Assessment of the Mechanical Property of Hybrid Fibre Concrete with the Optimal Mix

Abstract

When two or more distinct types of fibres are used in conjunction with a combined matrix to produce a composite  material known as a hybrid, this type of material can be referred to as a hybrid composite. This hybrid  material represents the benefits of each of the individual components used in the fibres. An optimized mix  containing hybrid fibres was produced through parametric research on the effects of varying fibre contents  on the mechanical properties of the concrete structure, specifically the compressive strength, shear strength,  and toughness. The mechanical qualities of the concrete construction were shown to benefit from these  modifications. Additionally, it was shown that when utilizing various fibre compositions, the combination of  glass and polypropylene fibre produces the best outcomes in terms of compressive strength and toughness.  Hybrid fibres were added to the concrete mix at various ratios, but they didn’t replace any other ingredients  from the M30 mix designs. In this investigation, different amounts of fiber-containing cement (0.5%, 1%,  1.5%, and 2%) were added and tested individually in a compression testing machine with a 2000-ton capacity  after 7 and 28 days of curing. The readings were taken to determine the optimal percentage of fibers to add to  concrete, aiming to increase the concrete’s compressive strength significantly. Additionally, research has been  conducted to determine how different types of fibre affect the mechanical properties of concrete structures. It also  helps to understand the effect of age on concrete structures. Additional comparisons between various destructive  and non-destructive tests have been conducted, and a correlation has been established between the two types  of examinations.