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Journal of Structural Engineering and Management Original Research

Performance of Sisal Fiber Concrete Using Fly Ash and Silica Fume Enhancements

  1. Akash Sunil Jadhav Department of Applied Mechanics, Government College of Engineering Aurangabad Chhatrapati Sambhajinagar, Maharashtra, India
  2. R.S. Londhe Department of Applied Mechanics, Government College of Engineering Aurangabad Chhatrapati Sambhajinagar, Maharashtra, India

Abstract

The construction industry has advanced significantly in constructing innovative structures using diverse materials. Various waste materials such as fly ash, sawdust, and residues of natural fibers have been utilized in the construction industry. Addressing these concerns requires exploring low-cost, environmentally friendly, and sustainable materials. This paper aims to investigate mixing silica fume, fly ash, and sisal fiber into concrete to address waste disposal and global warming issues while creating stronger concrete. Using natural fibers and additional cement materials in concrete has become increasingly popular recently because they can enhance durability and tensile strength. In this study, several concrete mixtures were made with distinct proportions of sisal fiber and fly ash, and micro silica fume. The mechanical properties of the produced concrete were evaluated and compared to those of traditional concrete. Addition of silica fume into the concrete 5% by the weight of cement, fly ash replacement 5%, 10%, 15%, and 20% by the weight of cement, and addition of sisal fiber 0.5%, 1%, 1.5%, 2% in concrete (M30 grade) were studied. The samples were tested for compression, flexure, and split tension after 7 and 28 days of curing. The samples were subjected to tests to assess their compressive, tensile, and flexural strengths. An increase in compressive strength by 21.67%, tensile strength by 20.56%, and flexure strength 16.18% was observed for 1.5% addition of fiber, 15% replacement of fly ash, and 5% addition of silica fume in M30 grade of concrete. Incorporation of silica fume improves the bond strength whereas sisal fiber bridges the cracks developed in the concrete by increasing the ductility and decreasing the brittleness and offers resistance to impact loading.

Keywords

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