Prediction of flexural Strength of Concrete Containing Aloe Vera Gel as Admixture using Ibearugbulem’s Regression Method

Abstract

This study examines how aloe vera gel (AVG) affects the flexural strength of concrete when used as an admixture. A mathematical model using the Ibearugbulem's Approach was developed to predict and optimize the flexural strength of AVG-cement concrete. The experimental study assessed both the fresh and hardened properties of AVG-cement concrete at curing intervals of 7, 21, and 28 days. Two concrete mix ratios, 1:1.5:3 and 1:3:5 were employed, each with a water-cement ratio of 0.6. The AVG content varied from 0.5% to 5% by weight of cement. Tests conducted included grain size analysis, specific gravity, workability, setting time, and flexural strength. The results indicate that the 1:1.5:3 mix ratio exhibited better workability than the 1:3:5 ratio. The addition of AVG improved workability and flexural strength. Optimal flexural strength was achieved with 2.0% AVG inclusion at 28 curing days. This study recommends using up to 2.0% AVG by weight of cement at a water-cement ratio of 0.6 for determination of   flexural strength of Aloe vera gel-cement concrete. The mathematical model was validated with the Student's T-test, confirming its reliability.