<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>This study aims to experimentally evaluate the mechanical properties of concrete slabs reinforced with two types of fibers: metallic fibers (MF) and grids based on polypropylene fibers (PPG). The metallic fibers, sourced from machining waste of steel parts, are randomly distributed in the concrete, while the polypropylene fibers are arranged in grids. The investigation includes punching tests conducted on slabs measuring [25x50x7] cm³, as well as compression tests on cylinders with a diameter of Ø16 cm and a height of H32 cm. Mechanical resistance and tearing characteristics of the fibers were also assessed. The concrete’s composition was determined using the experimental “Dreux-Gorisse” method. Five different metal fiber contents (MF) were studied (W=0.2%, W=0.4%, W=0.6%, W=0.8%, and W=1%), alongside a control concrete sample (BT) with no fibers (W=0%) having the same composition as the matrix. Two variants of grids based on small-mesh polypropylene fibers (PPG/SM) and large-mesh (PPG/LM) configurations were considered. The comparative analysis of the results highlights that, at a fiber content of W=0.8%, metallic fibers (MF) enhance both resistance and rigidity more effectively than polypropylene fibers in small meshes (PPG/SM) and large meshes (PPG/LM), thereby limiting the formation of puncturing cracks.</p>
</abstract>

This study aims to experimentally evaluate the mechanical properties of concrete slabs reinforced with two types of fibers: metallic fibers (MF) and grids based on polypropylene fibers (PPG). The metallic fibers, sourced from machining waste of steel parts, are randomly distributed in the concrete, while the polypropylene fibers are arranged in grids. The investigation includes punching tests conducted on slabs measuring [25x50x7] cm³, as well as compression tests on cylinders with a diameter of Ø16 cm and a height of H32 cm. Mechanical resistance and tearing characteristics of the fibers were also assessed. The concrete’s composition was determined using the experimental “Dreux-Gorisse” method. Five different metal fiber contents (MF) were studied (W=0.2%, W=0.4%, W=0.6%, W=0.8%, and W=1%), alongside a control concrete sample (BT) with no fibers (W=0%) having the same composition as the matrix. Two variants of grids based on small-mesh polypropylene fibers (PPG/SM) and large-mesh (PPG/LM) configurations were considered. The comparative analysis of the results highlights that, at a fiber content of W=0.8%, metallic fibers (MF) enhance both resistance and rigidity more effectively than polypropylene fibers in small meshes (PPG/SM) and large meshes (PPG/LM), thereby limiting the formation of puncturing cracks.

Punching of Concrete Slabs Reinforced by Recycling Waste

Department of Civil Engineering, Faculty of Construction Engineering

University ‘Mouloud Mammeri’ of Tizi-Ouzou

Laboratory of Modelling of Materials and Structures in Civil Engineering (L2MSGC), University ‘Mouloud Mammeri’ of Tizi-Ouzou

Journal of Applied Engineering Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Punching of Concrete Slabs Reinforced by Recycling Waste"}

This study aims to experimentally evaluate the mechanical properties of concrete slabs reinforced with two types of fibers: metallic fibers (MF) and grids...

Punching of Concrete Slabs Reinforced by Recycling Waste

Publié en ligne: 20 mai 2024

Pages: 89 - 96

Reçu: 12 déc. 2023

Accepté: 27 janv. 2024

DOI: https://doi.org/10.2478/jaes-2024-0011

Mots clés
concrete slabs, punching, metal fibers, failure mode, polypropylene fibers, experimentation

© 2024 K. Hassani et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Punching of Concrete Slabs Reinforced by Recycling Waste

Publié en ligne: 20 mai 2024

Pages: 89 - 96

Reçu: 12 déc. 2023

Accepté: 27 janv. 2024

DOI: https://doi.org/10.2478/jaes-2024-0011

Mots clésconcrete slabs, punching, metal fibers, failure mode, polypropylene fibers, experimentation

© 2024 K. Hassani et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
concrete slabs, punching, metal fibers, failure mode, polypropylene fibers, experimentation