INFLUENCE OF STEEL FIBRES OF CRIMPED AND HOOKED-END SHAPE ON THE MECHANICAL PROPERTIES OF PORTLAND CEMENT

Authors

  • Nada Hamad Khalaf Material Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq Author
  • Sahib M. Mahdi Material Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq Author https://orcid.org/0000-0003-3642-9821
  • Yasir Khalil Ibrahim Material Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq Author

DOI:

https://doi.org/10.31272/jeasd.28.3.8

Keywords:

Portland Cement, Mechanical Properties, Compressive Strength , Splitting Tensile Strength, Flexural Strength, Crimped Steel Fiber, Hooked-End Steel Fiber, Fiber Geometry

Abstract

Cement mortar without fibers might crack due to shrinkage or volume changes. Cracking in cement mortar leads to elastic deformation. The development of these cracks causes elastic deformation of cement mortar. This study examined the influence of two steel fibers' geometrical forms (crimped and hooked with just one end) in different amounts by volume (Volume fraction = 0.25%, 0.5%, and 0.75%) on the cement mortar's mechanical features. Among the characteristics were splitting, compressive as well as flexural strength. The samples were prepared, poured into cubic molds for compressive strength testing cylindrical molds used for splitting strength testing, and prismatic molds for flexural strength testing, and processed at various times 3, 14, and 28 days before the tests. According to the findings, the highest increase was obtained after adding 0.75% of crimped fibers, the compressive strength increased by 13.3 %21.29%, and 44.8%, for 3,14.28 days respectively, and split tensile strength increased by 66.17%,68.9%, and 79.48% for 3.14 and 28 days respectively and flexural strength increased by 72 %,91% and 92% for 3.14 and 28 days, respectively.

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Key Dates

Received

2022-08-18

Revised

2024-02-08

Accepted

2024-04-14

Published Online First

2024-05-01

Published

2024-05-01

How to Cite

INFLUENCE OF STEEL FIBRES OF CRIMPED AND HOOKED-END SHAPE ON THE MECHANICAL PROPERTIES OF PORTLAND CEMENT. (2024). Journal of Engineering and Sustainable Development, 28(3), 384-391. https://doi.org/10.31272/jeasd.28.3.8

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