Intumescent Foam Through-Penetration Device for Concrete Anchoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing through-penetration devices for protecting cables and pipes in building components lack secure fire protection and cost-effective manufacturing methods, especially when cast into concrete building components.
Innovation Solution
A through-penetration device with a molded body made of intumescent foam material, featuring radially extending protrusions for anchoring in concrete, and a waterproof skin, integrated with a membrane for smoke-proof closure and glass fibers for enhanced stability, produced using foam molding techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If through-penetration devices are installed retroactively into openings in building components, then fire protection is provided, but manufacturing cost and installation complexity increase
Solution Approach 1:
The through-penetration device is designed to be cast into the building component together with the concrete, rather than installed retroactively. The protrusions are formed during the casting process itself, creating undercuts that anchor the device in place. This preliminary integration eliminates subsequent installation steps and reduces overall manufacturing and installation costs while maintaining reliable fire protection.
2Reliability
If protrusions are added to the molded body for anchoring in concrete, then secure fire protection is achieved, but device complexity increases
Solution Approach 1:
The anchoring protrusions are integrated directly into the molded body of the through-penetration device during the foam molding process. The protrusions are formed as part of the same casting operation that creates the main body, eliminating the need for separate anchoring components or additional assembly steps. This merging of functions reduces device complexity while ensuring secure anchoring in concrete for reliable fire protection.
3Ease of manufacture
If intumescent foam material is used for the molded body, then cost-effective production is achieved, but manufacturing precision may be compromised
Solution Approach 1:
The foam molding process parameters are optimized to achieve both cost-effective production and adequate manufacturing precision. The foam expansion ratio, curing time, and mold temperature are controlled within specific ranges to ensure the protrusions form with sufficient dimensional accuracy for proper anchoring, while maintaining the cost advantages of foam molding. This parameter optimization balances production cost and manufacturing precision.
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 secure fire protection and cost-effective production by anchoring the device within the concrete building component, ensuring effective flame retardation and easy installation while maintaining structural integrity during fires.
Implementation Method 1
the mix of substances will be homogeneously distributed within the binder. The interlinking carrier is preferably selected from among the group consisting of polyurethanes, phenolic resins, polystyrenes, polyolefins—such as polyethylene and/or polybutylene, melamine resins, melamine resin foams, synthetic and natural rubber, cellulose, elastomers, and mixtures thereof, with polyurethanes being preferred. The intumescent mix of substances comprises the fire protection additives that are common and known to the person skilled in the art, which additives will, in case of fire, i.e., when exposed to heat, start foaming and thus form a foam that hinders the propagation of flames
Implementation Method 2
the interlinking carrier can contain, as an ablative additive, an inorganic compound that contains water in solid form; e.g. as crystallization water, and will not dry out at temperatures of up to 100° C., but will release the water in case of fire at temperatures from 120° C. on, thus being able to cool components; this will preferably be an inorganic hydroxide or hydrate, in particular, aluminum hydroxide, aluminum oxide hydrates or partially hydrated aluminum hydroxides, that releases water when exposed to the fire's temperature or flames
Data Source
AI summary
A through-penetration device has a molded body consisting essentially of an intumescent foam material and having at least one penetration opening for one line. An outer contour of the molded body has protrusions extending radially outward for anchoring within a cast building component, which protrusions form undercuts in building component as the building component is being cast. In addition, a mounting plate that can be axially pushed onto the through-penetration device, sealing the penetration openings, is provided. As the through-penetration device is produced, a liquid coating material is applied to a surface of a foaming mold, and then a foam mass containing a predetermined percentage of intumescent material is introduced into the foaming mold. After a foaming process, the coating material forms a water-impermeable skin on the foamed molded body.