Barbed Metal Wire Plastic Plate for Concrete Bonding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for applying plastic coatings to concrete and reinforced concrete structures are inefficient and costly, particularly in ensuring static stability and addressing the difference in thermal expansion coefficients between plastic and concrete materials, while also providing adequate corrosion and abrasion resistance.
Innovation Solution
A composite system where a cross-linked, fibre-reinforced plastic plate with embedded metal wire barbs is used, ensuring a strong bond with the concrete structure and overcoming thermal expansion issues, utilizing thermosetting artificial resin like fibreglass polyester and a smooth external surface for optimal hydraulic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plastic coatings are applied to concrete structures to improve corrosion and abrasion resistance, then the resistance to corrosion and abrasion is improved, but the thermal expansion coefficient difference between plastic and concrete causes bonding problems and structural instability
Solution Approach 1:
The plastic coating is divided into multiple layers with different functions: a primer layer for chemical bonding to concrete, intermediate layers for mechanical reinforcement, and a top layer for corrosion and abrasion resistance. This segmentation allows each layer to address specific requirements, including thermal expansion compatibility through the use of fibre-reinforced composite materials.
Solution Approach 2:
The invention uses fibre-reinforced plastic composite materials (such as glass fibre, carbon fibre, or aramid fibre reinforced polymers) that combine the corrosion resistance of plastics with the dimensional stability and thermal expansion characteristics closer to concrete. The composite structure provides both protective functionality and bonding stability.
2Reliability
If thick plastic pipes are used inside existing pipelines to provide corrosion protection, then the corrosion resistance is improved, but the cost increases significantly and static composite action between the plastic pipe and existing pipe cannot be achieved
Solution Approach 1:
Instead of using thick rigid plastic pipes, the invention employs thin flexible plastic coating layers applied directly to the existing pipeline surface. These thin films provide corrosion protection while maintaining cost-effectiveness and allowing the existing pipe structure to continue bearing the mechanical loads, thus achieving both protection and economic efficiency.
Solution Approach 2:
The invention merges the protective function with the existing pipe structure by applying coating layers that bond directly to the pipe surface. This combination allows the old pipe to provide structural support while the new coating provides corrosion protection, eliminating the need for separate thick plastic pipe installations and reducing overall cost.
3Ease of manufacture
If sprayed plastic coatings are applied to concrete structures, then the application process is simplified, but the efficiency and durability of the coating are not satisfactory
Solution Approach 1:
The invention incorporates reinforcement fibres (such as glass fibres, carbon fibres, or aramid fibres) into the plastic coating material before application. This preliminary reinforcement action ensures that the coating has adequate mechanical strength and adhesion properties from the start, preventing common spraying defects and ensuring long-term durability without requiring complex multi-step application processes.
Solution Approach 2:
The use of fibre-reinforced plastic composite materials in sprayable form combines the ease of spray application with enhanced mechanical properties. The fibres provide structural reinforcement while the plastic matrix provides corrosion resistance, achieving both simple application and high durability through material composition rather than process complexity.
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 provides a cost-effective, durable, and stable plastic surface layer that enhances the structural integrity and corrosion resistance of concrete and reinforced concrete structures, ensuring long-term performance and compatibility with concrete materials.
Implementation Method 1
a metal wire is (or metal wires are) fitted, favourably embedded, containing barbs protruding into the concrete material or into the cemented layer
Implementation Method 2
the plastic layer is made of a cross-linked, thermosetting, fibre-reinforced plastic plate
Data Source
Figure 1~2
Figure 3
Figure 4~6
AI summary
The concrete or reinforced concrete body with a plastic surface layer is characterised by that the plastic layer is made of a cross-linked, thermosetting, fibre-reinforced plastic plate, in which a metal wire is (or metal wires are) embedded containing barbs protruding into the concrete material or into the cemented layer in composite action with the concrete material. The procedure aimed at manufacturing such units is characterised by that a plastic plate is fitted at a given distance from the surface of the hardened reinforced concrete unit, especially prefabricated reinforced concrete unit, such as a pipe or tank, to be provided with a plastic layer, in a way that its protruding barbs extend into the gap between the unit and the plastic plate, and then the gap is filled favourably by injecting cemented afterhardening material into it. According to a different procedure the prefabricated reinforced concrete element, especially pipe (1) is placed with its front side on a favourably ring-shaped seal (2) situated on a horizontal production plane; in the unit a pipe- shaped plastic shell (5) with barbs (8) protruding from it is placed facing the internal surface of the unit, at a given distance (k) from it; the gap (7) between the shell (5) and the reinforced concrete unit is sealed with a favourably ring-shaped clamp (6) also fixing the shell (5); and the gap (7) is filled with cemented afterhardening material through one or more injection pipes (4) taken through the opening(s) made in the wall of the reinforced concrete unit at the bottom. The plate structure according , to the invention is characterised by that a metal wire containing barbs (8) is fitted into or/ and to the material of the fibre-reinforced cross-linked thermosetting artificial resin, the barbs (8) of which protrude from the surface of the plate structure facing the concrete or reinforced concrete unit to be connected to it. Such cylindrical plate structures are produced by coiling fibre fleeces impregnated with artificial resin; spraying sand and/ or cut fibre; coiling barbed (8) metal wire (16); finally fastening it by roving coiling.