NDLI: Influence of overlap configuration on compressive behavior of CFRP-confined normal- and high-strength concrete

Content Provider	Springer Nature Link
Author	Vincent, Thomas Ozbakkaloglu, Togay
Copyright Year	2015
Abstract	This paper presents the findings of an experimental investigation on the effect of overlap configuration on carbon fiber-reinforced polymer (CFRP)-confined normal- and high-strength concrete. A total of 33 specimens were prepared and tested under monotonic axial compression. All specimens were cylinders with 152 mm diameter and 305 mm height and confined by CFRP tubes. Two different concrete mixes were examined, with average compressive strengths of 52.0 and 84.7 MPa. The effect of overlap configuration was examined by manufacturing the specimens with different properties at the overlap region including overlap length, continuity and distribution. Axial and lateral behavior was recorded to observe the axial stress–strain relationship and hoop strain behavior for concentric compression. Ultimate axial and lateral conditions are tabulated and stress–strain curves have been provided. Detailed plots of hoop strain development and lateral confinement pressure at ultimate are presented. The results indicate that FRP overlap length has no significant influence on strain enhancement ratio (ε $_{cu}$ /ε $_{co}$), but an increase in overlap length leads to a slight increase in strength enhancement ratio (f′ $_{cc}$ /f′ $_{co}$), with these observations equally applicable to both continuously and discontinuously wrapped specimens. The results also indicate that continuity of the FRP sheet in the overlap region has some influence on the effectiveness of FRP confinement. Furthermore, it was observed that the distribution of FRP overlap regions for discontinuously wrapped specimens can influence the axial compressive behavior of these specimens in certain overlap configurations. Finally, it is found that the distribution of lateral confining pressure around specimen perimeter becomes less uniform for specimens with higher concrete strengths and those manufactured with overlap regions that are not evenly distributed.
Starting Page	1245
Ending Page	1268
Page Count	24
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	49
Issue Number	4
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-03-05
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Concrete High-strength concrete (HSC) Fiber-reinforced polymer (FRP) Columns Confinement Overlap Hoop strain Confinement pressure Structural Mechanics Materials Science Theoretical and Applied Mechanics Operating Procedures, Materials Treatment Civil Engineering Building Materials
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Hoop strains in FRP-confined concrete columns: experimental observations

FRP–HSC–steel composite columns: behavior under monotonic and cyclic axial compression

Concrete columns confined with CFRP wraps

Adequately FRP confined reinforced concrete columns under axial compressive monotonic or cyclic loading

New formulation for compressive strength of CFRP confined concrete cylinders using linear genetic programming

FRP confinement of wall-like reinforced concrete columns

Modeling the confined compressive strength of CFRP-jacketed noncircular concrete columns using artificial intelligence techniques

Substandard reinforced concrete members subjected to compression: FRP confining effects

Development of a confined model for rectangular ordinary reinforced concrete columns

Influence of overlap configuration on compressive behavior of CFRP-confined normal- and high-strength concrete

Similar Documents

Hoop strains in FRP-confined concrete columns: experimental observations

FRP–HSC–steel composite columns: behavior under monotonic and cyclic axial compression

Concrete columns confined with CFRP wraps

Adequately FRP confined reinforced concrete columns under axial compressive monotonic or cyclic loading

New formulation for compressive strength of CFRP confined concrete cylinders using linear genetic programming

FRP confinement of wall-like reinforced concrete columns

Modeling the confined compressive strength of CFRP-jacketed noncircular concrete columns using artificial intelligence techniques

Substandard reinforced concrete members subjected to compression: FRP confining effects

Development of a confined model for rectangular ordinary reinforced concrete columns

Influence of overlap configuration on compressive behavior of CFRP-confined normal- and high-strength concrete