The basis for the flexural strength design methodology of concrete member with non-metallic reinforcement is the balanced reinforcement ratio [rho].
--Because of the prestressing of GFRP reinforcement, high strength of GFRP rebar might be used more efficiently, when the reinforcement ratio is greater than the balanced reinforcement ratio.
c) It is assumed a value for the neutral axis depth x, which should vary incrementally from the limit of the domains 3 and 4 ([x.sub.34] = 0.628.d) to the limit of the domains 2 and 3 ([x.sub.23] = 0.259.d), since it is intended to obtain a balanced reinforcement
. In this way, it is possible to obtain an economic design for the ultimate limit state, with the yielding of tensile reinforcements and the rupture of the compressed concrete;
Tri-Ply reportedly provides a balanced reinforcement
that lies flat during processing.
Table 4 shows that, with exception for Beam E-0.30-1.1-0, the orientation of the cracks remains almost unchanged, being around 45.1[degrees] and 46.3[degrees], being very close to the predicted theoretical value of 45[degrees] (this would correspond to a beam with balanced reinforcements