In the present study, experiments are carried out to investigate the behavior of the tensile crack of the reinforced concrete structure. Moreover, the fracture morphology and mechanical properties of the tensile crack are analyzed with the fractal geometry theory and reverse engineering. The obtained results show that the axial force of the tensile crack increases with the crack sequence. When the crack reaches a stable state, the number of cracks does not change, while the width of the crack increases. It is found that fractures of the structural tensile crack have distinct fractal characteristics and the fractal dimension shows a decreasing trend as the cracking axial force increases. Obtained results show that the correlation between the crack axial force and the fractal dimension of the fracture follows a power function. It is demonstrated that the fractal dimension of the fracture depends on different parameters, including the tensile strength of the concrete, cross-sectional area of the structure, ratio of the elastic modulus of the steel bar to that of the concrete, and the reinforcement ratio. Moreover, the fractal dimension of the tensile crack is calculated to evaluate the tensile force of the structure. Based on the obtained results, it is found that appropriate and timely measurements can avoid the built-in steel bars reaching yield and causing the structure to lose its bearing capacity completely.
Study on the Relationship between Fractal Characteristics and Mechanical Properties of Tensile Fracture of Reinforced Concrete Structures
KSCE J Civ Eng
KSCE Journal of Civil Engineering ; 26 , 5 ; 2225-2233
2022-05-01
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Three-dimensional homogenized crack model for tensile fracture of concrete
Springer Verlag | 1999
|The relationship between the fractal dimension and shape properties of particles
Springer Verlag | 2011
|Tensile cracking constitutive model of Steel Fiber Reinforced Concrete (SFRC)
Springer Verlag | 2014
|Tensile cracking constitutive model of Steel Fiber Reinforced Concrete (SFRC)
Online Contents | 2014
|