Residual Strength and Drying Behavior of Concrete Reinforced with Recycled Steel Fiber from Tires
Fiber reinforcement of concrete is an effective technique of providing ductility to concrete, increasing its flexural residual strength while reducing its potential for cracking due to drying shrinkage. There are currently a wide variety of industrial fibers on the market. Recycled steel fibers (RSF...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/20/6111 |
| _version_ | 1797514034032934912 |
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| author | David Revuelta Pedro Carballosa José Luis García Calvo Filipe Pedrosa |
| author_facet | David Revuelta Pedro Carballosa José Luis García Calvo Filipe Pedrosa |
| author_sort | David Revuelta |
| collection | DOAJ |
| description | Fiber reinforcement of concrete is an effective technique of providing ductility to concrete, increasing its flexural residual strength while reducing its potential for cracking due to drying shrinkage. There are currently a wide variety of industrial fibers on the market. Recycled steel fibers (RSF) from tires could offer a viable substitute of industrialized fibers in a more sustainable and eco-friendly way. However, mistrust exists among users, based on fear that the recycling process will reduce the performance, coupled with the difficulty of characterization of the geometry of the RSF, as a consequence of the size variability introduced by the recycling process. This work compares the behavior of RSF from tires compared with industrialized steel or polypropylene fibers, evaluating the fresh state, compressive strength, flexural residual strength, and drying behavior. The concept of Equivalent Fiber Length (EFL) is also defined to help the statistical geometrical characterization of the RSF. A microstructural analysis was carried out to evaluate the integration of the fiber in the matrix, as well as the possible presence of contaminants. The conclusion is reached that the addition of RSF has a similar effect to that of industrialized fibers on concrete’s properties when added at the same percentage. |
| first_indexed | 2024-03-10T06:25:54Z |
| format | Article |
| id | doaj.art-5c96bf8aded944b0acb49e49502a74ce |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T06:25:54Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-5c96bf8aded944b0acb49e49502a74ce2023-11-22T18:59:13ZengMDPI AGMaterials1996-19442021-10-011420611110.3390/ma14206111Residual Strength and Drying Behavior of Concrete Reinforced with Recycled Steel Fiber from TiresDavid Revuelta0Pedro Carballosa1José Luis García Calvo2Filipe Pedrosa3Institute for Construction Sciences Eduardo Torroja, CSIC, Serrano Galvache 4, 28033 Madrid, SpainInstitute for Construction Sciences Eduardo Torroja, CSIC, Serrano Galvache 4, 28033 Madrid, SpainInstitute for Construction Sciences Eduardo Torroja, CSIC, Serrano Galvache 4, 28033 Madrid, SpainInstitute for Construction Sciences Eduardo Torroja, CSIC, Serrano Galvache 4, 28033 Madrid, SpainFiber reinforcement of concrete is an effective technique of providing ductility to concrete, increasing its flexural residual strength while reducing its potential for cracking due to drying shrinkage. There are currently a wide variety of industrial fibers on the market. Recycled steel fibers (RSF) from tires could offer a viable substitute of industrialized fibers in a more sustainable and eco-friendly way. However, mistrust exists among users, based on fear that the recycling process will reduce the performance, coupled with the difficulty of characterization of the geometry of the RSF, as a consequence of the size variability introduced by the recycling process. This work compares the behavior of RSF from tires compared with industrialized steel or polypropylene fibers, evaluating the fresh state, compressive strength, flexural residual strength, and drying behavior. The concept of Equivalent Fiber Length (EFL) is also defined to help the statistical geometrical characterization of the RSF. A microstructural analysis was carried out to evaluate the integration of the fiber in the matrix, as well as the possible presence of contaminants. The conclusion is reached that the addition of RSF has a similar effect to that of industrialized fibers on concrete’s properties when added at the same percentage.https://www.mdpi.com/1996-1944/14/20/6111fiber reinforced concreterecycled fiberssteel fiberspolypropylene fibersflexural residual strengthdrying shrinkage |
| spellingShingle | David Revuelta Pedro Carballosa José Luis García Calvo Filipe Pedrosa Residual Strength and Drying Behavior of Concrete Reinforced with Recycled Steel Fiber from Tires Materials fiber reinforced concrete recycled fibers steel fibers polypropylene fibers flexural residual strength drying shrinkage |
| title | Residual Strength and Drying Behavior of Concrete Reinforced with Recycled Steel Fiber from Tires |
| title_full | Residual Strength and Drying Behavior of Concrete Reinforced with Recycled Steel Fiber from Tires |
| title_fullStr | Residual Strength and Drying Behavior of Concrete Reinforced with Recycled Steel Fiber from Tires |
| title_full_unstemmed | Residual Strength and Drying Behavior of Concrete Reinforced with Recycled Steel Fiber from Tires |
| title_short | Residual Strength and Drying Behavior of Concrete Reinforced with Recycled Steel Fiber from Tires |
| title_sort | residual strength and drying behavior of concrete reinforced with recycled steel fiber from tires |
| topic | fiber reinforced concrete recycled fibers steel fibers polypropylene fibers flexural residual strength drying shrinkage |
| url | https://www.mdpi.com/1996-1944/14/20/6111 |
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