Parallel Injection Conduit for Multi-Layer Barrier Installation
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Solution Overview
Problem
Existing multi-layer grout wall devices require extensive preparation and installation efforts due to numerous perpendicularly extending tubes, making the injection process cumbersome and time-consuming for creating a continuous watertight barrier in concrete structures.
Innovation Solution
A multi-layer device with an intermediate open-matrix layer and injection conduit members disposed in parallel orientation, allowing for faster and more convenient installation by injecting waterproofing fluids through polymer tubing with resilient openings, and optionally incorporating a pre-applied gel activator to facilitate quicker gelation and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If perpendicularly extending tubes are used for injection, then the waterproofing fluid can be injected into the device, but the preparation work and installation effort become enormous
Solution Approach 1:
The invention extracts the injection function from multiple complex perpendicularly extending tubes and concentrates it into a single flat injection conduit integrated into the waterproofing device. This single conduit can inject fluid through multiple outlets along its length, eliminating the need for numerous separate tubes while maintaining the same injection capability.
Solution Approach 2:
The flat injection conduit serves multiple functions: it acts as both the injection channel and the distribution network for the waterproofing fluid. The conduit has multiple outlets along its length that can be selectively activated, allowing a single component to perform what previously required multiple separate tubes.
2Ease of operation
If perpendicularly extending tubes are used, then injection can be performed, but the installation process becomes time-consuming and cumbersome
Solution Approach 1:
The invention merges the injection conduit with the waterproofing device layers themselves, integrating the injection function directly into the device structure. This eliminates the need for separate tube installation steps and allows the conduit to be laid out and activated as part of the normal installation process, significantly improving installation speed.
Solution Approach 2:
The flat injection conduit is pre-configured with multiple outlets and integrated into the waterproofing device during manufacturing. This preliminary preparation means that during installation, workers simply need to position the device and activate the conduit, rather than installing multiple individual tubes on-site, thereby accelerating the installation process.
3Reliability
If multiple perpendicularly extending tubes are used, then complete filling of the device interior is possible, but preparation and setup steps increase enormously
Solution Approach 1:
The invention extracts the complete filling capability from a system of multiple tubes and implements it through a single flat conduit with multiple outlets. The conduit can be selectively activated at different locations to ensure complete filling of the device interior, maintaining the same reliability as multiple tubes but with far fewer components.
Solution Approach 2:
The flat injection conduit has different outlets distributed along its length, allowing localized injection at specific positions within the device. This enables complete filling of different regions of the device interior by activating specific outlets as needed, providing the same comprehensive coverage as multiple tubes but with a more simplified structure.
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 reduces installation time and effort, enables efficient filling of voids and discontinuities in concrete structures, and ensures a robust, watertight seal with minimal equipment requirements, particularly beneficial for vertical and horizontal applications, including shotcrete scenarios.
Implementation Method 1
polymer tubing having openings which are resiliently movable from a closed to open position when the conduit member is filled with an injection fluid under positive pressure
Implementation Method 2
the first layer being permeable to the injection fluid but at least nearly impermeable to a structural construction material
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The present invention provides a multi-layer barrier assembly or device for post- installation injection of a resin, grout, or other fluid fluid. The barrier device comprises first and second layers defining an intermediate open-matrix layer, and at least one injection conduit member in parallel orientation with respect to the first and second layers and having openings for injecting fluid into the intermediate open-matrix layer. The injection conduit may be located between and in parallel orientation with respect to the first and second layers, along an edge of the first and/or second layers, along an outer face of the first layer (if the first layer is a woven or nonwoven fabric), or at any combination of these locations, to enable fluid to be conveyed into the intermediate open-matrix layer. The invention also provides for use of a gel activator within the barrier device cavity, such as pre-installed on open-matrix structure which used for separating the first and second layers of the barrier device, such that a highly flowable injection fluid can be introduced into the device, and its gelation or hardening will be initiated or accelerated by the presence of the gel activator. This will allow for low power grout pumps to be used and facilitate the sealing of fine cracks in the surrounding concrete.