TY - JOUR AU - Gilford B. Estores, AU - Bernardo A. Lejano, PY - 2016/12/06 Y2 - 2024/03/29 TI - PULL-OUT STRENGTH OF AN EXPANSION STUD ANCHOR IN CARBON FIBER REINFORCED CONCRETE JF - GEOMATE Journal JA - INTERNATIONAL JOURNAL OF GEOMATE VL - 12 IS - 31 SE - Articles DO - UR - https://geomatejournal.com/geomate/article/view/1053 SP - 1-8 AB - <p>Carbon Fiber Reinforced Concrete (CFRC) is considered as an innovative structural material<br>because of its better performance characteristics when compared to conventional concrete. Its common<br>applications where expansion stud anchor connection is possible are in slabs on grade, wall panel, curtain<br>walls, and pre-cast elements. The design of this stud anchor in CFRC is of great interest to many structural<br>engineers, however, no model is available as basis for its design. To develop such model, this study<br>investigated the pull-out strength of an expansion stud anchor embedded in CFRC as influenced by fiber<br>volume content (Vf), fiber length (Lf), compressive strength and tensile strength. Three compression, three<br>tension, and five pull-out CFRC specimens each of different Vf (0.10%, 0.15%, 0.20%, 0.25%, 0.30%) and<br>different Lf (19 mm, 30 mm, 38 mm) were prepared, tested, analyzed, and compared to control concrete<br>specimens at design compressive strength of 21 MPa. Tests results show that pull-out strength of an<br>expansion stud anchor in CFRC is maximum at Vf = 0.10% and Lf = 38 mm. Among the parameters<br>considered, tensile strength is the most significant contributing factor that could influence the pull-out<br>strength of stud anchor in CFRC. This is further verified numerically by a FEM model with good agreement<br>to the observed tensile strength. Finally, a Response Surface Methodology (RSM) model is proposed to<br>predict the pull-out strength of an expansion stud anchor embedded in CFRC as influenced by the fiber<br>volume content, fiber length, compressive strength, and tensile strength.</p> ER -