How high are the yield and tensile strengths of tnis HT2350 steel? In the US there is rebar steel Grade 100 (fy=690 MPa) in use. Some benefits and challenges you may find in this presentation: http://www.fdot.gov/structures/GFRPRebarWorkshop/HSR_and_FRC-2016.pdf Generally the problems are lower material ductility, greater lap length demands, crack control issues.
Your question is not quite clear to me! so far I understood- your question is "if very high strength steel is used in RCC as flexural reinforcement than can we avoid shear or bond reinforcement?"
If this was the question than it is very interesting one. The existing mechanics of RCC can't give you the answer. Because the effect of flexural reinforcement is actually ignored in shear calculation.
But you can make some tests in lab to see the % of variation for high strength steel comparing to normal rebars.
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