Analytical model for CFRP strengthened RC columns in humid conditions

R. Rashid, Riyad S Aboutaha

Research output: Contribution to journalConference article

Abstract

Replacement of functionally obsolete structural members is not the answer in sustainable construction market. Sustainable methods should be adopted to increase the load carrying capacity structures/members to increase their service life. In order to increase the load carrying capacity and/or increase the service life of existing reinforced concrete columns, Carbon Fibre Reinforced Polymer (CFRP) composites could be utilized. It provides good confinement to the concrete column core, which enhances the bending and compression strength as well as ductility. This paper presents an analytical concrete confinement model that reflects the effects of humidity on the mechanical properties of CFRP composites, and consequently, the humidity effects on the efficiency of CFRP in strengthening concrete columns. Tensile strength and modulus in humidity, and their effects on the concrete confinement are the two primary parameters that will be investigated. A modified concrete confinement model is developed and presented.

Original languageEnglish (US)
Article numbere537
JournalSustainable Construction Materials and Technologies
Volume2013-August
StatePublished - Jan 1 2013
Event3rd International Conference on Sustainable Construction Materials and Technologies, SCMT 2013 - Kyoto, Japan
Duration: Aug 18 2013Aug 21 2013

Fingerprint

Carbon fibers
Analytical models
Polymers
Concretes
Atmospheric humidity
Load limits
Service life
Structural members
Strengthening (metal)
Composite materials
Ductility
Reinforced concrete
Tensile strength
Elastic moduli
carbon fiber
Mechanical properties

Keywords

  • CFRP
  • Circular concrete columns
  • Confinement
  • Humidity
  • Temperature

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Analytical model for CFRP strengthened RC columns in humid conditions. / Rashid, R.; Aboutaha, Riyad S.

In: Sustainable Construction Materials and Technologies, Vol. 2013-August, e537, 01.01.2013.

Research output: Contribution to journalConference article

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AB - Replacement of functionally obsolete structural members is not the answer in sustainable construction market. Sustainable methods should be adopted to increase the load carrying capacity structures/members to increase their service life. In order to increase the load carrying capacity and/or increase the service life of existing reinforced concrete columns, Carbon Fibre Reinforced Polymer (CFRP) composites could be utilized. It provides good confinement to the concrete column core, which enhances the bending and compression strength as well as ductility. This paper presents an analytical concrete confinement model that reflects the effects of humidity on the mechanical properties of CFRP composites, and consequently, the humidity effects on the efficiency of CFRP in strengthening concrete columns. Tensile strength and modulus in humidity, and their effects on the concrete confinement are the two primary parameters that will be investigated. A modified concrete confinement model is developed and presented.

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