Fly Ash Case Study

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FLEXURAL BEHAVIOUR OF POTASSIUM BASED GEOPOLYMER CONCRETE. D.Vasuki1, A.Kalaivani2 1PG Student, Department of Civil Engineering – Paavai Engineering College. 2Assistant. Professor, Department of Civil Engineering – Paavai Engineering College. ABSTRACT The global usage of cement occupies the second position next to water. As the development of country and infrastructure, their materials needed get increased. Meanwhile for the development of the infrastructure concrete plays the major role. In concrete the major material or ingredient is ordinary Portland cement (OPC). OPC creates two major problems at the time of production; the emission of CO2 due to calcination of limestone and the usage of extensive amount of energy. On the other hand, fly ash is the material which is emitted from the power plants at the time of electricity production…show more content…
1. As a new material to the Geopolymer concrete the paper sludge ash can be used as a replacement material to flyash and cement. 2. Bond strength test results were conducted on cylindrical specimens of size 100mm dia x 200mm height. From the Results we can see that the increase in percentage of paper sludge ash 10% increases the bond strength and then it will be decreased. The maximum value of bond strength is 8.65 N/mm2 in hot air oven curing. 3. From the flexural behavior of GPC beam, among three different curing condition viz. Hot air oven curing, Sunlight curing and ambient curing, the 100% FA based GPC produce higher flexural strength of 24.97 N/mm2 under hot air oven curing compare to other 4. On adding 10% PSA into the FA based GPC beam, the flexural strength is more or less same among three different curing condition in the following order HAOC >SLC >AC 5. By using PSA into FA based GPC the concrete can be cured even under ambient temperature which produce flexural strength of 22.08 N/mm2 (than greater than ambient cured FA based GPC

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