Waste-Based Composite Aggregate with RPMC Shell
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Solution Overview
Problem
Current aggregates used in construction lack sustainable solutions for waste treatment and do not meet the mechanical and physico-chemical requirements for construction, public works, and civil engineering projects.
Innovation Solution
Development of aggregates comprising waste fragments, such as household and industrial waste, bound together by a micro-concrete with a carbonated hydraulic binder and encased in a reactive powder micro-concrete shell, which meets the necessary mechanical and physico-chemical standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If waste materials are used to create aggregates, then waste treatment is improved, but mechanical strength and physico-chemical characteristics deteriorate
Solution Approach 1:
The patent creates composite aggregate structures by encasing waste fragments in a shell of reactive powder micro-concrete (RPMC). This composite approach combines the waste material core with a high-strength RPMC shell, achieving both waste utilization and mechanical strength requirements for construction aggregates
Solution Approach 2:
The patent transforms waste materials through chemical parameter changes by subjecting them to inerting treatment with quicklime-based compositions, altering their physico-chemical properties to meet construction standards while maintaining waste treatment benefits
2Stability of the object's composition
If waste fragments are bound with micro-concrete, then structural integrity is improved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the aggregate manufacturing process into distinct stages: first forming cores from waste fragments bound with micro-concrete, then separately applying an RPMC shell. This segmentation allows each stage to be optimized independently, managing manufacturing complexity while ensuring structural integrity
Solution Approach 2:
The micro-concrete with carbonated hydraulic binder acts as an intermediary material that binds waste fragments together to form stable cores, which are then encased in the RPMC shell. This intermediary binding agent simplifies the overall manufacturing process by providing a reliable intermediate structure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed solution effectively addresses waste treatment by repurposing waste materials into aggregates that meet the required standards for construction, offering a sustainable and viable alternative to traditional aggregates.
Implementation Method 1
a micro-concrete with carbonated hydraulic binder which has undergone hydraulic setting
Implementation Method 2
a shell formed by a reactive powder micro-concrete (RPMC) which has undergone hydraulic setting
Implementation Method 3
micro-concrete with carbonated hydraulic binder
Data Source
AI summary
Base grains intended to be assembled together to form granules for a composition of construction materials useful in the field of building, public works and civil engineering, characterised in that each base grain consists of a core formed by an agglomerate of fragments of compressed waste and associated with each other by a micro-concrete with a carbonated hydraulic binder which has undergone hydraulic setting, the core being enclosed in a shell formed by a reactive powder micro-concrete (RPMC) which has undergone hydraulic setting.