Effect and Curing Sensiticity Index of Different Curing Methods on Compressive Strength of Normal Concrete

Abstract

This research was to study the effects and Curing sensitivity Index (CSI) of different curing methods for compressive strength of normal concrete, which the water-cement ratio was designed to 0.45 0.57 and 0.67.
The specimens of experimental were cured by six different curing methods.
The curing regime employed were: water-submerged,  burlap curing,  moist sand curing, spray curing and air curing.  After that, it was tested for compressive streng that  7 14  and  28 days.

            The results showed that curing influenced the development of compressive strength of concrete. The curing method can be sorted from maximum to the minimum of compressive strength of concrete as follows: water-submerged, burlap curing, moist sand curing, spray curing and air curing. The Curing Sensitivity Index (CSI) of water-submerged and burlap curing were the least, while the air curing method is most valuable.
The multiplication parameters of each curing method can be determined.  From the equation of the logarithm of Y = A ln (x) + B, the variance of the R-Squared (R²) variable is high, which means that the equation used is suitable for the data.

Keywords: curing, compressive strength, curing sensitivity index, multiple

               parameter,  logarithm