Enhancing strength and durability of recycled fine aggregate mixtures using steel fibers, silica fume, and latex polymers
Recycled fine aggregates (RFA) are often prohibited in new construction applications because of their poor physical properties. This paper assesses the feasibility of incorporating steel fibers, silica fume, and latex polymers to mitigate the drop in mechanical properties and durability of RFA-modif...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Developments in the Built Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666165924002801 |
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| author | Ali Mardani Hatice Gizem Şahin Yahya Kaya Naz Mardani Joseph J. Assaad Hilal El-Hassan |
| author_facet | Ali Mardani Hatice Gizem Şahin Yahya Kaya Naz Mardani Joseph J. Assaad Hilal El-Hassan |
| author_sort | Ali Mardani |
| collection | DOAJ |
| description | Recycled fine aggregates (RFA) are often prohibited in new construction applications because of their poor physical properties. This paper assesses the feasibility of incorporating steel fibers, silica fume, and latex polymers to mitigate the drop in mechanical properties and durability of RFA-modified cementitious matrices. Testing was conducted on concrete-equivalent mortars with 80–100 MPa compressive strength and later validated on corresponding concrete mixtures. Results showed that the mechanical strengths, drying shrinkage, abrasion, and freeze/thaw resistance degraded when the natural sand was replaced by 100% RFA. The use of steel fibers or silica fume was efficient in restoring these properties within ±8% of the control mix. Meanwhile, latex polymers were more efficient in enhancing the permeability and bond properties with steel reinforcement within ±5% of the control mix. The optimum percentage of steel fibers determined from the TOPSIS method was 0.5% by volume, while the silica fume and latex optimum percentages were 6% and 2.5% of binder mass, respectively. |
| format | Article |
| id | doaj-art-8e7f5f29caa4410c8031c5e480dcc3f6 |
| institution | Kabale University |
| issn | 2666-1659 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Developments in the Built Environment |
| spelling | doaj-art-8e7f5f29caa4410c8031c5e480dcc3f62025-08-20T03:42:57ZengElsevierDevelopments in the Built Environment2666-16592025-03-012110059910.1016/j.dibe.2024.100599Enhancing strength and durability of recycled fine aggregate mixtures using steel fibers, silica fume, and latex polymersAli Mardani0Hatice Gizem Şahin1Yahya Kaya2Naz Mardani3Joseph J. Assaad4Hilal El-Hassan5Department of Civil Engineering, Bursa Uludag University, Nilufer-Bursa, TurkeyDepartment of Civil Engineering, Bursa Uludag University, Nilufer-Bursa, TurkeyDepartment of Civil Engineering, Bursa Uludag University, Nilufer-Bursa, TurkeyDepartment of Mathematics Education, Bursa Uludag University, Nilufer-Bursa, TurkeyDepartment of Civil and Environmental Engineering, University of Balamand, LebanonDepartment of Civil and Environmental Engineering, United Arab Emirates University, Al Ain, United Arab Emirates; Corresponding author.Recycled fine aggregates (RFA) are often prohibited in new construction applications because of their poor physical properties. This paper assesses the feasibility of incorporating steel fibers, silica fume, and latex polymers to mitigate the drop in mechanical properties and durability of RFA-modified cementitious matrices. Testing was conducted on concrete-equivalent mortars with 80–100 MPa compressive strength and later validated on corresponding concrete mixtures. Results showed that the mechanical strengths, drying shrinkage, abrasion, and freeze/thaw resistance degraded when the natural sand was replaced by 100% RFA. The use of steel fibers or silica fume was efficient in restoring these properties within ±8% of the control mix. Meanwhile, latex polymers were more efficient in enhancing the permeability and bond properties with steel reinforcement within ±5% of the control mix. The optimum percentage of steel fibers determined from the TOPSIS method was 0.5% by volume, while the silica fume and latex optimum percentages were 6% and 2.5% of binder mass, respectively.http://www.sciencedirect.com/science/article/pii/S2666165924002801ConcreteMortarRecycled fine aggregateSilica fumeLatex polymerSteel fiber |
| spellingShingle | Ali Mardani Hatice Gizem Şahin Yahya Kaya Naz Mardani Joseph J. Assaad Hilal El-Hassan Enhancing strength and durability of recycled fine aggregate mixtures using steel fibers, silica fume, and latex polymers Developments in the Built Environment Concrete Mortar Recycled fine aggregate Silica fume Latex polymer Steel fiber |
| title | Enhancing strength and durability of recycled fine aggregate mixtures using steel fibers, silica fume, and latex polymers |
| title_full | Enhancing strength and durability of recycled fine aggregate mixtures using steel fibers, silica fume, and latex polymers |
| title_fullStr | Enhancing strength and durability of recycled fine aggregate mixtures using steel fibers, silica fume, and latex polymers |
| title_full_unstemmed | Enhancing strength and durability of recycled fine aggregate mixtures using steel fibers, silica fume, and latex polymers |
| title_short | Enhancing strength and durability of recycled fine aggregate mixtures using steel fibers, silica fume, and latex polymers |
| title_sort | enhancing strength and durability of recycled fine aggregate mixtures using steel fibers silica fume and latex polymers |
| topic | Concrete Mortar Recycled fine aggregate Silica fume Latex polymer Steel fiber |
| url | http://www.sciencedirect.com/science/article/pii/S2666165924002801 |
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