Abstract
Stress-strain characteristics of concrete confined by carbon fiber sheet were investigated through uniaxial compression test. Experimental variables adopted in this study were amount, elastic modulus, tensile strain capacity of carbon fiber sheet, concrete strength and sectional shape of specimens.
Main test results obtained are as follows.
(1) Two types of stress-strain curves of confined concrete with carbon fiber sheet are observed. One is ordinary curve having peak point and the other is curve showing only monotonous increment of stress without peak point.
(2) A new model for the stress-strain curve which can express the two types of curves is proposed, and equations to estimate characteristics required for expression of the curves are derived.
(3) Comparisons between experimental results and calculated ones show that the model estimate the test results with good enough agreement.
