Intumescent Fire Protection Joint Seal for Structural Movement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fire protection joints in construction require substantial amounts of sealing material and are prone to installation errors, making them inefficient and difficult to monitor, while also failing to accommodate structural movements and maintain fire resistance over time.
Innovation Solution
A prefabricated elongated seal with intumescent material, featuring opposing support faces, a resilient bridge portion, and a leg portion, is installed in a joint opening, allowing for elastic deformation without changing wall thickness, thus ensuring reliable fire protection and ease of installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a substantial amount of sealing material is used to ensure proper working of the seal over time, then fire protection reliability is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The seal is divided into distinct functional segments: intumescent material segments for fire protection, resilient bridge portions for structural flexibility, and leg portions for mechanical attachment. This segmentation allows each component to perform its specific function efficiently without requiring excessive material throughout the entire seal structure.
Solution Approach 2:
Different portions of the seal have different material properties and thicknesses optimized for their specific functions. The intumescent material is concentrated where fire protection is most critical, while the resilient bridge portions use materials optimized for elasticity and movement accommodation. This local optimization reduces overall material usage while maintaining reliability.
2Reliability
If a substantial amount of sealing material is used to ensure proper working of the seal over time, then fire protection reliability is improved, but ease of installation deteriorates
Solution Approach 1:
The seal components are pre-fabricated with precise dimensions and configurations before installation. The intumescent material is pre-applied to the carrier layer in controlled factory conditions, and the resilient bridge portions are pre-formed with correct geometry. This preliminary preparation eliminates the need for complex on-site application procedures and reduces installation errors.
Solution Approach 2:
The seal design allows for self-positioning and self-adjustment during installation. The resilient bridge portions naturally conform to the joint geometry, and the leg portions automatically align with the construction elements. This self-service capability reduces the skill level required for installers and speeds up the installation process.
3Adaptability or versatility
If the seal is compressed between two faces causing elastic deformation, then adaptability to structural movements is improved, but maintaining constant wall thickness becomes challenging
Solution Approach 1:
The seal employs a thin-walled tubular or profiled structure that is inherently flexible and capable of elastic deformation. The thin walls allow the seal to bend and conform to joint movements while maintaining structural integrity. The flexibility of these thin-walled structures enables the seal to accommodate thermal expansion, seismic movements, and other structural deformations.
Solution Approach 2:
The seal combines materials with complementary properties: the carrier layer provides structural framework, the intumescent material provides fire protection and some elasticity, and the resilient bridge portions provide enhanced flexibility. This composite construction allows the seal to deform elastically under compression while the wall thickness remains substantially unchanged, as each material layer contributes to the overall mechanical response.
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 durable fire protection that accommodates structural movements, reduces material usage, minimizes installation errors, and enhances acoustic properties, while maintaining fire resistance through multiple cycles of dimensional changes.
Implementation Method 1
said seal comprising an intumescent material
Implementation Method 2
said seal being compressed between said two faces, thereby elastically deforming the tubular or profiled cross section while the wall thickness remaining substantially unchanged under said compression
Data Source
Figure 1~2c
Figure 2d~2f
Figure 2g~2i
AI summary
Provided herein is a joint between faces of a first and a second construction element which create a joint opening. The joint comprises an elongated seal which comprises an intumescent material. The seal is compressed between the faces of the construction elements, wherein the seal is deformed while keeping the wall thickness of the seal substantially unchanged.