EVALUATION OF THE PERFORMANCE OF CONCRETE STRUCTURES STRENGTHENED WITH FRP COMPOSITES
Abstract eng: Linear elastic stress analysis was used to investigate the state of stress in double lap-strap test (DLST) specimens. The DLST specimens are constructed by bonding carbon fiber reinforced polymer (CFRP) to concrete prisms with epoxy adhesive. FEM was performed to investigate the effects of the CFRP thickness, overlap length, and temperature on the performance of the graphite/epoxy composite/concrete interface. Results indicate that the shear modulus has the greatest influence on the overall behavior of the double lap-strap specimen. Analysis of the CFRP to concrete interface showed that the resulting stress distribution is dependent on CFRP stiffness and CFRP thickness. Temperature dependent Critical Strain Energy Release Rate Gcr of the interface is obtained using crack closer model of the delaminating composite and experimental results.
Contributors:
Publisher:
Columbia University in the City of New York
Conference Title:
Conference Title:
15th ASCE Engineering Mechanics Division Conference
Conference Venue:
New York (US)
Conference Dates:
2002-06-02 / 2002-06-05
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2014-11-19, last modified 2014-11-19
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