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Copyright of Materials & Structures is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Materials & Structures is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Materials & Structures is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Materials & Structures is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Plain and steel fibre reinforced concrete cylinders were tested uni-axially in tension under closed-looped conditions in a round robin test programme. During the test, three deformation readings around the notched plane were measured. It was found that during the course of the test, rotations were occurring and thus a fibre counting exercise was initiated. This was to investigate the influence of fibre distribution within the cylinder specimens on the observed rotations of the specimens. The results of the investigation could not detect any strong correlation between the fibre distribution and the observed rotations and a more likely source for the variations observed is the boundary conditions of the tests. Significant variations were found in the number of fibres with coefficients of variation in the range of 30% to 50%. Additionally, it was found that toughness is approximately linearly related to the number of fibres in the fracture surface up to a certain limiting value where the toughness appears to plateau in relation to the mumber of fibres. [ABSTRACT FROM AUTHOR]

A round robin test programme was carried out on the uni-axial tensile test recommended by the RILEM TC 162-TDF [1]. Both plain concrete and steel fibre reinforced concrete (SFRC) cylinders were tested. Two concrete strengths and three fibre dosages were included in the test programme. A comprehensive statistical analysis was carried out on the results to investigate the robustness of the test method. Investigations were carried out on the intra-lab variations, inter-lab variations and within-mix variations. Inter-lab variations were found to exist but these were not as significant as the inherent material variation. Although there were difficulties encountered during the test execution, the uniaxial test was found to be a robust test. The material parameter obtained from such a test is important in determining the fracture properties of concrete particularly in non-linear fracture studies. [ABSTRACT FROM AUTHOR]

Copyright of Materials & Structures is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Materials & Structures is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)