Abstract
AbstractUsing a new technique for pullout test of microfibers, the interfacial bond properties of two carbon fibers having a diameter of 10 µm and 46 µm were tested and compared with those of high modulus polyethylene and steel fibers having a diameter of 42 µm and 18 µm, respectively. The fibers were embedded in cement matrices of different water to binder ratio and silica-fume content.By studying the complete pullout load-pullout displacement curve and by using Environmental Scanning Electron Microscope (ESEM), it was found that the bond mechanism is mainly of friction for the fine and smooth carbon and polyethylene fibers. For the large carbon fiber and steel fiber, mechanical anchorage is the main bond mechanism.
Published Version
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