Highly thixotropic 3d printing concrete and manufacturing method therefor

A highly thixotropic 3D printing concrete, based on a weight percentage of each component calculated per cube of concrete, comprising:

• 35-40% of cement;
• 0.1-0.4% of polycarboxylate superplasticizer;
• 0.1-0.4% of polypropylene fiber;
• 1.0-3.0% of a special thixotropic agent for 3D printing concrete, being composed of following raw materials in weight percentage:
• 92-98% of inorganic flocculant, being one of magnesium nitrate, iron nitrate, magnesium sulfate, and iron sulfate;
• 1-4% of organic polymer thixotropic early strength agent, being polyacrylamide;
• 1-4% of foam stabilizer, being one of calcium lignosulfonate, higher fatty alcohol derivatives, and alkylphenol ethylene oxide;
• and
• 100% of a sum of above components;
• 12.5-14.5% of water;
• and
• a remainder, being sand.