, allowing to control the process of temperature and strength of hardening concrete in time. The modern computational and analytical complex, which is repeatedly tested under real conditions and by thermophysical calculations of hardening concrete of various class objects and massiveness, is used.Results. The results of the intrinsic thermo-stressed state of hardening concrete are presented in determining the permissible temperature gradient, which make it possible to accelerate the process of erecting the object with observance of the necessary consumer properties.Discussion and conclusion. The main conclusions and suggestions are made taking into account the intrinsic thermally stressed state of the concrete when it was hardened during the construction of the Crimean bridge. The paper would be interesting and useful for engineers and technical workers engaged in real production conditions, and for specialists dealing with the issues of the thermophysical processes occurring in concrete hardening and with the problems of ensuring the high consumer concrete properties in structures.