Open AccessCracking and strength of reinforced concrete structures in flexure strengthened with carbon fibre laminates
Author(s) -
Juozas Valivonis,
Tomas Skuturna
Publication year - 2007
Publication title -
journal of civil engineering and management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.529
H-Index - 47
eISSN - 1822-3605
pISSN - 1392-3730
DOI - 10.3846/jcem.2007.7695
Subject(s) - cracking , stiffness , materials science , structural engineering , curvilinear coordinates , reinforcement , tension (geology) , moment (physics) , composite material , ultimate tensile strength , stress (linguistics) , compression (physics) , engineering , mathematics , linguistics , philosophy , geometry , physics , classical mechanics
The article presents the analysis of the cracking moment and the strength of beams reinforced with external carbon fibre. Experimental research of beams strengthened in this way has been carried out. Three different methods of anchoring external reinforcement were applied to strengthen the beams. The influence of anchorage on the cracking moment and the strength of the beams has been defined. Design methods for defining the cracking moment and the strength have been presented. The design procedure for defining the cracking moment evaluates the curvilinear stress diagrams of concrete under tension and compression. The design procedure for defining the strength of the structures evaluates the stiffness of the contact between the carbon fibre and the concrete. The design results are provided. Comparative analysis of the experimental and the theoretical results has been performed.