Ultimate Strength and Fatigue Life of Concrete Elements Reinforced with Carbon Fiber Sheet Based on Continuum Damage Mechanics

Abstract

Continuum Damage Mechanics (C.D.M) was applied to evaluate the mechanical behavior of concrete structural elements reinforced with carbon fiber sheet (CF-sheet) under quasi-static and cyclic loading. A constitutive equation for elasto-plastic damageable solids is formulated by using Drucker-Prager’s equivalent stress and identified by the uniaxial compressive and tensile experimental results for concrete, tensile results for CF-sheet. And　then finite element analyses are carried out  for  real-scale cantilever reinforced concrete slabs and concrete blocks with CF-sheet. Finally It was concluded that the application of C.D.M for concrete structural ultimate strength and fatigue durability comparing the experimental data and the calculation by 2-dimensional finite element method  (F.E.M) was very useful