Popruga P. Plasticized concrete mixes on the basis of GIR-2 for repair and renovation of reinforced concrete constructions

Object – the source concrete mixes and concretes are modification (repair and commodity). Methods – traditional after operating normative documents, physical and chemical. Novelty - when analyzing the microstructure formation of cement stone it becomes evident, that the steric effect causing the dispersion of liquid original ferric sulfates brings to modification of calcium hydrosulfoalumoferrite and low-base hydrosilicate. Changes in the microstructure of equation products of cement stone owing to sulfate-iron-containing additive and superplastisicers contribute to formation of close microstructure of cement stone in the concrete having as a result an increased concrete properties, i.e. strength, adhesion, shrinkage and others. The results of the work are realized for the functional joints repair of reinforced concrete construction of Pivdenniy Bridge over the Dnieper River in Kiev. Introduction - at repair of reinforce-concrete constructions of bridge “Sonth” across the river Dnepr in town Kyiv. Industry is building.