Predicting the Flexural Postcracking Performance of Steel Fiber Reinforced Concrete from the Pullout of Single Fibers

• DOI: 10.14359/281
• Publication Date: 2014-03-05T15:32:55Z
• Authors: Hugo S. Armelin; Nemkumar Banthia
• Keywords: 0211 other engineering and technologies; 02 engineering and technology

A model based on simple principles of mechanics is proposed to predict the flexural toughness of steel fiber reinforced concrete (SFRC), having the experimental pullout force-versus-slip relationships of single fibers at different inclination angles and the compressive strength of the matrix as the only two input parameters. The model is shown to be in good agreement with experimental results from tests on SFRC in terms of average response and kinematics of the failure mode. In addition, a reliability analysis has been incorporated in the model allowing for the prediction not only of the average expected response but also of its variability. This study of the stochastic nature of the process is also shown to agree well with the experiments and those reported in the literature in terms of the expected variability in the flexural toughness testing.