Experimental study of the durability of high-performance cementitious composites with amorphous metallic fibers

Zhao, Shengdun; Li, Jun

doi:10.1016/j.conbuildmat.2023.130295

Cited by 4 publications

(1 citation statement)

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“…Table 4 lists the primary physical and mechanical properties of the fibers. The AM fibers featured a ribbon shape and rough surface and exhibited a better bonding performance between the fibers and the matrix than conventional steel fibers (Choe et al [ 20 ], Zhao et al [ 21 ]). Nylon fiber is a kind of synthetic polymer commonly used for concrete structures, with the capabilities of shrinkage prevention, crack width control, and increasing tensile ductility.…”

Section: Materials and Experimental Layoutmentioning

confidence: 99%

Experimental Study on Compressive and Flexural Performance of Lightweight Cement-Based Composites Reinforced with Hybrid Short Fibers

2023

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This paper aims to experimentally study the compressive and flexural characteristics of cement-based composites developed for fabricating thin, lightweight, and high-performance components of buildings. Expanded hollow glass particles with a 0.25–0.5 mm particle size were used as lightweight fillers. Hybrid fibers made of amorphous metallic (AM) and nylon fibers were used to reinforce the matrix with a total volume fraction of 1.5%. The primary test parameters included the expanded glass-to-binder (EG/B) ratio, the fiber volume content ratio, and the length of the nylon fibers in the hybrid system. The experimental results demonstrate that the EG/B ratio and the volume dosage of the nylon fibers exhibited insignificant effects on the compressive strength of the composites. Additionally, the utilization of nylon fibers with a longer length of 12 mm resulted in a slight compressive strength reduction of approximately 13% compared to that of the 6 mm nylon fibers. Further, the EG/G ratio exhibited an insignificant effect on the flexural behavior of lightweight cement-based composites in terms of their initial stiffness, strength, and ductility. Meanwhile, the increasing AM fiber volume fraction in the hybrid system from 0.25% to 0.5% and 1.0% improved flexural toughness by 42.8% and 57.2%, respectively. In addition, the nylon fiber length significantly affected the deformation capacity at the peak load and the residual strength in the post-peak stage.

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Section: Materials and Experimental Layoutmentioning

confidence: 99%