Fiber-reinforced concrete as an aspect of green construction technology

This paper investigates the effects of the different types and percentages of fiber reinforcements in concrete on structures' design life. The primary parameter of the analysis is the tensile strength of concrete in correlation with compressive strength in dependence on the type and quantity of fibers. Using fiber reinforcement allows obtaining a pattern of evenly distributed micro-cracks instead of the usual system of localized individual relative wide cracks and increases the durability of structures. The durability of concrete is evaluated from the probability of the appearance of cracks through a comparative analysis of the results of experimental tests for mixtures with different types and amounts of fibers. The subject of the analysis is also a mixture of concrete made by increasing the coarse aggregate from recycled materials content and lower consumption of cementitious materials as a green concrete option with improved resistance to aggressive environmental influences. The main goal is to assess fiber-reinforced concrete (FRC) as cost-effective and green by increasing the recycled aggregate content and lowering the consumption of cementitious materials. A comparative analysis of results gained by statistical and machine learning methods is performed for the influential parameters' assessment of the FRC structures' design life.