Low-carbon multi-element magnesium cementing material and preparation method thereof

The invention discloses a low-carbon multi-element magnesium cementing material and a preparation method thereof. The low-carbon multi-element magnesium cementing material is prepared from the following raw materials: a cementing component and an auxiliary exciting agent, the gelling component is composed of calcined clay and magnesium oxide; the auxiliary exciting agent is at least one of sodium sulfate, calcium chloride, sodium bicarbonate and sodium carbonate. According to the invention, a multi-component composite excitation means is innovatively provided, and according to the ion dissolution process of an early system, the hydration mechanism of the calcined clay is combined, and the early mechanical property of the cementing material is effectively improved by utilizing the organic coordination of various chemical auxiliary excitants; the early strength of the material is improved, the later strength of the material is ensured, and the mechanical property development is obvious. The low-carbon multi-ele