Study On The Durability Of Simulation To Concrete On Preloading Compressive Stress

The study to concrete durability has 70 to 80 years, previous studies mainly on concrete pure materials research, and research in this area has been very thoroughly. the durability of concrete under various environmental studies are few. Concrete as a structural material, the durability of pure material compared to the durability under stress should be completely different.The study to the simulation of the state of concrete in service shows that the durability of concrete with their stress is closely linked to stress level, its main content and the results are as follows:1, we first proposed the view that the durability of the structure concrete can be affected by the stress level, and effective simulation experiments have been done in the laboratory.2, the durability of concrete dropping with the stress level (load ratio) increasing, especially the decline in the more obvious when the stress level greater than 70%. This law could explain the view that the higher strength, durability is not necessarily better.3, the state of the concrete in service should have a suitable level of stress (such as less than 70%) can guarantee a suitable durability.