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ABSTRACT
The study focuses on investigating the strength development and rheology of concrete using different grades of cement. Concrete is one of the most widely used construction materials, and the choice of cement grade significantly affects its performance and properties. The study begins with an extensive literature review to establish a foundation for the research and identify any research gaps in this area. A range of cement grades, including ordinary Portland cement (OPC), Portland pozzolana cement (PPC), and specialty cements, are selected for investigation. Concrete mix designs are developed, maintaining consistency in other materials and a constant water-to-cement ratio across the mixes. It is evident that when high strength of concrete is needed in a construction, using higher grade of cement is the best choice. From the laboratory value it is seen that M15 at 7days, the percentage increase of concrete strength at grade 52.5𝑁 𝑚𝑚2 ⁄ against 32.5𝑁 𝑚𝑚2 ⁄ is seen to be 14.23% and against 42.5𝑁 𝑚𝑚2 ⁄ is 8.89%. For M15 at 28days the percentage increase of concrete strength of 52.5𝑁 𝑚𝑚2 ⁄ against 32.5𝑁 𝑚𝑚2 ⁄ is seen to be 11.21% and against 42.5𝑁 𝑚𝑚2 ⁄ is 10.78%. From the laboratory value it is seen that M20 at 7days, the percentage increase of concrete strength at grade 52.5𝑁 𝑚𝑚2 ⁄ against 32.5𝑁 𝑚𝑚2 ⁄ is seen to be 30.35% and against 42.5𝑁 𝑚𝑚2 ⁄ is 14.23%. For M20 at 28days the percentage increase of concrete strength of 52.5𝑁 𝑚𝑚2 ⁄ against 32.5𝑁 𝑚𝑚2 ⁄ is seen to be 10.51% & against 42.5𝑁 𝑚𝑚2 ⁄ is 7.01%. The study concludes that for higher strength of concrete needed, the higher the grade of cement required.
