Dual Composite Waterproof Structure for Concrete Durability
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Solution Overview
Problem
Existing waterproofing methods for concrete structures face challenges in providing long-term durability, crack resistance, and effective heat shielding while maintaining excellent waterproofing and air permeability properties.
Innovation Solution
A dual composite waterproof structure is developed, featuring an inorganic elastic undercoat body, a mesh-type fiber or chopped fiber reinforced layer, multiple intermediate and impregnated layers, and a top coat layer, which collectively enhance the strength, durability, and waterproofing performance of the concrete structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproof layer is applied on a roof of a building, then waterproofing performance is improved, but crack resistance and long-term durability are insufficient
Solution Approach 1:
The patent applies a composite waterproofing system combining inorganic elastic undercoat body with organic acrylic waterproofing liquid and fiber reinforced sheet. This multi-material composite structure integrates the crack-bridging ability of inorganic materials with the flexibility and tensile strength of organic materials, achieving both immediate waterproofing performance and long-term durability through synergistic material combination.
Solution Approach 2:
The waterproofing system is divided into distinct functional layers: inorganic elastic undercoat body for crack reinforcement, acrylic waterproofing liquid for water resistance, and fiber reinforced sheet for tensile strength. Each layer performs its specific function, and the segmented structure allows optimization of each component for its particular role in achieving both waterproofing and durability.
2Strength
If inorganic materials are used for concrete or mortar, then structural strength is improved, but moisture permeation and aging occur
Solution Approach 1:
The inorganic elastic undercoat body acts as a flexible protective film over the concrete structure. This thin film layer provides moisture resistance while allowing the underlying concrete to maintain its structural strength. The elastic nature of the undercoat body enables it to accommodate structural movements without cracking, maintaining continuous moisture protection.
3Reliability
If composite coating waterproofing method is used, then waterproofing properties are improved, but crack vulnerability over long term increases
Solution Approach 1:
The inorganic elastic undercoat body is applied beforehand to reinforce the concrete structure and bridge potential cracks before the main waterproofing layers are applied. This preparatory reinforcement cushions against future crack development, ensuring that the waterproofing system maintains its integrity and effectiveness over the long term even as the structure undergoes thermal and mechanical stress.
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 dual composite waterproof structure achieves excellent waterproofing, tensile strength, heat blocking, mechanical, and chemical properties, while also providing improved air permeability and crack resistance, thus ensuring a semi-permanent waterproofing solution.
Implementation Method 1
an inorganic elastic undercoat body is applied in the form of plaster to reinforce cracks and the strength of low-density surfaces
Implementation Method 2
a high elasticity and high durability acrylic resin is impregnated into a fiber reinforced sheet to form a multi-layer structure
Implementation Method 3
heat shielding and heat dissipation painting using a heat barrier material
Implementation Method 4
heat shielding and heat dissipation painting using a heat barrier material
Data Source
AI summary
Disclosed is a composite waterproof structure comprising: an inorganic elastic undercoat layer including an inorganic material on a construction surface; a complementary reinforced fiber or chopped fiber layer in the form of a mesh in the middle of an inorganic undercoat body; a first intermediate coat layer disposed on the inorganic elastic undercoat layer; a mesh-type fiber-reinforcing sheet layer attached onto the first intermediate coat layer; first and second impregnated layers provided on the mesh-type fiber-reinforcing sheet layer; a second intermediate coat layer disposed on the first and second impregnated layers; a third intermediate coat layer provided on the second intermediate coat layer; and a first top coat layer.