Chub O. Efficient technologies of reinforced concrete building restoration and construction with a highly frost-resistant top layer of concrete

The object of study - the organizational and technological processes of restoration and construction of reinforced concrete structures. The aim of the thesis: the development of the organizational and technological solutions of works, ensuring the formation of a surface high frostresistant layer in concrete restoration and construction of reinforced concrete structures. Methods: method of process design parameters of the production work on the rehabilitation and construction of reinforced concrete structures; the method of technical regulations; methods of system analysis, abstraction, formalization; methods of mathematical statistics, the method of experimental design; methods, organizational and technological modeling and decision theory. Theoretical and practical results: formulated theoretical understanding of the formation of the contact and the transition zone, which is formed between the layers of concrete, making them work in the operating conditions as the structural integrity of the material, the algorithm and software for automated calculation of the site area, job changes and their derivatives for a team working in the recovery of reinforced concrete structures. Scientific novelty of the study: forthe first time: set organizational and technological patterns, providing formation of high frostresistantsurface layer of the concrete to form a special contact and transition zone in the recovery of reinforced concrete structures; structures a method for determining the complexity of work with the application of the correction factor complexity; further elaborated: organizational solutions for determining the parameters of the site and job changes for one unit working on the basis of automated methods for calculating them in the recovery of reinforced concrete structures, depending on the degree of damage, the design principles of situational organizational decisions determine the minimum cost of delivery of concrete mixtures and the optimal distance between the parking cyclic-roaming concrete mini-mills using automated methods of calculation in the construction of linear-extended objects. The degree of implementation: development of technological regulations, instructions and manuals, as well as projects for the production of works on formation high frostresistant surface layer in concrete restoration and construction of reinforced concrete structures in a number of facilities in Ukraine and Russia. Confirmed economic effect amounted to more than 6 million hryvnia (in 2009 prices). Application: High-rise construction and rehabilitation of reinforced concrete structures with high requirements for concrete frost resistance.