Impact strenght of pozzolans materials concrete by ternary blends system
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This research study to the effect of pozzolanic materials by replacement cement by fly ash and Meta kaolin, which affect the mechanical and physical properties of concrete. According to Standard test such as Compressive strength flexural strength and impact strength. The replacement cement by fly ash was 15%, 30% and 45%, respectively, and replacement cement by meta-kaolin was 10%, 15% and 20%, respectively. The results showed that the compressive strength of concrete at 28 days. When considered ratio w/b = 0.40 was higher than w/b = 0.45 all ingredient. The replacement cement by fly ash was the most effective. 10% (375 ksc), 15% (362 ksc) and 20% (354 ksc) respectively. The replacement cement by meta-kaolin gave the highest flexural strength of 41 ksc higher than control mixed concrete and all other ingredient. At the age of 28 days, The replacement cement by meta-kaolin was 10 percent result to the highest impact strength was 11 joule, which was close to that of fly ash by 30 percent give value was 110 joules and more than replacement cement by meta-kaolin was 15% (100 joule) and 20% (95 joule). It can be concluded that the increase in meta-kaolin content result to compressive strength will reduce, flexural strength and impact strength. As the amount of fly ash increased, the compressive strength increased. , flexural strength and impact strength Increased value.
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