Research in usage of fly ashes in the production of interlocking concrete pave

Fly ash is a waste material which is produced in the thermal power plants by burning coal. This side product can be used as pozzolanic material in the concrete.Fly ash has started to be used in concrete production in certain amounts.Fly ashes are used as pozzolanic ingredients or filler materials. Increasing the usage areas of the fly ash is important for both economical and environmental reasons.The usage of the interlocking concrete pave has been increased recently. It is used in the areas in local roads and pavements, parking sites, commercial centers and industrial areas, which are exposed to intensive usage. Production of the concrete pave is a wide area for the consumption of the FA. The usage of the FA in the production concrete pave is a more high quality production, more economical and a more environmentally friendly approach.In this study, fly ash gathered from three different thermal power stations has been used as a substitude to cement in 10-20-30-40 % ratios.Half of the produced paves has been used as control example.The other half has been exposed to salt cure.The splitting tensile strenght and water absorbtion characteristics of the pave have been determined.Generally, the examples with 10-20% substitude, had outcomes similar to the witness example.While the salt cure has improved the tensile strenght in early ages, it has reduced it in older ages.In other physical properties, under exposure to salt cure, the examples with the fly ash had better outcomes.