Pre-applied Membrane Mineral Additive Bonding
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Solution Overview
Problem
Existing pre-applied membranes struggle to achieve an intimate bond with post-poured building materials, such as concrete, which is essential for effective structural waterproofing and gas protection.
Innovation Solution
A laminated pre-applied membrane comprising a polyethylene layer and a rubber or rubber-based layer with a mineral additive, such as kaolin or metakaolin, to enhance the bonding process between the membrane and the building material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional pre-applied membrane is used without mineral additives, then the membrane structure remains simple, but the bonding strength and adhesion to post-poured building materials are insufficient
Solution Approach 1:
The patent applies composite materials by combining a rubber or rubber-based layer with mineral additives (such as silica, kaolin, or metakaolin) to create a laminated pre-applied membrane. This composite structure enhances the bonding strength and adhesion properties of the membrane to post-poured building materials like concrete, while maintaining the simplicity of the overall membrane configuration through a two-layer composition.
2Reliability
If mineral additives are added to the rubber layer to enhance bonding, then the adhesion to building materials improves, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies parameter changes by modifying the physical and chemical properties of the rubber layer through the addition of mineral additives. These additives alter the surface characteristics and bonding parameters of the rubber layer, enabling improved adhesion to building materials. The manufacturing process remains relatively straightforward as the minerals are incorporated during the rubber processing stage, without requiring complex additional manufacturing steps.
3Loss of time
If the membrane uses only polyethylene layer, then the manufacturing process is simple, but the bonding time is excessive and initial bond is weak
Solution Approach 1:
The patent applies preliminary action by incorporating mineral additives into the rubber layer during manufacturing, which prepares the membrane surface in advance for bonding to building materials. The mineral additives are pre-positioned in the rubber layer to facilitate rapid adhesion when the membrane is applied to concrete or other building materials, significantly reducing the bonding time required during construction without complicating the manufacturing process.
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 addition of mineral additives significantly improves the initial bond between the membrane and the building material, reducing bonding time and enhancing the long-term adhesion and performance of the membrane.
Implementation Method 1
The addition of mineral additives significantly improves the initial bond between the membrane and the building material
Data Source
AI summary
A laminated pre-applied membrane is provided. The membrane comprises a layer of polyethylene and a rubber or rubber-based layer.