Groups of Physical Parameters Influencing the Three Stages Pull-Out Behavior of Glass Multi-filament Yarns Embedded in Micro-concrete

Abstract

Five different continuous glass yarns have been embedded in cement based micro concrete. The pull-out behavior of the yarns has been characterized by the way of a classical pull-out test when the physical state of the impregnation has been characterized by different dedicated methodology (differential mercury intrusion porosimetry, flow test, SEM characterization). By studying the correlation between the mechanical behavior and the physical properties of the impregnated yarns, groups of physical parameters have been identified as associated to each of the three stages of the pull-out behavior. The overall result of this work is a better understanding of the relationship between, on one hand, the physical state and the impregnation of the yarns and, on the other hand, the pull-out behavior.