Expandable Foam Form Liner for Concrete
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Solution Overview
Problem
Current form liners for concrete have fixed size pockets that cannot easily adapt to variations in size and shape of embedded objects like brick, tile, or stone, leading to unsatisfactory leakage or distorted joints in the final product.
Innovation Solution
A form liner manufacturing process involving a substrate with a printed barrier substance and expandable foam, allowing for customizable pocket sizes and shapes to accommodate varying object sizes, with the foam expanding and stiffening to create a flexible joint that fits objects of different dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed size pockets are used in form liners, then manufacturing simplicity is maintained, but adaptability to varying object sizes is lost
Solution Approach 1:
The form liner incorporates expandable foam material that can dynamically adjust its volume and shape to accommodate objects of varying sizes. The foam transitions from a compact state during insertion to an expanded state that conforms to the embedded object, providing adaptability without requiring multiple fixed-size pockets.
Solution Approach 2:
The form liner utilizes materials whose physical properties change under specific conditions - the foam material changes from liquid to solid state and undergoes expansion when exposed to moisture from the concrete, allowing the pocket size and shape to adjust automatically to fit different embedded objects.
2Reliability
If fixed size pockets are used in form liners, then manufacturing precision is simplified, but leakage prevention is compromised
Solution Approach 1:
The form liner employs flexible foam material that can deform and conform to the embedded object's exact dimensions, creating a reliable seal that prevents concrete leakage. This flexibility allows the pocket to adapt to dimensional variations while maintaining sealing integrity.
Solution Approach 2:
The foam material dynamically adjusts its shape and volume after object insertion, expanding to fill gaps and create a tight seal around the embedded object, thereby preventing leakage without requiring precisely pre-defined pocket dimensions.
3Ease of manufacture
If fixed size pockets are used in form liners, then ease of manufacture is maintained, but joint distortion is increased
Solution Approach 1:
The foam material undergoes parameter changes through expansion and curing, transforming from a liquid state during insertion to a rigid solid that maintains the final joint configuration, allowing easy manufacture of the liner while achieving precise joint alignment.
Solution Approach 2:
The dynamic expansion of the foam material allows the form liner to self-adjust to the embedded objects, maintaining even coursing and proper joint alignment without requiring complex pre-manufacturing adjustments or multiple fixed-size templates.
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 enables seamless integration of objects of varying sizes and shapes into concrete, reducing the need for cutting and maintaining even coursing, while providing a durable and customizable form liner that minimizes leakage and distortion.
Implementation Method 1
an expandable foam material is printed between the outline form of the barrier substance. The expandable foam material is then cured such that the expandable foam material is stiffened on the substrate material
Implementation Method 2
The expandable foam material is then cured such that the expandable foam material is stiffened on the substrate material
Data Source
AI summary
A form liner for concrete can be produced according to a manufacturing process. An example manufacturing process includes providing a substrate material, and then printing a barrier substance onto the substrate material in an outline form of a desired pattern. After printing the barrier substance, the example manufacturing process includes printing an expandable foam material in a liquid state between the outline form of the barrier substance. The expandable foam material is then cured such that the expandable foam material is stiffened on the substrate material between the outline form of the barrier substance to provide the desired pattern on the substrate material for use as the form liner for concrete.