Results of tests in nine
reinforced concrete deep beams, simply supported and submitted to two top point
loads
(seven strengthened in shear) are shown. The seven strengthened beams
were 800 x 150 x 1600 mm with fc around 50 MPa, designed with insufficient
shear reinforcement and loaded previously until service load. The main
strengthened variables were the type, position and amount of the reinforcement
positioned. The
strengthening reinforcement were positioned with special mortar
in ducts sawn on the surface of the beam. The results showed that the
strengthening technique adopted worked properly without any problem of
anchorage of the glued reinforcement. Besides this, the strengthened beams
reached considerable higher ultimate loads and behaved very well in comparison
with the two reference ones.