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The current economic pressures on utilities to extend a service life of structural concrete mean that concrete structures may have to perform safety functions for a time period significantly greater than their initial design life. However, the structural design and construction requirements for concrete structures with non-metallic reinforcement are very unique and not complete. This paper aims to provide experimental investigations of concrete beams reinforced with GFRP (glass fibre reinforced polymers) based on flexural strength. Both reinforced and prestressed concrete beams have been tested. Together with the strength characteristics, the effect of pre-stress on deflection and cracking distribution has been mainly governed by the stress–strain laws of reinforced concrete. The work is resulted in design code equations for the prediction of the ultimate flexural strength. The influence of the effect of prestressing on the deflection and cracking was analysed.

engineering structures and technologies

EXPERIMENTAL ANALYSIS ON FLEXURAL BEHAVIOUR OF CONCRETE BEAMS WITH GFRP REINFORCEMENT / LENKIAMŲJŲ ELEMENTŲ, ARMUOTŲ STIKLO PLUOŠTO ARMATŪRA, ELGSENOS STATMENAJAME PJŪVYJE EKSPERIMENTINIS TYRIMAS