Analysis of the tensile fracture properties of ultra-high-strength fiber-reinforced concrete with different types of steel fibers by X-ray tomography
This study is concerned with the analysis of the tensile properties of an ultra-high-strength fiber-reinforced concrete manufactured with short and long steel fibers. The analysis involve using different techniques - from mechanical tests to X-ray computed tomography - to relate the observed variati...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-03-01
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| Series: | Materials & Design |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127519300024 |
| _version_ | 1818541386591371264 |
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| author | José D. Ríos Carlos Leiva M.P. Ariza Stanislav Seitl Héctor Cifuentes |
| author_facet | José D. Ríos Carlos Leiva M.P. Ariza Stanislav Seitl Héctor Cifuentes |
| author_sort | José D. Ríos |
| collection | DOAJ |
| description | This study is concerned with the analysis of the tensile properties of an ultra-high-strength fiber-reinforced concrete manufactured with short and long steel fibers. The analysis involve using different techniques - from mechanical tests to X-ray computed tomography - to relate the observed variation of the mechanical properties of the mixes with their porosity. A comprehensive study of the porosity distribution was conducted on the basis of the analysis of X-ray computed tomography images and porosimetry. The study shows the influence of the type of fiber used in the reinforcement on the pore size and distribution of the concrete matrix and consequently on its tensile properties. The tensile properties are obtained with an inverse analysis method available in the literature that yielded the first-cracking tensile strength (ft) and the ultimate tensile strength (ftu) and related with the inner structure of the concrete matrix. Our results prove that the tensile properties, especially the first-cracking strength, vary depending on the fibers used. These findings help mix designers make a decision about the type of fibers that should be used when a high first-cracking tensile strength is needed and make it possible to quantify the effect of the fiber. Keywords: Ultra-high-strength concrete, X-ray computed tomography, Steel fibers, Concrete matrix, Tensile behavior, Fracture behavior |
| first_indexed | 2024-12-11T22:08:37Z |
| format | Article |
| id | doaj.art-b5e77b67fdd14d23bf11d169897cfc99 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-11T22:08:37Z |
| publishDate | 2019-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-b5e77b67fdd14d23bf11d169897cfc992022-12-22T00:48:53ZengElsevierMaterials & Design0264-12752019-03-01165Analysis of the tensile fracture properties of ultra-high-strength fiber-reinforced concrete with different types of steel fibers by X-ray tomographyJosé D. Ríos0Carlos Leiva1M.P. Ariza2Stanislav Seitl3Héctor Cifuentes4ETS Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092 Sevilla, SpainETS Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092 Sevilla, SpainETS Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092 Sevilla, SpainAcademy of Sciences of the Czech Republic, Institute of Physics of Materials, žižkova 22, Brno 616 62, Czech RepublicETS Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092 Sevilla, Spain; Corresponding author.This study is concerned with the analysis of the tensile properties of an ultra-high-strength fiber-reinforced concrete manufactured with short and long steel fibers. The analysis involve using different techniques - from mechanical tests to X-ray computed tomography - to relate the observed variation of the mechanical properties of the mixes with their porosity. A comprehensive study of the porosity distribution was conducted on the basis of the analysis of X-ray computed tomography images and porosimetry. The study shows the influence of the type of fiber used in the reinforcement on the pore size and distribution of the concrete matrix and consequently on its tensile properties. The tensile properties are obtained with an inverse analysis method available in the literature that yielded the first-cracking tensile strength (ft) and the ultimate tensile strength (ftu) and related with the inner structure of the concrete matrix. Our results prove that the tensile properties, especially the first-cracking strength, vary depending on the fibers used. These findings help mix designers make a decision about the type of fibers that should be used when a high first-cracking tensile strength is needed and make it possible to quantify the effect of the fiber. Keywords: Ultra-high-strength concrete, X-ray computed tomography, Steel fibers, Concrete matrix, Tensile behavior, Fracture behaviorhttp://www.sciencedirect.com/science/article/pii/S0264127519300024 |
| spellingShingle | José D. Ríos Carlos Leiva M.P. Ariza Stanislav Seitl Héctor Cifuentes Analysis of the tensile fracture properties of ultra-high-strength fiber-reinforced concrete with different types of steel fibers by X-ray tomography Materials & Design |
| title | Analysis of the tensile fracture properties of ultra-high-strength fiber-reinforced concrete with different types of steel fibers by X-ray tomography |
| title_full | Analysis of the tensile fracture properties of ultra-high-strength fiber-reinforced concrete with different types of steel fibers by X-ray tomography |
| title_fullStr | Analysis of the tensile fracture properties of ultra-high-strength fiber-reinforced concrete with different types of steel fibers by X-ray tomography |
| title_full_unstemmed | Analysis of the tensile fracture properties of ultra-high-strength fiber-reinforced concrete with different types of steel fibers by X-ray tomography |
| title_short | Analysis of the tensile fracture properties of ultra-high-strength fiber-reinforced concrete with different types of steel fibers by X-ray tomography |
| title_sort | analysis of the tensile fracture properties of ultra high strength fiber reinforced concrete with different types of steel fibers by x ray tomography |
| url | http://www.sciencedirect.com/science/article/pii/S0264127519300024 |
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