Study on the corrosion resistance of sisal fiber concrete in marine environment

Abstract

In this paper, the corrosion resistance test of sisal fiber-reinforced concrete under simulated marine environment is carried out, and the corrosion resistance of sisal fiber-reinforced concrete is predicted by using grey theory and Verhulst model. The results show that sisal fiber can effectively improve the strength of concrete under the corrosion of marine environment. With the increase in sisal fiber content, the compressive strength of concrete increases as a whole compared with that of concrete without sisal fiber. After 15 days of corrosion cycle, the maximum strength increase ratio of concrete with sisal fiber is 18.58. After 30 days of corrosion cycle, the maximum strength increase ratio of concrete with sisal fiber is 12.72. The GM (1,1) model and Verhulst model in grey system theory are used to simulate the mechanical properties of sisal fiber-reinforced concrete and its corrosion resistance in marine environment. The results show that the average relative residual difference between the simulated and measured values is small and belongs to the first-order accuracy. It shows that the GM (1,1) model and Verhulst model in grey system theory can be used in the mechanics of sisal fiber-reinforced concrete, and prediction and analysis of performance and corrosion resistance in marine environment. A new corrosion-resistant material may be born from it.