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US 12,226,930 B2Granted
3D concrete printing with ductile cords
AssigneeNV Bekaert SA
InventorsMatthias Gouwy, Anne Hoekstra
Life of this patent
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Abstract
A concrete construction (100) made by 3D concrete printing that contains: two or more layers (102, 106) of cementitious material extruded one above the other, and at least one elongated steel element (104) reinforcing at least one of the layers (102, 106). The elongated steel element (104) has an elastic and plastic elongation at break that exceeds 4%. The high elongation of the elongated steel element gives an increased ductility to the concrete structure (100).
Claims16
A concrete construction made by 3D concrete printing said construction comprising:
- two or more layers of cementitious material extruded one above the other, and
- at least one elongated steel element reinforcing at least one of said two or more layers,
- said elongated steel element having a carbon content ranging from 0.60% to 1.20%,
- said elongated steel element being cold worked to have a tensile strength exceeding 2500 MPa, wherein said elongated steel element has an elongation at break that exceeds 4%, wherein the elongated steel element is a steel cord.
1 more element
Dependencies are inferred from the claim text.