Economic efficiency of glass fiber reinforced concrete

Abstract

In this article, the technical and economic efficiency of glass fiber reinforced concrete in building structures has been comprehensively studied. In the research, the effect of adding 0.1–0.5% glass fibers to B25 class concrete on flexural and tensile strength was experimentally evaluated. The results showed that the fibers increase the crack resistance of concrete and strengthen the internal structure due to micro-reinforcement. This leads to a delayed appearance of cracks in structural elements and limits their development. It was also determined that there is a possibility to reduce the amount of reinforcement or optimize cross-sections. The article presents an economic comparison of mix compositions for 1 m³ of conventional B25 concrete and glass fiber concrete. According to the calculations, the application of fiber concrete provides an economic benefit of 22,410 sum per cubic meter. This benefit was also determined using the example of beam structures in a planned 4-story residential building in Namangan region. Considering the total concrete consumption of 123.4 m³ in the beams, the total savings amount to 2.77 million sums. It is scientifically substantiated that the economic benefit significantly increases when applied to numerous typical buildings and at the scale of concrete plants. The obtained results confirm the high efficiency of wide implementation of glass fiber concrete in practical construction.