Eco-Friendly Concrete Mix Optimization for Recycled Aggregate Quality
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Solution Overview
Problem
The low recycling rate of construction waste in Korea, due to quality variation and limited usage of recycled aggregates, leads to increased natural aggregate prices and disposal costs, posing a crisis for the construction industry.
Innovation Solution
A method using Response Surface Methodology (RSM) and Box-Behnken Design to derive optimal mix proportions for eco-friendly concrete, considering factors like recycled aggregate and soil quality, to produce high-quality concrete with minimal variation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If recycled aggregates are used to increase recycling rate, then environmental benefit is improved, but quality variation increases leading to reliability deterioration
Solution Approach 1:
The patent applies parameter changes by systematically varying mix proportions (recycled aggregate content, cement content, water-to-cement ratio) and curing conditions (time, temperature, humidity) to optimize concrete performance. Response surface methodology enables precise adjustment of these parameters to achieve consistent quality despite using recycled aggregates with inherent variability.
Solution Approach 2:
The patent implements dynamics through adaptive optimization of mix designs based on the specific properties of recycled aggregates used. Rather than fixed formulas, the methodology dynamically adjusts proportions and curing parameters to compensate for variations in aggregate quality, ensuring reliable concrete performance across different batches.
2Object-generated harmful factors
If natural aggregate resources are depleted, then environmental sustainability is improved, but production cost increases
Solution Approach 1:
The patent implements discarding and recovering by utilizing construction waste and recycled aggregates that would otherwise be discarded. The methodology transforms these waste materials into valuable concrete components through optimized mixing and curing processes, thereby reducing the need for virgin natural aggregates and lowering material costs.
Solution Approach 2:
The patent applies parameter changes to optimize the performance of recycled aggregates, adjusting mix proportions and curing conditions to ensure that recycled materials meet or exceed the performance requirements of natural aggregates, making them economically viable alternatives.
3Reliability
If quality certification system is implemented, then reliability is improved, but gap between certification and actual operation increases reducing effectiveness
Solution Approach 1:
The patent applies self-service by providing factory-specific optimal mix proportions and curing parameters that enable consistent quality production without requiring complex external certification processes. The methodology empowers manufacturers to self-regulate and maintain quality standards through scientifically optimized procedures tailored to their specific equipment and material conditions.
Data Source
AI summary
According to one embodiment of the present disclosure, a method for manufacturing eco-friendly concrete using a response surface methodology (RSM) is provided, the method comprising: a step (S1) of determining a plurality of experimental factors to be considered in manufacturing the eco-friendly concrete; and a step (S2) of deriving optimal mix proportions of the eco-friendly concrete using a Box-Behnken Design based on the experimental factors.