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Journal of Construction Engineering, Technology & Management Original Research

An Experimental Investigation of Impact of Polyproplene as a Partial Replacement in Concrete

  1. Hinamshu Pathak
  2. B.P. Mudgal

Abstract

India, as a developing nation, will require high-strength and high-performance concrete for future infrastructure projects. Fibrous concrete, which incorporates fibers to enhance structural integrity, is one such material that could meet these demands. With different concrete fibrous materials, shapes, distributions, orientations, and densities, fibrous concrete takes on different characteristics. Polypropylene is a lightweight synthetic fiber that enhances the structural strength of concrete and helps prevent the formation of cracks. In this investigation, various percentages and values of polypropylene fibrouss—such as 0%, 0.5%, 1.0%, 1.5%, and 2.0% values—were added, and 1.0% of virgin polypropylene was substituted for cement in the concrete. Workability, split tensile strength, compressive strength, and flexural resistance tests were performed on specimen. Concrete is used by people all over the world as a straightforward, long-lasting, and safe building material. One of the main ingredients in concrete construction is Portland cement. Concerns over the growing use of concrete in building, particularly in developing nations, have led to attempts to create cement alternatives using locally accessible virgin polypropylene. This study's primary goal was to use virgin polypropylene at 0%, 0.5%, 1%, 1.5%, and 2% by weight to investigate the parameters of hardened (splitting tensile strength and compressive strength) and fresh (flowability) concrete. To reach the target strength of 28 N/mm², 90 concrete samples—comprising 45 cubes and 45 cylinders—were prepared, cured, and tested using a UTM at intervals of 7, 14, and 28 days. For each proportion, a set of three concrete specimens were formed in the shapes of cubes and cylinders, respectively, and the average of the three concrete samples was used to determine the outcome. As the amount of polypropylene mixed into the concrete increases, the flowability of fresh concrete diminishes. The findings demonstrated that adding 1.0% polypropylene to the concrete specimens at the 28-day curing stage improved their compressive and tensile strengths by 11.8% and 7.31%, respectively. This study's primary goal was to look at the use of virgin polypropylene in cement composites mixed with concrete.

Keywords

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