Finding an economic mixture design for fiber reinforced traffic slabs

Document Type : Research Paper

Authors

1 Department of civil engineering, Shahrood university of Technology, Shahrood, Iran

2 Department of Civil Engineering, Shahrood University of Technology, Shahrood, Iran.

10.22124/jcr.2026.30707.1714

Abstract

Concrete is a brittle material with low strength and strain capacity. In recent decades, fibers have been used to enhance concrete and overcome these limitations. In this study, macro twisted, and PP fibers were used in a hybrid form to produce traffic concrete overlays. In 21 different mixtures, the volumetric ratio of macro fibers ranged from 0 to 0.165%, and polypropylene (PP) fibers ranged from 0 to 0.604%. The mixtures were tested for compressive strength, tensile strength, flexural strength, impact resistance, and shrinkage. The results showed that adding fibers had little effect on compressive strength, but it significantly improved tensile and flexural strength. Additionally, the impact resistance of fiber-reinforced concrete increased by up to 5 times. Finally, a software with python was developed in order to optimization the valume of fibers and thickness of the slab. As a result,, the optimal mixture contained 0.110% macro fibers and 0.165% polypropylene fibers was recommended.

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Main Subjects

References

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