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Concrete and Reinforced Concrete Elements Strengthened with HPFRCC
Mykolas Daugevičius,Juozas Valivonis 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.8
The study analyses the behaviour of concrete and reinforced concrete columns strengthened with a High-performance FiberreinforcedCementitious Concrete (HPFRCC) jacket. For that purpose, experimental and nonlinear numerical analysis wasaccomplished. The development of deformations was divided into separate stages at each of which the behaviour of differentmaterials was highlighted. Consequently, an analytical approach to load carrying capacity was proposed. The approach evaluates theelastic, elasto-plastic and pure plastic behaviour of a separate material. According to the proposed method, a possibility of predictingthe stiffness of the strengthened element at the desired load level can be considered. The experimental results of all tested columnswere compared with numerical results. A comparison of experimentally and numerically predicted deformations showed goodcoincidence only up to a particular load level. When the decomposition such us cracking of the material starts, inappropriatecoincidence can be noticed.