Experimental Investigation on Mechanical Properties of High-Performance Concrete and Effect of Modulus of Elasticity and Poisson’s ratio

Abstract

This experimental study examines the mechanical properties of High-Performance Concrete (HPC) incorporating a substantial proportion of mineral admixtures. Using high-performance concrete in the construction of multi-story structures provides enough benefits to justify consideration as a practical and desirable choice. The significance of research contributions in providing technical exposure to this minor component will become clear as the use of HPC grows in popularity. The method proposed by P. C. Aitcin is used to calculate the mixed proportion of HPC 60 MPa to 80 MPa. Studies are done on the characteristics of the various ingredients used to make HPC. Thirteen concrete mix compositions were evaluated thoroughly, including mechanical properties such as compressive strength, split tensile strength, modulus of elasticity, and flexural strength, as well as an assessment of significant properties. The outcomes of this investigation affirm that a reduced water-to-binder ratio (w/b) correspondingly leads to enhanced mechanical properties. For the purpose of examining the physical properties of various concrete grades, a total of 39 cubes, 39 cylinders, and 39 beams were cast. HPC cubes were tested on a compression testing machine with a loading capacity of 3000 KN, while cylinders and beams were tested on a universal testing machine with a loading capacity of 1000 KN. The average compressive strength for HPC M60 to M80 is 61.46 MPa, 71.35 MPa, and 80.10 MPa, respectively. Elastic Modulus values obtained in the present study range from 40 and 50 GPa. The findings of the present study suggest that an enhancement in concrete strength correlates with a reduction in the average value of Poisson's Ratio. Overall, the choice to use HPC for high rise structure offers sufficient advantages to benefits consideration as a cost-effective and attractive alternative. The significance of research contributions in offering proper guidance on this new concrete material becomes clear once the material of HPC becomes widely used.