Analysis of creep process of marine concrete

Abstract

The use of marine concrete is increasingly common with the rapid development of marine economy. The corrosion and fracture of concrete in marine building structures are relatively serious, due to the strong corrosiveness of sodium and chlorine ions in seawater. Therefore, it is of great significance to study the creep laws of concrete in marine environment. A marine concrete pier is taken as the analysis object, and the elastic theory and concrete creep theory are combined to build a model of that. The creep curves of concrete in marine environment are obtained by using finite element method, and it can be compared with the creep curves of ordinary concrete in theoretical analysis. The results show that the stress relaxation of marine concrete is greater and the stress state is more unstable than that of ordinary concrete under the same conditions. The time for marine concrete to reach the same stress state is about 6-9 years earlier than that of concrete in normal environment. In addition, it takes a longer time for the stress state of marine concrete to tend to be stable.