Analysis and prospect of the progress of modified enhanced and high-performance coral concrete

Abstract

[Objective] As an important supporting platform for marine resources development, it is of great significance to prepare coral concrete in the construction of the island reef project. In order to solve problems such as low coral concrete strength, high brittleness, durability and poor and pronounced problems, the coral concrete needs to be modified to increase to meet the high-level building structure and even explosion-proof seismic fields. [Methods] Based on literature surveys, the research progress of coral aggregate characteristics, coral concrete performance, modified enhancement technology, durability and high-strength and high-performance coral concrete development research progress. [Results] The result showed that the strength of the aggregate aggregate, the high pore rate, and the high concentration of the sea salt restricted the development of coral concrete performance; except for the ingredients itself, the cohesive materials, external agents, fibrous products, etc. in the design of the than the design of the than the design of the corals The performance of concrete has an important impact. [Conclusion] Gel condensate materials, external agents, optimized coordination ratio, use of acid solution or organic solution to treat aggregate, incorporate fiber and other technical method can effectively improve coral concrete performance; exposure time and mineral component can improve the anti-osmotic anti-penetration of coral concrete Capability; carbonization is related to the environment, not all mineral components are conducive to improving the resistance of carbon; considering the type of cement and mineral components that are conducive to improving the anti-sulfate performance of concrete; Low pressure stirring or ground polymer can prepare high-strength/high-performance coral concrete. Research findings also explores the advantages and disadvantages and effects of different modified enhanced technologies, and looks forward to the field of high-strength/high-performance coral concrete materials and structural research on cutting-edge at front, which can provide a reference for subsequent research directions.

Keywords

coral concrete / high-performance coral concrete / mechanical properties / durability / modification technology / influencing factors / offshore islands and reefs / impermeability ability