3D Printed Architectural Components Using Integrated Cementitious Mix
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Solution Overview
Problem
Current 3D printing technologies for architectural components face challenges such as limited design complexity, inadequate functional integration, and inefficiencies due to disjointed material preparation, design conceptualization, and printing processes. Additionally, existing methods often require post-processing steps and do not fully exploit customization potential, leading to environmental concerns related to material usage.
Innovation Solution
A holistic approach is introduced that integrates material composition, architectural design, and manufacturing parameters to optimize the 3D printing process. This involves determining a cementitious mix tailored for additive three-dimensional printing, with a nuanced control of composition using mineralogical additives, chemical admixtures, and graded siliceous sand. The method also includes computational design tools for structural optimization, thermal performance enhancement, and multifunctionality, ensuring layer stability and efficient material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If standard material compositions are used in 3D printing, then the printing process is simple, but the structural integrity and functional performance are compromised
Solution Approach 1:
The patent uses composite cementitious materials containing cement, sand, water, and multiple additives (superplasticizer, viscosity modifying agent, air-entraining agent) to achieve both structural integrity and printability. This composite approach allows the material to exhibit multiple properties simultaneously: strength, flowability, stability, and curing characteristics needed for architectural 3D printing
Solution Approach 2:
The patent optimizes material parameters including water-to-cement ratio, additive dosages, and particle size distribution to achieve the desired balance between strength and printability. By carefully controlling these parameters, the material can be extruded smoothly while maintaining structural integrity after curing
2Productivity
If separate stages are used for material preparation, design conceptualization, and printing, then each stage can be optimized independently, but the overall process efficiency decreases and functional integration is limited
Solution Approach 1:
The patent merges material preparation, design, and printing into an integrated process where the cementitious material formulation is specifically designed for additive manufacturing. The material composition is optimized to work seamlessly with the 3D printing process, eliminating the need for separate preparation and post-processing stages
Solution Approach 2:
The cementitious material serves multiple functions: it acts as the structural matrix, the printing medium, and the final cured component. This multi-functional material eliminates the need for separate support materials, primers, or post-processing treatments, streamlining the entire manufacturing process
3Loss of substance
If conventional construction methods are used, then material availability is high, but material wastage and labor intensity are significant
Solution Approach 1:
The 3D printing process deposits material only where needed, layer by layer, according to the digital design model. This eliminates formwork and excess material that would otherwise be required in conventional construction, significantly reducing material wastage while maintaining structural integrity
Solution Approach 2:
The cementitious material is designed to self-level and self-compact within the extrusion nozzle and deposited layers, eliminating the need for manual compaction or additional finishing operations. The material's rheological properties ensure proper flow and settlement without external intervention
4Manufacturing precision
If additional curing or post-processing steps are required, then the component quality is improved, but the production time and resource consumption increase
Solution Approach 1:
The cementitious material is pre-formulated with all necessary components and additives to achieve proper curing and strength development directly during the 3D printing process. This preliminary optimization of material composition eliminates the need for separate curing chambers or post-processing treatments, reducing production time while maintaining quality
Data Source
AI summary
A method for providing an architectural component, the method includes (i) receiving, by a computerized system, a request to design a manufacturing process of an architectural component; (ii) determining, by the computerized process, the manufacturing process by applying an interactive design process that takes into account interactions between (a) material composition parameters, (b) architectural design parameters, and (c) manufacturing parameters; wherein the manufacturing process is an additive three dimensional printing process; and (iii) responding to the designed manufacturing process.