3D Concrete Printing Mixture Optimizes Strength and Wastage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current concrete mixtures do not offer efficient solutions with specific materials to enhance their performance in terms of strength, durability, and cost-effectiveness.
Innovation Solution
A novel concrete mixture is developed using a specific set of materials, including 0-3 mm sand unwashed, 0-2 mm sand unwashed dune sand, Portland cement, fly ash, water, mid-range admixture, and viscosity modifying admixture, which are optimized for use in 3D concrete printing devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If conventional concrete mixtures are used, then material availability is ensured, but material wastage increases and cost-effectiveness decreases
Solution Approach 1:
The patent changes the parameters of the concrete mixture by using specific material proportions (0-3mm sand: 1200-1500 kg/m³, 0-2mm sand: 800-1000 kg/m³, fly ash: 150-200 kg/m³, etc.) and adding chemical admixtures (viscosity modifying admixture 5-15 kg/m³, mid-range water reducing admixture 3-8 kg/m³) to optimize the mix for 3D printing, thereby reducing material wastage while maintaining cost-effectiveness
Solution Approach 2:
The patent creates a composite concrete mixture combining multiple materials with different properties: two types of sand (0-3mm and 0-2mm), Portland cement, fly ash, water, and chemical admixtures. This composite approach optimizes the mixture for 3D printing efficiency, reducing both material wastage and costs while improving printability
2Strength
If conventional concrete mixtures are used, then basic structural properties are achieved, but strength and durability of hardened concrete are insufficient
Solution Approach 1:
The patent optimizes the mixture parameters including water-to-cement ratio, sand proportions, and admixture dosages to achieve enhanced strength and durability properties in the hardened concrete while maintaining printability requirements
Solution Approach 2:
The inclusion of fly ash as a supplementary cementitious material alongside Portland cement, combined with specific sand gradations and chemical admixtures, creates a composite system that improves both strength and durability of the hardened concrete
3Productivity
If 3D concrete printing is implemented, then labor costs and project timelines are reduced, but material wastage increases
Solution Approach 1:
The patent adjusts the concrete mixture parameters (viscosity, flowability, layer adhesion properties) through specific material proportions and admixture additions to enable efficient 3D printing deposition with minimal material wastage, maintaining productivity benefits while reducing loss
Data Source
AI summary
A method, includes receiving, by a three-dimensional (3D) concrete printing device, aggregates. The method includes dry mixing, by the 3D concrete printing device, the aggregates. The method includes receiving, by the 3D concrete printing device, cement and fly ash. The method includes receiving, by the 3D concrete printing device, water. The method includes receiving, by the 3D concrete printing device, mid-range water reducing admixture. The method includes receiving, by the 3D concrete printing device, additional water. The method includes receiving, by the 3D concrete printing device, additional mid-range water reducing admixture. The method includes generating, by the 3D concrete mixer, concrete.