Low-carbon alkali-activated marine sludge compound and preparation method thereof

The invention provides a low-carbon alkali-activated marine sludge compound which is composed of a component A and a component B. The mass ratio of the component A to the component B is 1: (0.5-2). Wherein the component A comprises the following components in 100 parts by weight: 85-95 parts of marine sludge, 5-10 parts of active silicon-aluminum solid waste and an alkaline solution with a solid-to-liquid ratio of 0.15-0.40; the component B is prepared from the following components in parts by weight: 70 to 80 parts of marine sludge, 10 to 20 parts of active silicon-aluminum solid, 5 to 15 parts of sea sand and water with the solid-to-liquid ratio of 0.15 to 0.40 according to 100 parts by weight. According to the method, a green and low-cost curing method is achieved through the method of adding a proper amount of the silicon-aluminum-rich solid waste and the alkali solution excitation, and the method is combined with the use of the alkali activator and the utilization of the solid waste, so that the utilizat