The effect of metallic and non-metallic fiber on the mechanical properties of waste ceramic concrete

What is it about?

The present study investigated the compressive, tensile, flexural and combined (flexural and torsional) strength of Waste Ceramic Optimal concrete with a varying percentage of metallic and non-metallic fibers. Fibre-reinforced concrete has widely been used due to its advantage that it excels over plain concrete. The present study highlights the metallic and non-metallic fiber effect in varying percentages on Waste ceramic optimal concrete (WOC) mechanical behavior. WOC has been obtained by replacing plain M25 grade concrete constituent with ceramic constituent (20% ceramic aggregate, 10% ceramic sand, and 10% ceramic powder ) on the basis of compressive, tensile, flexural, and combined (flexure and torsion) strength test performed in the laboratory. Two types of metallic fibers namely, hooked end steel fiber (HK) and crimped steel fiber (CR); and two types of non-metallic fibers, namely polyvinyl alcohol fiber (PVA) and polypropylene fiber (PP) have been used. Based on the total concrete volume, two fiber fractions of 1% and 2% were added to the specimen. Overall, 108 samples were cast for testing in compression on cube, tension on cylinder, flexure on beam, and combined (flexure and torsion) on the beam. For each test and each percentage, three samples were cast. Encouraging results have been obtained for both metallic and non-metallic fibers. In metallic fiber-WOC, optimal increment with respect to plain WOC in compression, tension, flexure, and combined ( flexure and torsion ) have been found 3.64%, 85.56%, 92.59%, and 85.18 %, respectively for 2% CR fiber wherein, for non-metallic case the increment was obtained as 5.52%, 30.59%, 9.62%, and 9.09%, respectively for 1% PVA fiber.

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Photo by Em bé khóc nhè on Unsplash

Photo by Em bé khóc nhè on Unsplash

Why is it important?

The main objective of this study is to shed some light on the mechanical properties (i.e., compressive strength, tensile strength, flexural strength, and combined (Flexural and torsional strength )) of WOC mixes. Two metallic (high stiffness) and two non-metallic (low stiffness) fibers were adopted in WOC concrete varying in fiber volume fraction (0%, 1%, 2%) to evaluate the influence of metallic and non-metallic fibers on hardened concrete properties. Also, the present study aimed to find out the optimal use of Steel hook-ended fibers (HK), Steel Crimped fibers (CR), Polyvinyl Alcohol fibers (PVA), and Polypropylene fibers (PP).

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