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Theodorou (2008) conducted a series of flexural tests on steel reinforced RAC beam in an attempt to compare the energy absorption capacity of the fly ash replacement. Similar levels of fly ash used in the compressive strength cylinders were used in the preparing the flexural beams. All of the specimens testing was performed after a 90 day curing period and were tested for peak load at “first crack”. 16% fly ash specimen recorded the lowest energy absorption values, and the 40% fly ash specimen recorded the highest values. Split tensile testing on cylindrical specimen made with the same mix designs was also conducted and it was found that the average maximum tensile strength increased with the inclusion of fly ash. Figure 1 shows the variation of split tensile strength as the amount of fly ash in increased % FA Figure 1 Split tensile strength of specimen with different fly ash content Other researchers also proved that fly ash specimen show higher compressive strengths than non-fly ash specimen given the appropriate curing time. Fraser (2008) compared RAC specimen with no fly ash with those in which fly ash was incorporated and cured for 28 and 90 days. The results demonstrated that fly ash 5PDF Image | HDPE FIBER REINFORCED RECYCLED AGGREGATE CONCRETE
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