Macro Synthetic Fiber Reinforced Concrete: Effect Of Fiber Embedded Length On Interface Properties

Summary of the Thesis This thesis concerns the study of the Macro-Synthetic Fiber, with the main objective of analyzing the effect of fiber embedded length on interface bond properties regard to different concrete mix design parameters. In particular the effect of different fiber embedded length, Water-Cement ratio (W/C), Cement-Sand ratio (C/S) and Cement strength on interfacial bond properties will be studied. The research is carried on by means of experimental direct pull-out tests on crimped macro-synthetic fibers embedded for two different lengths in a cementitious matrix characterized by different mix design. The experimental program employed is a part of a bigger experimental campaign on macro fiber reinforced concrete behavior which is under investigation at the University of Bologna. This experimental campaign was done to contribute the overall understanding of the fiber reinforced concrete, with the main goal of the calibration of a constitutive debonding law through numerical model and codification of fiber reinforced concrete in future, which is discussed in details in 5 Chapters in this study.