Abstract: With the increasing demand of building raw materials for the coastal engineering, it is obvious that the transportation of raw materials from inland to islands incurs high transportation costs and poor timeliness. For the construction of island and reef engineering, coral concrete can be mode from local available materials by using coral debris as aggregate and adding seawater. Fiber reinforced polymer (FRP) bars are used as structural reinforcement bars, which can effectively solve durability problems such as corrosion of steel in marine environment. However, basalt-fiber reinforced polymer (BFRP) bars with excellent mechanical properties are limited by short research time and insufficient theoretical experience in China. Therefore, a systematic study on enhancing the durability of BFRP bars reinforced coral concrete should be carried out to ensure the safety of island and reef engineering construction. Thus, based on the existing research progress, the basic mechanical properties of BFRP bars and coral concrete are analyzed respectively, then the durability of BFRP bars, the durability of coral concrete, the bonding durability of the interface between BFRP bars and coral concrete, and the structure durability of coral concrete with BFRP reinforced are systematically discussed and summarized. Finally, prospect of future research on enhancing the durability of coral concrete with BFRP bars is proposed.

Key words: island and reef engineering, coral concrete, basalt-fiber reinforced polymer bar, BFRP bar reinforced coral concrete, durability, interface bonding