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

International Conference on Construction, Architecture and Technosphere Safety 2018

土木建筑工程

Shamshina, K.V.^1 ; Migunov, V.N.^2 ; Ovchinnikov, I.G.^3

Building Construction Department, Penza State University of Architecture and Construction, G. Titov Str., 28, Penza

440028, Russia^1

City Construction and Architecture Department, Penza State University of Architecture and Construction, G. Titov Str., 28, Penza

440028, Russia^2

Automobile Roads and Bridges Department, Perm National Research Polytechnic University, 19a, Academician Korolev str., Perm

614990, Russia^3

关键词: Compressive loads;    Corrosion-resistant;    Deformation and strength;    Functional dependence;    Integral parameters;    Longitudinal cracks;    Protective layers;    Reinforced-concrete pillars;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/451/1/012058/pdf
DOI  :  10.1088/1757-899X/451/1/012058

学科分类：土木及结构工程学

来源: IOP

【 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.