CRITICAL DEPTH OF NORMAL CRACKS IN REINFORCED CONCRETE BEAMS OF RECTANGULAR CROSS-SECTION

Author:

Jokūbaitis Vidmantas1,Juknevičius Linas1

Affiliation:

1. Department of Reinforced Concrete and Masonry Structures, Faculty of Civil Engineering, Vilnius Gediminas Technical University, Saulėtekio al. 11, LT-10223 Vilnius, Lithuania

Abstract

The evaluation of stress state of longitudinal tensile reinforcement is highly important while examining the technical state of under-reinforced concrete structures. The appearance of yield stress in tensile reinforcement could be treated as the start of incipient failure of the flexural structure. The state of tensile reinforcement of flexural reinforced concrete structures could be examined by observing the properties of normal cracks. This paper presents the analysis of the relationship between various parameters of a normal crack during its development. Some elements of fracture mechanics are used for analysis of stress state in flexural reinforced concrete members. The analytical data are compared to the experimental results, and the adjustment functions are proposed for flexural beams of certain cross section shape, dimensions and reinforcing ratio.

Publisher

Vilnius Gediminas Technical University

Subject

Strategy and Management,Civil and Structural Engineering

Reference26 articles.

1. Alam , S. Y. ; Lenormand , T. ; Loukili , A. ; Regoin , J. P. 2010 . Measuring crack width and spacing in reinforced concrete members , inProc. of the 7th International conference on Fracture Mechanics of Concrete and Concrete Structures, 23–27 May, 2010 , Korea , Seoul , 377 – 382 .

2. Concrete fracture models: testing and practice

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4. Mixed-mode crack propagation through reinforced concrete

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