Abstract
Externally bonded glass and carbon fiber reinforced polymer composites are increasingly being used to upgrade, repair, and rehabilitate steel reinforced concrete structures such as beams and slabs. The effectiveness of the bonded composites depends on the integrity of the composite/concrete bond over years of exposure to sustained loads and various weather conditions. The present investigation was conceived with the aim of characterizing bond behavior over a long period of time in realistic indoor and outdoor environments, with sustained loading. Plain concrete beams were externally reinforced with wet-layup glass and carbon composites and subjected to sustained flexural loads for 6 years. Then, the beams were loaded to failure while strains on the composite were recorded using resistance strain gages and full-field digital image correlation. The results indicate that ultimate bond strength is strongly correlated with changes in the concrete strength. This finding is consistent with bond failures being mainly controlled by the concrete rather than the composite material. Glass composite specimens generally had less debonding prior to failure, along with higher strength concrete. Furthermore, it appears that the sustained loading itself had little effect on the ultimate bond strength.
| Original language | English (US) |
|---|---|
| Title of host publication | Advancement of Optical Methods in Experimental Mechanics - Proceedings of the 2015 Annual Conference on Experimental and Applied Mechanics |
| Editors | Luciano Lamberti, Ming-Tzer Lin, Helena Jin, Sanichiro Yoshida |
| Publisher | Springer New York LLC |
| Pages | 47-56 |
| Number of pages | 10 |
| ISBN (Print) | 9783319224459 |
| DOIs | |
| State | Published - Jan 1 2016 |
| Event | Annual Conference on Experimental and Applied Mechanics, 2015 - Costa Mesa, United States Duration: Jun 8 2015 → Jun 11 2015 |
Publication series
| Name | Conference Proceedings of the Society for Experimental Mechanics Series |
|---|---|
| Volume | 3 |
| ISSN (Print) | 2191-5644 |
| ISSN (Electronic) | 2191-5652 |
Other
| Other | Annual Conference on Experimental and Applied Mechanics, 2015 |
|---|---|
| Country | United States |
| City | Costa Mesa |
| Period | 6/8/15 → 6/11/15 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
- Computational Mechanics
- Mechanical Engineering
Cite this
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DIC strain analysis of FRP/concrete bond after sustained loading. / Bakis, Charles E.; Salasky, Heather; Artun, Kivanc; Lopez, Maria M.; Whitaker, Marcus B.; Boothby, Thomas E.
Advancement of Optical Methods in Experimental Mechanics - Proceedings of the 2015 Annual Conference on Experimental and Applied Mechanics. ed. / Luciano Lamberti; Ming-Tzer Lin; Helena Jin; Sanichiro Yoshida. Springer New York LLC, 2016. p. 47-56 (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 3).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - DIC strain analysis of FRP/concrete bond after sustained loading
AU - Bakis, Charles E.
AU - Salasky, Heather
AU - Artun, Kivanc
AU - Lopez, Maria M.
AU - Whitaker, Marcus B.
AU - Boothby, Thomas E.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Externally bonded glass and carbon fiber reinforced polymer composites are increasingly being used to upgrade, repair, and rehabilitate steel reinforced concrete structures such as beams and slabs. The effectiveness of the bonded composites depends on the integrity of the composite/concrete bond over years of exposure to sustained loads and various weather conditions. The present investigation was conceived with the aim of characterizing bond behavior over a long period of time in realistic indoor and outdoor environments, with sustained loading. Plain concrete beams were externally reinforced with wet-layup glass and carbon composites and subjected to sustained flexural loads for 6 years. Then, the beams were loaded to failure while strains on the composite were recorded using resistance strain gages and full-field digital image correlation. The results indicate that ultimate bond strength is strongly correlated with changes in the concrete strength. This finding is consistent with bond failures being mainly controlled by the concrete rather than the composite material. Glass composite specimens generally had less debonding prior to failure, along with higher strength concrete. Furthermore, it appears that the sustained loading itself had little effect on the ultimate bond strength.
AB - Externally bonded glass and carbon fiber reinforced polymer composites are increasingly being used to upgrade, repair, and rehabilitate steel reinforced concrete structures such as beams and slabs. The effectiveness of the bonded composites depends on the integrity of the composite/concrete bond over years of exposure to sustained loads and various weather conditions. The present investigation was conceived with the aim of characterizing bond behavior over a long period of time in realistic indoor and outdoor environments, with sustained loading. Plain concrete beams were externally reinforced with wet-layup glass and carbon composites and subjected to sustained flexural loads for 6 years. Then, the beams were loaded to failure while strains on the composite were recorded using resistance strain gages and full-field digital image correlation. The results indicate that ultimate bond strength is strongly correlated with changes in the concrete strength. This finding is consistent with bond failures being mainly controlled by the concrete rather than the composite material. Glass composite specimens generally had less debonding prior to failure, along with higher strength concrete. Furthermore, it appears that the sustained loading itself had little effect on the ultimate bond strength.
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UR - http://www.scopus.com/inward/citedby.url?scp=84952362238&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-22446-6_6
DO - 10.1007/978-3-319-22446-6_6
M3 - Conference contribution
SN - 9783319224459
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 47
EP - 56
BT - Advancement of Optical Methods in Experimental Mechanics - Proceedings of the 2015 Annual Conference on Experimental and Applied Mechanics
A2 - Lamberti, Luciano
A2 - Lin, Ming-Tzer
A2 - Jin, Helena
A2 - Yoshida, Sanichiro
PB - Springer New York LLC
ER -