The Use of Calcium Oxide and Micro Fly Ash and The Impact of The Pozzolans on The Physical Properties and Carbonation of Concrete

In this study 11 different combinations of micro fly ash and calcium oxide were replaced instead of cement. Fly ash with 5%, 10%, 15% and 20% of cement and calcium oxide with 5%, 10%, 15% and 20% of cement and then a combination with fixed 15% fly ash and 5%, 10% and 15% of calcium oxide are replaced instead of cement. Then 108 sample of cubic concrete have been prepared and samples at the ages of 3, 7 and 28 days were applied compression strength and ultra sound tests and results were recorded and compared.

Keywords:

Fly ash , Calcium oxide , Compression strength test , Ultra sound test , Pozzolan