Mechanical properties of GFRP Slip-form for in-situ application

Abstract

In this paper, a more effective construction method is introduced, wherein the mechanical advantages of Glass Fiber Reinforced Polymer (GFRP) are applied to the slip-form method. The slip-form method, which is a typical moving form method, has advantages such as reduced construction duration and simple components because it enables continuous forming work of concrete in a single construction. However, it is vulnerable to corrosion, quality control is difficult, and the form plate cannot be reused. In this study, a tensile test was carried out on a GFRP plate by using a new method to apply the steel form to the GFRP plate. Effective GFRP slip-form shape and the application method were proposed by conducting finite element analysis and parametric analysis based on the results of the GFRP plate tensile test; performance was verified through a structural test. From the test results, the GFRP slip-form showed better structural performance than the steel form, and the GFRP slip-form construction method may reduce costs because of its reusability, easy quality control, and reduced construction duration.