Abstract
| Original language | English |
|---|---|
| Article number | 04016086 |
| Journal | ASCE Journal of Composites for Construction |
| Volume | 21 |
| Issue number | 2 |
| Early online date | 12 Aug 2016 |
| DOIs | |
| Publication status | Published - 1 Apr 2017 |
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Experimental investigation of reinforced concrete T-beams strengthened in shear with externally bonded CFRP sheets. / Foster, Robert; Brindley, Monika; Lees, Janet; Ibell, Timothy; Morley, Chris; Darby, Antony; Evernden, Mark.
In: ASCE Journal of Composites for Construction, Vol. 21, No. 2, 04016086, 01.04.2017.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Experimental investigation of reinforced concrete T-beams strengthened in shear with externally bonded CFRP sheets
AU - Foster, Robert
AU - Brindley, Monika
AU - Lees, Janet
AU - Ibell, Timothy
AU - Morley, Chris
AU - Darby, Antony
AU - Evernden, Mark
PY - 2017/4/1
Y1 - 2017/4/1
N2 - An experimental investigation was undertaken into the effectiveness of unanchored and anchored externally bonded (EB) U-wrapped carbon fibre reinforced polymer (CFRP) shear strengthening for reinforced concrete T-beams at a range of realistic sizes. The T-beam sizes, geometry and reinforcement were chosen to reflect existing slab-on-beam structures with low levels of transverse steel shear reinforcement. Geometrically similar reinforced concrete T-beams were tested across three sizes ranging from 360 to 720 mm in depth and with different amounts of EB CFRP shear reinforcement. The beams were subjected to three-point bending with a span to depth ratio of 3.5. All the beams failed in diagonal shear. The experimental results indicate significant variability in the capacity of unstrengthened control beams, and a number of these control beams showed greater shear capacity than their EB CFRP strengthened counterparts. Greater thicknesses of CFRP reinforcement did not lead to increased shear capacity compared with lesser thicknesses of unanchored or anchored EB CFRP, but anchored EB CFRP did lead to moderate increases in shear capacity compared to both control and unanchored EB CFRP strengthened beams.
AB - An experimental investigation was undertaken into the effectiveness of unanchored and anchored externally bonded (EB) U-wrapped carbon fibre reinforced polymer (CFRP) shear strengthening for reinforced concrete T-beams at a range of realistic sizes. The T-beam sizes, geometry and reinforcement were chosen to reflect existing slab-on-beam structures with low levels of transverse steel shear reinforcement. Geometrically similar reinforced concrete T-beams were tested across three sizes ranging from 360 to 720 mm in depth and with different amounts of EB CFRP shear reinforcement. The beams were subjected to three-point bending with a span to depth ratio of 3.5. All the beams failed in diagonal shear. The experimental results indicate significant variability in the capacity of unstrengthened control beams, and a number of these control beams showed greater shear capacity than their EB CFRP strengthened counterparts. Greater thicknesses of CFRP reinforcement did not lead to increased shear capacity compared with lesser thicknesses of unanchored or anchored EB CFRP, but anchored EB CFRP did lead to moderate increases in shear capacity compared to both control and unanchored EB CFRP strengthened beams.
UR - http://dx.doi.org/10.1061/(ASCE)CC.1943-5614.0000743
U2 - 10.1061/(ASCE)CC.1943-5614.0000743
DO - 10.1061/(ASCE)CC.1943-5614.0000743
M3 - Article
VL - 21
JO - Journal of Composites for Construction
JF - Journal of Composites for Construction
SN - 1090-0268
IS - 2
M1 - 04016086
ER -