Behaviour of reinforced concrete beams

Abstract

In the preceding chapters, we have discussed the properties of concrete, specifically focussing on the material behaviour of SCM and recycled coarse aggregates. The primary challenge in incorporating this sustainable recycled material is to fulfil the performance requirements of structural elements subjected to flexural, shear, and compression. The behaviour of reinforced concrete RAC beams under bending and shear is discussed in this chapter. Load carrying capacity, failure pattern and effects of material parameters are examined for fly ash incorporated 100% RAC beams. We evaluate the suitability of current code provisions for natural aggregate concrete to be used in RAC with fly ash beams. Furthermore, reliability of structural elements is evaluated, considering the variabilities associated with these recycled materials. Necessary modifications are suggested to achieve the same level of safety as conventional concrete.