Oil corrosion-resistant agent for concrete and preparation method thereof

The invention provides an oil corrosion-resistant agent for concrete, belonging to the field of building material preparation. The oil corrosion-resistant agent comprises organic silicon, water glass, an air entraining agent, polyol and water, wherein the addition amounts of the above components by weight percent are respectively 10-30%, 10-20%, 0-0.05%, 5-15% and 35-75%. According to the invention, when the oil corrosion-resistant agent for concrete is used in the concrete, the oil corrosion resistance and the durability of the concrete can be improved significantly. Tests show that when the oil corrosion-resistant agent accounting for 2-3% of the total weight of the concrete is added to the concrete, the oil-resistant penetration height ratio of the concrete can be increased by more than 35%, the oil absorption rate can be increased by more than 40%, and the compressive strength of the concrete at various ages can be increased by more than 16%.