Textile Grid Reinforcement for Concrete Repair
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Solution Overview
Problem
Existing methods for repairing and reinforcing old concrete structures face challenges such as adhesiveness issues due to moisture exposure and limited resistance to fire and chemical corrosion, particularly with organic adhesives used in fiber reinforcement methods.
Innovation Solution
A method utilizing a textile grid reinforcement coated with a coating material to improve adhesiveness, combined with a highly durable inorganic binder offering chloride penetration resistance or chemical resistance, is applied to old concrete structures, replacing organic adhesives and ensuring strong adhesion and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If organic adhesive is used to adhere fiber sheet to structure, then fiber reinforcement can be applied, but the adhesive loses adhesiveness when exposed to moisture and cannot be applied on wet surfaces
Solution Approach 1:
The patent changes the fundamental parameter of the adhesive material from organic to inorganic binder. The inorganic binder is specifically designed to maintain its bonding properties in wet conditions and high temperatures, fundamentally altering the chemical composition to resolve the contradiction between ease of operation on wet surfaces and reliability in moisture exposure.
Solution Approach 2:
The patent uses composite materials by combining inorganic binder with fiber reinforcement (carbon fiber, aramid fiber, or glass fiber). This composite approach creates a reinforcement system that is inherently resistant to moisture and fire, eliminating the vulnerability of organic adhesives while maintaining structural integrity.
2Strength
If organic adhesive is used for fiber reinforcement, then bonding can be achieved, but the adhesive burns at high temperature and loses adhesiveness
Solution Approach 1:
The patent changes the chemical composition parameter from organic to inorganic binder, which fundamentally alters the thermal properties. The inorganic binder maintains bonding strength at high temperatures and does not burn, directly resolving the contradiction between maintaining bonding strength and resisting fire.
Solution Approach 2:
The patent replaces the vulnerable organic adhesive with a durable inorganic binder that does not degrade under thermal stress, effectively creating a fire-resistant reinforcement system that maintains its functional properties throughout the service life of the structure.
3Object-affected harmful factors
If textile grid reinforcement is used with inorganic binder, then fire resistance and moisture resistance are improved, but adhesion to the substrate may be reduced compared to organic adhesives
Solution Approach 1:
The patent introduces a coating material as an intermediary layer on the textile grid reinforcement. This coating serves as a mediator that enhances the chemical or physical bonding between the inorganic binder and the fiber reinforcement, ensuring adequate adhesion strength while maintaining the fire and moisture resistance benefits of the inorganic system.
Solution Approach 2:
The patent creates a multi-layer composite structure consisting of the textile grid reinforcement, coating material, and inorganic binder. This composite approach ensures that each component contributes its specific properties: the fiber provides tensile strength, the coating provides adhesion, and the inorganic binder provides fire and moisture resistance.
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 solution provides enhanced refractory performance, resistance to moisture, and effective reinforcement of concrete structures exposed to harsh environments, including those prone to fire and chemical corrosion, while maintaining structural integrity and extending the lifespan of old concrete facilities.
Implementation Method 1
a highly durable inorganic binder having chloride penetration resistance performance or chemical resistance performance
Implementation Method 2
a textile grid reinforcement coated with a coating material to improve adhesiveness with an old concrete structure
Implementation Method 3
a chloride penetration resistant inorganic binder having chloride penetration resistance performance
Implementation Method 4
a chemical resistant inorganic binder having chemical resistance performance
Data Source
AI summary
Provided are a concrete structure repaired and reinforced using a textile grid reinforcement and a highly durable inorganic binder and a method of repairing and reinforcing the same, capable of easily repairing and reinforcing an old concrete structure by adhering a textile grid reinforcement, which is coated with a coating material to improve adhesiveness, to the old concrete structure and by adhering a textile grid reinforcement selectively using a highly durable inorganic binder having chloride penetration resistance performance or chemical resistance performance according to a use environment and a reinforcement purpose, that is, by adhering a textile grid reinforcement using an inorganic binder such as cement in place of an organic adhesive. Further, the concrete structure has excellent refractory performance because both the textile grid reinforcement such as a carbon fiber and the highly durable inorganic binder are incombustible materials, and can be effectively applied to reinforcing facilities exposed to the danger of fire.