The invention provides a
cement-based
composite material for
powder-bonding three-dimensional (3D) printing. The material is prepared from the following components in parts by weight: 1 part of
cement, 0-5 parts of sand, 0-5 parts of a mineral admixture, 0-0.2 part of an expanding agent, 0-0.2 part of a
toughening agent, 0-0.2 part of mineral
pigment, 0.1-0.5 part of water, 0-0.25 part of
polymer emulsion, 0.001-0.05 part of an additive and 0-0.03 part of fibers, wherein the
cement is selected from one or a mixture of more in
silicate cements, sulphoaluminate cement, high
belite sulphoaluminate cement,
aluminate cement, fluoroaluminate cement,
aluminosilicate cement,
phosphate cement or
magnesium oxide cement; the additive is selected from one or a mixture of more in a water
reducing agent, an early strength agent or a coagulating regulating agent. After being contacted with water, the cement-based
composite material can be hardened, thus not needing a great deal of
polymer adhesive; the cement-based
composite material is rapid and controllable in hardening speed; the cement-based composite material is small in deformation in the hardening process, thus being suitable for a
powder-bonding 3D printing technology. The invention also provides a method for carrying out
powder-bonding 3D printing by using the cement-based composite material.