The article deals with the main results of experimental studies of strength, crack resistance and informational content of the diagonal poison open up and say ahh t shirt and normal sections of common damaged and brought to the critical state of the first group r.c.- beams reinforced with carbon fibre sheet in the lower tensioned zone and on the support area.
According to the adopted methodology, an experiment was conducted on the four-factor three-level Box-Benkin B4 plan.The 33 14.50 r24 average relative deformation values of the compressed concrete in the middle part of beams after their stabilization under low-cycle static loading have been evaluated.Tests of prototypes were carried out according to the scheme of single-track free-beam, alternately loaded from above, then from below by two concentrated forces without changing its position.