Nano magnesium oxide on the mechanical behavior of fiber reinforced concrete

This article examines the simultaneous effects of magnesium oxide nanomaterials and polypropylene fibers on the properties of fresh concrete and the mechanical characteristics of hardened concrete. To achieve this, concrete samples were prepared according to established methods, and the samples were molded. The percentages of magnesium oxide nanomaterials varied from 0% to 2% of the cement weight, while the percentage of polypropylene fibers ranged from 0% to 1.4% of the cement weight. The results indicate that the maximum compressive strength is achieved on average with 0.5% magnesium oxide nanomaterials and 0.8% polypropylene fibers. This trend is also observed in the splitting tensile strength and flexural strength. The water absorption of 28-day concrete without fibers and magnesium oxide nanomaterials is approximately 4.3%, which decreases to 3.1% as the amount of nanomaterial increases to 2% of the cement weight.