Investigation Of Flexural Strength Of M25 Grade Concrete Using Quartz Sand And Compare With Conventional Concrete

Abstract

Aim: The study presented in this report aims to investigate the flexural strength of M25 grade concrete using 5% quartz sand as a replacement for conventional fine aggregate. Materials and Methods: In this research, a total of 20 concrete specimens were made and divided into two groups of ten each. Cement, fine aggregates, coarse aggregates, water, and quartz sand were the materials utilised for the investigation. The cement used was 43-grade Ordinary Portland Cement (OPC). Fine aggregates were natural sand whereas coarse aggregates were broken granite. The statistical analysis of the data was conducted with the software G-power 0.8, a 95% confidence interval, an alpha value of 0.05, and a beta value of 0.2. The Flexural strength was evaluated by comparing M25 grade concrete (N=10 samples) to Conventional concrete (N=10 samples). Results: The findings show that the flexural strength of M25 grade concrete made with 5% quartz sand was higher than that of traditional M25 grade concrete. On average, the flexural strength of the M25 grade concrete with 5% quartz sand was 12 MPa, while the average flexural strength of traditional M25 grade concrete was 9 MPa, with a significance level of p=0.001, indicating a high level of confidence in the results. Conclusion: The conclusion of the study is that replacing a portion of the fine aggregates in M25 grade concrete with 5% quartz sand can enhance its flexural strength.