Cracks in monolithic concrete constructions, their correlation with capacity and durability forecast

21st International Scientific Conference on Advanced in Civil Engineering "Construction - The Formation of Living Environment"

土木建筑工程

Kotov, Vyacheslav^1 ; Kunin, Yuriy^1 ; Safina, Larisa^1

Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow

129337, Russia^1

关键词: Concrete shrinkage;    Crack formation and growths;    Cyclic dynamic loadings;    Different origins;    Load-bearing capacity;    Probabilistic estimation;    Shrinkage cracks;    Technical conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/365/5/052035/pdf
DOI  :  10.1088/1757-899X/365/5/052035

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The article describes the analysis of authors experience in the field of the inspection of buildings technical condition. The results of the study were obtained at different times for a large selection of constructions. The researched objects were of various life cycles or erection stages, used for different purposes. The aim of such an analysis is a probabilistic estimation of the following facts:- the influence of different origin cracks in monolithic reinforced concrete buildings and structures on degradation of their properties, load bearing capacity and durability the origin and causes of cracks in monolithic reinforced concrete constructions in connection with violations of building process concrete shrinkage cracks and load cracks, their interdependence the danger degree of crack formation and growth process in correspondence with durability forecast. The majority of all cracks identified in monolithic reinforced constructions are of the shrinkage origin. The width of cracks opening in general was within the permissible limits according to SP 63.13330.2012 Concrete and reinforced concrete constructions. The verification estimate of constructions determined the convergence of theory and experimental results for crack formation. The shrinkage cracks practically do not influence operational suitability for structures under the static load. But the cyclic dynamic loading upon the open constructions together with the action of the environment is more dangerous for the durability forecast.