Composite Mariculture Net Cage Float for Corrosion and Wave Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing marine net cages face issues with high maintenance costs, corrosion, limited resistance to wind and waves, and short service life, particularly with steel cages being expensive and prone to rust, while PE plastic cages are less durable and easily deformed.
Innovation Solution
A construction method combining cement blanket and ECC (chopped fiber reinforced cement slurry) to create a composite floating structure with enhanced toughness and corrosion resistance, involving steps of sealing, hydration, and applying chopped fiber reinforced cement slurry on a net cage frame wrapped with continuous three-dimensional fabric.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel net cage is used, then structural strength is improved, but cost and maintenance cost increase, and corrosion resistance deteriorates
Solution Approach 1:
The patent uses a composite structure combining cement blanket as the main structural material with ECC (engineered cementitious composite) as a reinforcing and protective layer. This composite material approach provides both structural strength and corrosion resistance, eliminating the need for steel while achieving both mechanical performance and durability in marine environments.
Solution Approach 2:
The patent replaces expensive steel materials with cement-based materials that are more economical and inherently corrosion-resistant. The cement blanket and ECC combination provides a cost-effective solution that eliminates the need for costly steel structures and their associated maintenance requirements.
2Ease of manufacture
If PE plastic net cage is used, then cost is reduced, but resistance to wind and waves deteriorates, and structural stability worsens
Solution Approach 1:
The patent employs a composite structure where cement blanket provides the base structural form and ECC provides enhanced mechanical strength and wind/wave resistance. This combination achieves both cost-effectiveness and superior stability, overcoming the limitations of PE plastic while maintaining economical material costs.
Solution Approach 2:
The patent changes the material parameters from PE plastic to cement-based materials, fundamentally altering the structural properties. The cement blanket and ECC combination provides significantly higher strength-to-weight ratio and better resistance to wind and waves compared to PE plastic, while remaining cost-effective.
3Ease of manufacture
If PE plastic net cage is used, then cost is reduced, but service life deteriorates due to ultraviolet degradation
Solution Approach 1:
The patent uses cement blanket and ECC as a composite material system that is inherently resistant to ultraviolet degradation. Cement-based materials provide superior durability and service life compared to PE plastic, which degrades under UV exposure. The composite structure eliminates the UV degradation issue while maintaining cost-effectiveness.
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 method results in a durable, low-maintenance net cage floating body with improved stability, resistance to wind and waves, and extended service life, utilizing widely available materials with excellent durability and environmental friendliness.
Implementation Method 1
spraying water on surfaces of the net cage floating frame to enable cement in the cement blanket to generate hydration reaction, to obtain a substrate of the net cage floating body
Implementation Method 2
applying or spraying chopped fiber reinforced cement slurry on surfaces of the wrapped continuous three-dimensional fabric, wherein after the chopped fiber reinforced cement slurry is solidified
Data Source
AI summary
The present disclosure provides a construction method of a mariculture net cage floating body based on a combination of cement blanket and ECC that includes: step S1, using floating materials to build a net cage floating frame, wrapping around the net cage floating frame with cement blanket, and then spraying water onto surfaces of the net cage floating frame to enable cement in the cement blanket to generate hydration reaction, to obtain a substrate of the net cage floating body; step S2, wrapping a continuous three-dimensional fabric around an outer surface the substrate of the net cage floating body, and then applying or spraying chopped fiber reinforced cement slurry on surfaces of the wrapped continuous three-dimensional fabric. After the chopped fiber reinforced cement slurry is solidified, polishing surfaces of the net cage floating body and then applying a multifunctional marine protective coating.