Home >>
ABSTRACT
An investigation into the effect of different curing method son concrete grades 20, 25, and 30 were investigated in this study. Different curing methods are usually adopted to evaluate the compressive strength of a concrete. It is a well-known fact that concrete product after casting achieved their design strength through proper curing. Curing requirement can differ from one concrete grade to another. This work is aimed at identify the most appropriate curing method of concrete grade. The compressive strength of three (3) different curing methods (sprinkling, immersion, and covering method on each grade has been investigated with the aim of finding the suitable curing method for each grade of concrete. From the experimental observation, it is found that the ponding method has the highest strength compared to the covering and sprinkling method. Therefore; the ponding method proved to be the suitable method for the entire concrete grade counseled in the research. Also Scanning Electron Microscopy SEM analysis result revealed that concrete grade 20N/mm2 achieved the highest hydration when cured using immersion method than covering and sprinkling. Therefore the study recommended that curing concrete grade 20, 25, & 30N/mm2 by ponding (immersion) method is the best.
Keywords: Curing, Concrete Grade, Compressive Strength, Concrete
Full Text
