Table 5 Failures of tested specimens

I

Failed at rod-substrate concrete interface accompanied by splitting of concrete cover along bonded length

R7ØN, R10ØN, R15ØN

II

Failed at epoxy-concrete interface accompanied by splitting and shearing of concrete body

R7ØE, R10ØE

III

Failed at epoxy-concrete interface then hair split in epoxy then rupture of the concrete at the block edge without splitting of concrete body

R15ØE, S7ØE

IV

Failed at the concrete surrounding the groove accompanied or not by split in epoxy

S0, S-1n5, S-2n5, S-1n10,

S-1r, S-2r, S-3r, S-2b, S-3b,

S-4b, S-1s, S-2s, S-3s