Laboratory investigation of potentiol use of date palm fibers for internal curing of high performance concrete

Document Type : Original Article

Authors

1 Civil Engineering - Structure, Technical and Engineering Campus, Yazd University, Yazd, Iran.

2 Member of the Faculty of Civil Engineering, Technical and Engineering Campus, Yazd University, Yazd, Iran.

Abstract

In this paper, the physical and mechanical properties of date palm fibers known as (Sis) which are abundantly found in Bam city (Southeastern Iran) have been investigated. For this test fibers were used in the laboratory, in the form of filaments; The mechanical properties of the fibers, including tensile strength, Young's modulus and elongation in dry and wet conditions were evaluated; Also, the physical properties of the fibers, including the shape, diameter, porosity, grain surface, the type of compounds in fibers and the amount of these compounds, density, The percentage of water and moisture absorption and the rate of water and moisture loss were assessed. According to the results obtained in this study, by decreasing the length of tensile strength fibers, Young's modulus and elongation increase in dry and wet conditions; Also, the density of fibers in the saturated state with a dry surface of 1.12 gr/cm³ and in the humid state at room temperature 0.61 gr/cm³, the water absorption of fibers is 127.5% and the percentage of moisture in the fibers 8.72%; Achieved; On average we can say the fibers lose 1 gr of moisture every ten minutes. Given these characteristics, the capacity to use these fibers would be useful in order to solve the problems of strong concrete. At the same time the fibers improve the internal performance of concrete due to their water absorption capacity and high moisture content. Important properties of fibers in order to improve internal functionality include water absorption and retention capacity and high moisture content.

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History

  • Receive Date: 15 November 2023
  • Revise Date: 18 March 2024
  • Accept Date: 19 November 2023

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