COMPARATIVE STRENGTH ANALYSIS OF CONCRETE USING HIGH ALUMINA CEMENT AND PORTLAND LIMESTONE CEMENT

This study investigates and compares the strength characteristics of concrete incorporating High Alumina Cement (HAC) and Portland Limestone Cement (PLC). Both chemical and physical tests were performed on HAC and PLC, along with additional physical tests to assess aggregate properties. Preliminary testing was conducted in accordance with relevant standards, yielding satisfactory results. Slump tests indicated that the workability of both HAC and PLC concretes fell within the S1 classification. A comprehensive evaluation of compressive, split tensile, and flexural strength was conducted on concrete specimens cured for 3, 7, 14, 21, 28, and 56 days. The results demonstrated that HAC concrete significantly outperformed PLC concrete, with average strength increases of 38% in compressive strength, 15% in split tensile strength, and 21% in flexural strength. Additionally, HAC concrete exhibited 4% lower water permeability than PLC concrete, indicating greater durability. These findings suggest that HAC is a superior option for structural applications requiring rapid strength gain and reduced permeability. Therefore, HAC is recommended for construction applications requiring early load-bearing capacity and improved durability.