Influence of corrosion longitudinal cracks on rigidity and strength of reinforced concrete structures

摘要

The article deals with the experimental study of the influence of corrosion longitudinal cracks in a protective layer of concrete on the change of deformation and strength properties of central and eccentric compressed reinforced concrete structures. The results of a long-term full-scale experimental study of the kinetics development of the opening width, length, and the integral parameter of corrosion longitudinal cracks are presented. Much attention is given to the functional dependences of change in short-term rigidity and strength of the compressed experimental reinforced concrete structures, both with corrosion-resistant longitudinal cracks, and without corrosion longitudinal cracks, on the value of the eccentricity. The functional dependences of the change of the relative values of rigidity and strength on eccentricity are shown. The results are obtained during a short-term test on the compressive load of the direct models of reinforced concrete pillars with corrosion longitudinal cracks and without them.