An Appropriate Relation between Strength Characteristics & Combined NDT'S of GPC

In present days the demand of cement (OPC) is growing for satisfying the need of improvement of infrastructure facilities. OPC production releases greater amount of carbon dioxide to the environment, it's far harmful to the human health and additionally pollute environment. Consequently, its miles essential to find alternatives to make the concrete surroundings friendly. On this respect, Davidovits (1988) proposed an alternative binder for the concrete era and it indicates a terrific results. Those binders are produced through an alkaline liquid reacts with the silica (Si) and aluminum (Al) present inside the source materials. The technology proposed by way of the Davidovits is usually called as Geo-polymers or Geo-polymer technology. This paper gives the study on Mechanical houses of GPC of class f fly ash (FA-50%) & GGBS (50%) based GPC the use of silica sand, copper slag and granite slurry as sand replacement at unique stages (0%, 10%, 20% & 30%).In the present investigation to study the compressive strength and predict the compressive strength by using Rebound Hammer and Ultrasonic Pulse Velocity at different curing periods after 7, 28 & 90 days curing at ambient room temperature. By using Regression analysis formed the equations Silica Sand from 0% to 30% compressive strength , Rebound number and Ultrasonic Pulse Velocity values increased and form the varies equations and also copper slag and Granite slurry 0% to 30% compressive strength, Rebound number and Ultrasonic Pulse Velocity increased and formed the various equations. By using Regression analysis and available data as compressive strength, Rebound number and Ultrasonic Pulse Velocity formed the various equations at different replacement levels.