Experimental Study on Behavior of Steel Fiber and Glass Fiber for M30 Grade Concrete

Abstract

The cementations ingredients are one of the most important and often used materials in the building sector. These cement-based materials may be easily processed and prepared at an early stage, that is, before the curing process, into the necessary specified forms and structural configurations. However, these cement-based materials' main weakness is their brittleness, which is linked to their stiff characteristics and causes cracks to develop and spread when under stress. Due to this weakness, the mechanical qualities of the material deteriorate, necessitating expensive maintenance or even rebuilding over a very short period of time. Therefore, the construction industry needs new cement-based materials with improved durability features, such as those that offer increased fracture resistance. Since ancient times, ordinary concrete, a fragile substance, has taken the place of fiber-reinforced concrete. Although adding a single type of fibre to concrete may increase its mechanical strength, hybridising two fibre types can offset the drawbacks of each and combine their benefits. This thesis investigates the effects of utilising glass fibre and polypropylene fibre for concrete reinforcement on the mechanical characteristics of the concrete matrix.

In the current study, steel, fibres, and glass fibres were used in an experimental inquiry on M30 grade concrete. 0%+0%, 0.25%+0.25%, 0.5%+0.5%, 0.75%+0.75%, 1%+1%, 1.25%+1.25%, and 1.5%+1.5% are the doses at which steel and glass fibres are utilised. At the 7-day,

14-day, and 28-day curing periods, the compressive strength, split tensile strength, and flexural strength values are measured.