Abstract: The invention discloses a corrosion resistant coating for marine engineering concrete and a preparation method thereof, the corrosion resistant coating being sprayed or brushed on the concrete surface after being uniformly mixed by component A and component B,wherein the component A is calculated by weight including: waterborne non-ionic epoxy resin, C10-C12 alkyl glycidyl ether, polyhedral oligomeric silsesquioxane, metal powder, magnesium aluminum hydrotalcite powder,dispersant,defoamer; and the component B is calculated by weight including: modified aromatic amine curing agent, C10-C12 alkyl glycidyl ether, self-healing micro capsules, leveling agent, antioxidant, adhesion promoter, and other additives.

Abstract: A preparation method for a corrosion-resistant coating of a reinforcing steel for marine concrete, comprising the steps: (1) pretreating the surface of a reinforcing steel; (2) preparing self-repairing corrosion microcapsules; (3) preparing a cathodic electrophoresis coating; (4) carrying out cathodic electrophoresis; and (5) curing. The electrophoresis coating of the present invention contains the self-repairing corrosion microcapsules, metal powder, and graphene oxide powder. The corrosion resistance of the coating is improved under the co-action of the self-repairing properties of the self-repairing microcapsules and cathodic protection. The corrosion-resistant coating has excellent adhesion and corrosion resistance, prolonging the service life of reinforcing steel. It is widely used for the protection of reinforcing steels for marine concrete, and also for the protection of metal structures in general environment.

Abstract: A method of preparing high strength coral concrete, wherein the high strength coral concrete is prepared from raw materials of the following parts by mass: 25˜63 parts of cementing materials, 45˜58 parts of coral aggregate, 10˜16 parts of mixing water and water reducer 2˜5% the weight of the cementing materials; the weighed coral aggregate, mixing water, water reducer and 55˜85% of the cementing materials are stirred in an agitator for 10˜15 minutes; the rest of cementing materials are added in batches before initial setting and stirred; then poured and removed from the mould after 24 hours, cured in mixing water at normal temperature for 28 days, to get the high strength coral concrete.