Determination of fracture toughness in plain concrete specimens by R curve
Experimental tests and computational algorithm are implemented to investigate crack growth phenomena in C0.7 concrete. Firstly, three point bending tests are carried out on normalized prismatic specimens notched laterally (SENB), then, computational calculation was developed to calculate the concr...
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| Language: | English |
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Gruppo Italiano Frattura
2019-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2518/2597 |
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| author | Chbani Hamza Saadouki Bouchra Barakat Mohamed |
| author_facet | Chbani Hamza Saadouki Bouchra Barakat Mohamed |
| author_sort | Chbani Hamza |
| collection | DOAJ |
| description | Experimental tests and computational algorithm are implemented to investigate crack growth phenomena in C0.7 concrete. Firstly, three point bending tests are carried out on normalized prismatic specimens notched laterally (SENB), then, computational calculation was developed to calculate the concrete toughness on the basis of R-curve method. The R-curve was obtained from the curve connecting the crack mouth opening displacement (CMOD) to the applied load. During loading, elastic deformation followed by a significant plastic deformation were observed. Therefore, the crack growth in C0.7 concrete is defining by three stages: crack initiation, stable crack propagation and an unstable fracture. The average value of the critical stress intensity factor for the C0.7 concrete is 1.05 MPa.m1/2. |
| format | Article |
| id | doaj-art-8135546d028e4b62bece128fd5c91706 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2019-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-8135546d028e4b62bece128fd5c917062025-01-03T00:39:15ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-07-01134976377410.3221/IGF-ESIS.49.6810.3221/IGF-ESIS.49.68Determination of fracture toughness in plain concrete specimens by R curveChbani HamzaSaadouki BouchraBarakat MohamedExperimental tests and computational algorithm are implemented to investigate crack growth phenomena in C0.7 concrete. Firstly, three point bending tests are carried out on normalized prismatic specimens notched laterally (SENB), then, computational calculation was developed to calculate the concrete toughness on the basis of R-curve method. The R-curve was obtained from the curve connecting the crack mouth opening displacement (CMOD) to the applied load. During loading, elastic deformation followed by a significant plastic deformation were observed. Therefore, the crack growth in C0.7 concrete is defining by three stages: crack initiation, stable crack propagation and an unstable fracture. The average value of the critical stress intensity factor for the C0.7 concrete is 1.05 MPa.m1/2.https://www.fracturae.com/index.php/fis/article/view/2518/2597ToughnessR-curveCMODSENBThree-point bending |
| spellingShingle | Chbani Hamza Saadouki Bouchra Barakat Mohamed Determination of fracture toughness in plain concrete specimens by R curve Fracture and Structural Integrity Toughness R-curve CMOD SENB Three-point bending |
| title | Determination of fracture toughness in plain concrete specimens by R curve |
| title_full | Determination of fracture toughness in plain concrete specimens by R curve |
| title_fullStr | Determination of fracture toughness in plain concrete specimens by R curve |
| title_full_unstemmed | Determination of fracture toughness in plain concrete specimens by R curve |
| title_short | Determination of fracture toughness in plain concrete specimens by R curve |
| title_sort | determination of fracture toughness in plain concrete specimens by r curve |
| topic | Toughness R-curve CMOD SENB Three-point bending |
| url | https://www.fracturae.com/index.php/fis/article/view/2518/2597 |
| work_keys_str_mv | AT chbanihamza determinationoffracturetoughnessinplainconcretespecimensbyrcurve AT saadoukibouchra determinationoffracturetoughnessinplainconcretespecimensbyrcurve AT barakatmohamed determinationoffracturetoughnessinplainconcretespecimensbyrcurve |