This research presents the results of an experimental
study to look into the effects of intermediate anchors on end anchored
CFRP laminate strengthened beams. Three beams of 125x250x2300 mm in dimensions
were cast. Out of these, one beam was left un-strengthened and acts as
the control beam and another two beams were strengthened with CFRP laminates.
Both strengthened beams were end anchored to prevent premature end peeling.
From the strengthened beams, one beam was intermediate anchored in the
shear span to prevent premature shear failure. The anchorage lengths provided
by the end and intermediate anchors were of 200 and 40 mm, respectively.
The results showed that the intermediate anchors in shear span zone prevented
premature shear failure. Result also showed that the strengthened beams
with intermediate anchors had significant effects on failure loads, failure
modes, strain characteristics, deflections and cracking patterns over
the end anchored strengthened beam.
M.Z. Jumaat and A. Alam, 2009. Effects of Intermediate Anchors on End Anchored Carbon Fibre Reinforced Polymer Laminate Flexurally Strengthened Reinforced Concrete Beams. Journal of Applied Sciences, 9: 142-148.