US 2025/0170749 A1 · CONCRETE FOR 3D PRINTING OF WALLS AND OTHER ARCHITECTURAL APPLICATIONS

Abstract

The present development corresponds to a concrete composition for 3D printing comprising cementitious agent, polydisperse matrix, fine materials, plasticizer, concrete accelerator, rheology controller, concrete retarder and optionally concrete shrinkage controllers and/or supplementary cementitious materials (SCMs), wherein the cementitious agent has an addition between 0% and 10% and wherein the mixture between the cementitious, polydisperse matrix, fine materials, and SCMs has a Rosin-Rammler distribution parameter less than 1. The present development is also related to the use of the concrete composition for 3D printing of structural walls and other architectural elements with a mechanical strength greater than 30 MPa and a very high quality of the finished surface.

Claims18

Dependent claims

A concrete composition for 3D printing comprising:

cementitious agent between 20% w/w to 40% w/w;
polydisperse matrix between 50% w/w to 70% w/w;
fine materials between 0% w/w to 20% w/w;
plasticizer between 0.05% w/w to 3% w/w;
concrete accelerator between 0.5% w/w to 9% w/w;
rheology controller between 0.04% w/w to 0.3% w/w;
concrete retarder between 0.1% w/w to 3% w/w;
wherein the cementitious agent has an addition between 0% and 10%;
and
wherein the mixture between the cementitious, polydisperse matrix, fine materials have a Rosin-Rammler distribution parameter of less than 1.

7 more elements

Dependencies are inferred from the claim text.

Concrete for 3d printing of walls and other architectural applications

Life of this patent

Concrete for 3d printing of walls and other architectural applications

Life of this patent

Abstract

Claims18