Research on The Chloride Diffusion Modified Model for Marine Concretes with Nanoparticles under The Action of Multiple Environmental Factors

Marine concrete structures are subject to the action of multiple environments during their service time. This leads increased deterioration in durability marine concretes under combined bending load and dry–wet cycles, salt freeze–thaw spray erosion. The main reason for damage above three is Cl- attack. free content (Cl-f) diffusion coefficient (Df) can explain concrete. paper considers actual environment develops modified model nano-marine nano-SiO2, nano-Fe2O3, nano-Fe3O4 were firstly incorporated into ordinary concrete, then each group was measured at different depths, coefficients calculated; finally, established environmental factors. test results show that total lower than those optimum dosage 2%, 1%, respectively. fitting have a good correlation, correlation (R) basically 0.98.