Concrete composition suitable for 3-D printing and a method for 3-D printing of multiple layers of concrete
AssigneeTitan America LLC
InventorsEric Koehler, SooDuck Hwang, George Pantazopoulos
Life of this patent
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Abstract
A concrete composition having an optimized formulation and suitable for 3-D printing is provided. The composition may include a hydraulic cement composition, aggregate, cement and/or aggregate by-product dust, one or more rheology modifiers, a plasticizer, fibers, and a sufficient amount of water to effect setting of the composition. Optionally the concrete composition may include a setting agent. A method for 3D printing multiple layers of the concrete composition is also provided.
Claims24
A concrete composition suitable for 3-D printing, the composition comprising, expressed by percent of dry components:
- a) 20 to 50 mass percent of a hydraulic cement composition;
- b) 30 to 60 mass percent of aggregate;
- c) 1 to 40 mass percent of cement by-product dust;
- d) 0.001 to 0.2 mass percent one or more rheology modifiers;
- e) 0.02 to 0.5 mass percent plasticizer;
- f) 0 to 5 mass percent shrinkage control agent;
- g) 0.02 to 1.0 mass percent fibers selected from the group consisting of glass fibers, silicon carbide, aramid fibers, polyester, carbon fibers, composite fibers, fiberglass, polypropylene, nylon, steel, combinations thereof and fabrics containing fibers selected from the group, and fabric containing combinations of fibers selected from the group;
- and
- a sufficient amount of water to effect setting of the composition.
A concrete composition suitable for 3-D printing, the composition comprising, expressed by percent of dry components:
- a) 20 to 50 mass percent of a hydraulic cement composition;
- b) 30 to 60 mass percent of aggregate;
- c) 1 to 40 mass percent of cement by-product dust;
- d) 0.001 to 0.2 mass percent one or more rheology modifiers;
- e) 0.02 to 0.5 mass percent plasticizer;
- f) 0 to 5 mass percent shrinkage control agent;
- g) 0.01 to 2.0 mass percent of a setting agent selected from the group consisting of calcium nitrate, calcium nitrite, calcium formate, calcium chloride, sodium thiocyanate, and calcium sulphoaluminate;
- h). 0.02 to 1.0 mass percent fibers;
- and
- a sufficient amount of water to effect setting of the composition.
Dependencies are inferred from the claim text.