Abstract
The conventional spray-applied fire-resistive material meets the basic fire resistance requirements. However, it has limited strength and ductility, and poor bonding with the substrate, consequently, it will not deform with the main structure and reduces the fire resistance performance. A multifunctional spray-applied, fire-resistive and corrosion-resistive Engineered Cementitious Composites (SFRCR-ECC) has been developed to overcome these defects. Material properties of SFRCR-ECC coating were initially investigated, as well as the ISO-834 standard fire test of CFST columns sprayed with SFRCR-ECC coating were carried out. The effects of SFRCR-ECC coating thickness and the load ratio of the columns to the fire resistance limit were preliminarily explored, while the damage of the specimens after the open fire test, the temperature distribution and the axial deformation of CFST columns were obtained. The open fire test results also proved that SFRCR-ECC has excellent fire resistance performance as a new sprayable fire resistant material.
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