Dynamic Volume-Changing Holding Portion for Construction Joint Sealing
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Solution Overview
Problem
Conventional joint sealing profiles face challenges in easy installation and removal due to the need for significant deformation of holding portions, which increases installation effort, especially in narrow and inaccessible recesses.
Innovation Solution
A joint sealing profile with holding portions made of material compositions that can be chemically, thermally, or physically activated to change volume, allowing for reversible thickening or swelling, enabling easier installation and removal by creating a form-fitting or force-locking connection only when needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the holding portion is made thicker to maximize deformation and improve sealing effect, then the sealing performance is improved, but the installation and removal effort increases significantly
Solution Approach 1:
The holding portion transitions from a static thickened structure to a dynamic structure that can change its dimensions on demand. The material composition is activated by chemical, thermal, and/or physical exposure to change volume, allowing the holding portion to be thin during installation and thick during operation for optimal sealing.
Solution Approach 2:
The invention changes the physical parameter of the holding portion by using a material composition that can alter its volume in response to external stimuli (chemical, thermal, physical exposure). This allows the holding portion to adapt its thickness dynamically, resolving the contradiction between needing it thick for sealing and thin for easy installation.
2Reliability
If the holding portion is made thicker to engage better in the recess, then the form-locking fit is improved, but the accessibility requirement for installation tools increases
Solution Approach 1:
The holding portion is designed with dynamic volume change capability, allowing it to be compact during installation (improving accessibility) and expand afterward to achieve the necessary form-locking fit in the recess.
Solution Approach 2:
The installation process is separated from the sealing engagement process. The holding portion is inserted in its unactivated, compact state through accessible openings, and then the material composition is activated to achieve the form-locking fit, decoupling the two requirements.
3Reliability
If the holding portion is deformed significantly during installation, then the sealing contact is improved, but the installation time increases
Solution Approach 1:
The holding portion is pre-formed with the appropriate shape and size for easy insertion, eliminating the need for significant deformation during installation. The sealing contact is achieved afterward through activation of the material composition, not through installation-time deformation.
Solution Approach 2:
The sealing contact is achieved through dynamic volume change of the material composition after installation, rather than through static pre-deformation during installation. This separates the installation phase (quick, minimal deformation) from the sealing phase (activated volume change).
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
This solution allows for easier installation and removal of the joint sealing profile while maintaining or improving sealing performance, as the volume change can be controlled and reversed, reducing installation effort and enhancing sealing effectiveness.
Implementation Method 1
the holding portion has at least in sections a material composition which can be activated in a targeted manner by a chemical, thermal and/or physical exposure so that the volume of the holding portion changes
Implementation Method 2
the holding portion has at least in sections a material composition which can be activated in a targeted manner by a chemical, thermal and/or physical exposure so that the volume of the holding portion changes
Implementation Method 3
the holding portion has at least in sections a material composition which can be activated in a targeted manner by a chemical, thermal and/or physical exposure so that the volume of the holding portion changes
Data Source
AI summary
A construction joint bridging device with a joint sealing profile and a joint sealing profile as such, as well as a method for producing a joint sealing profile and a method for producing and disassembling a construction joint bridging device. The joint sealing profile consisting at least partially of an elastic material and having a holding portion for fastening to the construction joint bridging device, wherein the holding portion has at least in sections a material composition which can be activated in a targeted manner by chemical, thermal and physical exposure so that the volume of the holding portion changes.