DEVELOPMENT OF HIGHLY DURABLE PERMANENT FORMWORK MADE OF THREE-DIMENSIONAL HOLLOW STRUCTURE GLASS FABRIC

Abstract

In this study, the fundamental properties and mechanical behaviors of thin plate units of the 10mm thickness using a three-dimensional hollow structure glass fabric and expansive paste were examined. This plate unit has cracking strength of 15N/mm², flexural strength of 70N/mm², and high-durability.
This plate unit was used as highly durable permanent formwork of RC beam, and then the loading tests of RC beams were carried out. The ultimate load and stiffness of RC beams which applied the plate as permanent formwork were improved by using the silica sand spraying between concrete and plate.