Method of 3D printing a geometrically complex construction product
The method addresses warping in 3D printed building products with complex geometric shapes by using expanded clay to support concrete layers, achieving structural stability without removable supports.
WO2026142444A1PCT designated stage Publication Date: 2026-07-02OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOSTYU 3D ART
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOSTYU 3D ART
- Filing Date
- 2024-12-26
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
Existing 3D printing methods struggle to produce building products with complex geometric shapes that have surfaces inclined at angles up to 180° without using removable supports, leading to warping issues.
Method used
A method involving layer-by-layer extrusion of concrete mixture, filling cavities with expanded clay, and using cement milk to form expanded clay concrete, which provides structural support and prevents warping.
Benefits of technology
The method effectively prevents warping of complex geometric building products by maintaining their configuration through the use of expanded clay as a lightweight support, ensuring structural integrity.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 00000006_0000 
Figure 00000006_0001 
Figure 00000007_0000
Abstract
The invention relates to the construction materials industry, and more particularly to a method of manufacturing geometrically complex construction products, the surface of which may be inclined inwards at an angle of up to 180° relative to the vertical axis, which is performed by layered extrusion (3D printing) without the use of removable supports or other accessories. The technical result of the invention is that of preventing buckling of the obtained construction product. A method of 3D printing a geometrically complex construction product comprises the following steps: a) applying a layer of a concrete mix in a 3D printing process for forming a wall of an end product; b) filling the cavity formed by the inner surfaces of the concrete mix layer with expanded clay aggregate having a particle size of 5-30 mm; c) applying a subsequent layer of concrete mix in a 3D printing process to the preceding layer of concrete mix in vertical alignment therewith or offset therefrom in the direction of the cavity; d) repeating steps a)-b) until the wall reaches the desired height of 200-500 mm; e) filling the cavities in the expanded clay aggregate with cement slurry to form an expanded clay aggregate concrete between the 3D printed surfaces by pouring cement slurry over the expanded clay aggregate and then allowing the mixture to gain strength; f) repeating steps a)-f) until the end product reaches the desired height.
Need to check novelty before this filing date? Find Prior Art