Corrosion-Resistant Plastic Dowel Support for Concrete Pavement
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Solution Overview
Problem
Existing dowel systems for supporting concrete panels in residential pavements are prone to corrosion, inconvenient to transport, and difficult to adjust, leading to potential tripping hazards and inefficiencies in installation.
Innovation Solution
A dowel system featuring corrosion-free plastic dowel supports formed through injection molding, with resilient clips and adjustable cradles at different heights to accommodate various pavement slab sizes, allowing for easy assembly and adjustment without fasteners or welding, and enabling secure dowel placement during concrete pouring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional metal dowel supports are used, then structural strength is provided, but corrosion occurs leading to reliability deterioration
Solution Approach 1:
The patent employs a composite construction combining plastic material for the dowel support body with embedded steel reinforcement elements (rebar or mesh) to achieve both corrosion resistance and structural strength. The plastic matrix provides immunity to corrosion while the metal reinforcement maintains load-bearing capacity, resolving the contradiction between corrosion resistance and structural strength.
2Adaptability or versatility
If fixed-height dowel supports are used, then manufacturing simplicity is maintained, but adaptability to different pavement slab sizes is reduced
Solution Approach 1:
The dowel support incorporates an adjustable height mechanism allowing the support structure to be repositioned vertically to accommodate different pavement slab thicknesses. This dynamic adjustment capability enables a single dowel support design to serve multiple applications, achieving adaptability without requiring multiple specialized components for each slab size.
Solution Approach 2:
The dowel support is designed as a modular system with separable components including the support body, adjustable height mechanism, and dowel holding elements. This segmentation allows independent adjustment of the height component while maintaining the integrity of other parts, enabling versatility without proportionally increasing overall system complexity.
3Manufacturing precision
If complex fastening mechanisms are used, then dowel placement precision is improved, but ease of installation is reduced
Solution Approach 1:
The dowel support incorporates self-aligning and self-securing features where the dowel automatically positions itself within the support structure during insertion. The design includes self-adjusting clamping mechanisms that grip the dowel without requiring separate fastening operations, achieving precise placement while maintaining simple installation procedures.
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 a corrosion-free, adjustable, and modular dowel system that prevents tripping hazards, simplifies installation, and accommodates different pavement slab sizes, ensuring accurate dowel placement and allowing for concrete contraction without crack induction.
Implementation Method 1
the dowel support includes at least one resilient clip for resiliently receiving the dowel for supporting the dowel relative to the casting bed
Data Source
AI summary
An apparatus for supporting a level of a concrete element relative to an adjacent concrete element, the apparatus including a dowel for transferring load from the concrete element to the adjacent concrete element and a dowel support for supporting the dowel relative to a casting bed prior to pouring of the concrete, wherein the dowel support is formed of corrosion free material.