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<p>The present work addresses conducting an experimental comparison between different types and dosages of fibers and nanomaterials in compressive tests and the cost of mixes for high-strength concrete (HSC). This study investigated the materials used in the construction sector in Egypt. The experimental work was carried out to select the optimum percentage of each type of the used nanomaterials, and fibers to achieve the highest compressive strength and low cost. In this work, nineteen concrete mixes were prepared. Nano silica (NS) and nano clay (NC) were used at 0, 1, 2, and 3 % by weight of cement. Also, nano- fumed silica (FS) was used at 0, 1, 2, 3, 5, and 10 %, while silica fume (SF) was used at 10 % by weight of cement. Each type of corrugated round steel fiber (STF), and polypropylene fibers (PPF) were used at 0.5, 0.75, and 1.00 % by concrete volume. The results indicated that the compressive strength of the HSC increases as the percentage of adding nano-fumed silica increases up to 3 % and the economic feasibility of nano-fumed silica in concrete is better than in other nanomaterials such as nano silica and nano clay. Also, using 1 % steel fiber in HSC increases concrete strength significantly compared to conventional concrete without considerably increasing the cost.</p>
</abstract>

The present work addresses conducting an experimental comparison between different types and dosages of fibers and nanomaterials in compressive tests and the cost of mixes for high-strength concrete (HSC). This study investigated the materials used in the construction sector in Egypt. The experimental work was carried out to select the optimum percentage of each type of the used nanomaterials, and fibers to achieve the highest compressive strength and low cost. In this work, nineteen concrete mixes were prepared. Nano silica (NS) and nano clay (NC) were used at 0, 1, 2, and 3 % by weight of cement. Also, nano- fumed silica (FS) was used at 0, 1, 2, 3, 5, and 10 %, while silica fume (SF) was used at 10 % by weight of cement. Each type of corrugated round steel fiber (STF), and polypropylene fibers (PPF) were used at 0.5, 0.75, and 1.00 % by concrete volume. The results indicated that the compressive strength of the HSC increases as the percentage of adding nano-fumed silica increases up to 3 % and the economic feasibility of nano-fumed silica in concrete is better than in other nanomaterials such as nano silica and nano clay. Also, using 1 % steel fiber in HSC increases concrete strength significantly compared to conventional concrete without considerably increasing the cost.

Experimental Comparison of Fibers and Nanomaterials in Compression Test and Cost of High Strength Concrete in Egypt

Structural Engineering Department, Faculty of Engineering

Civil and Environmental Engineering

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

The present work addresses conducting an experimental comparison between different types and dosages of fibers and nanomaterials in compressive tests and the...

Experimental Comparison of Fibers and Nanomaterials in Compression Test and Cost of High Strength Concrete in Egypt

Publié en ligne: 14 déc. 2022

Pages: 736 - 749

DOI: https://doi.org/10.2478/cee-2022-0068

Mots clés
Nano silica, Nano clay, Steel fiber, Polypropylene fiber, Compressive strength

© 2022 Ezzat Gazy Al-Hamad et al., published by Sciendo

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

Experimental Comparison of Fibers and Nanomaterials in Compression Test and Cost of High Strength Concrete in Egypt

Publié en ligne: 14 déc. 2022

Pages: 736 - 749

DOI: https://doi.org/10.2478/cee-2022-0068

Mots clésNano silica, Nano clay, Steel fiber, Polypropylene fiber, Compressive strength

© 2022 Ezzat Gazy Al-Hamad et al., published by Sciendo

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

Mots clés
Nano silica, Nano clay, Steel fiber, Polypropylene fiber, Compressive strength