Recess Filling Material Kit for Corrosion Protection
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Solution Overview
Problem
Existing recess filling methods for underground pipelines and structures face issues such as corrosion of bolts and nuts, shrinkage of resin materials during curing, and inadequate bonding to reinforcing steel and concrete, leading to structural weaknesses and frequent repair needs.
Innovation Solution
A recess filling material kit comprising two radically polymerizable resin compositions, one with an expansive additive to minimize shrinkage and the other with a primer for metal bonding, ensuring strong initial bonding to concrete, steel, and reinforcing steel structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cement mortar, epoxy resin mortar, or polyurethane resin is used to fill recesses, then corrosion protection of bolts and nuts is improved, but the materials deteriorate over time due to age-related degradation
Solution Approach 1:
The patent changes the chemical composition parameters of the filling material by using a two-component system (polymer powder and liquid monomer) that cures to form a crosslinked network structure. This chemical transformation provides long-term durability and resistance to age-related deterioration while maintaining corrosion protection functionality.
Solution Approach 2:
The invention uses a composite material system combining polymer powder, liquid monomer, and curing agent to create a filled resin composition. This composite approach provides both immediate corrosion protection and long-term structural stability, resolving the contradiction between initial protection and lasting durability.
2Strength
If radically polymerizable resin composition is used for filling, then initial bonding to concrete and steel is improved, but shrinkage occurs during curing that compromises structural integrity
Solution Approach 1:
The patent modifies the polymerization parameters by controlling the ratio of polymer powder to liquid monomer and selecting appropriate curing agents. This optimization reduces shrinkage during curing while maintaining strong initial bonding to concrete and steel structures, resolving the contradiction between bonding strength and dimensional stability.
3Productivity
If existing filling materials are used for repair work, then construction speed is improved, but bonding reliability to reinforcing steel and concrete structures is insufficient
Solution Approach 1:
The patent incorporates a primer component in the filling material formulation that is applied to the surface before the main filling. This preliminary bonding layer ensures reliable adhesion to reinforcing steel and concrete structures, while the overall two-component system maintains fast curing speeds for productive construction.
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 long-term protection against corrosion, wear, and environmental factors, ensuring the structural integrity of pipelines and underground structures by reducing shrinkage and enhancing bonding capabilities.
Implementation Method 1
a first radically polymerizable resin composition comprising a first radically polymerizable compound (A-1), a first radically polymerizable unsaturated monomer (B-1), an acidic compound (C), and a first radical polymerization initiator (D-1)
Implementation Method 2
a second radically polymerizable resin composition comprising a second radically polymerizable compound (A-2), a second radically polymerizable unsaturated monomer (B-2), a second radical polymerization initiator (D-2), an expansive additive (J), and an aggregate (K)
Data Source
AI summary
The invention provides a recess filling material kit, a cured product thereof, and a recess filling method using the same, which can provide a method for eliminating construction defects such as defects in initial bonding with concrete and steel materials used in recesses. The recess filling material kit of the present invention contains first and second radically polymerizable resin compositions. The first radically polymerizable resin composition contains a first radically polymerizable compound (A-1), a first, radically polymerizable unsaturated monomer (B-1), an acidic compound (C), and a first radical polymerization initiator (D-1); and the second radically polymerizable resin composition contains a second radically polymerizable compound (A-2), a second radically polymerizable unsaturated monomer (B-2), a second radical polymerization initiator (D-2) an expansive additive (J), and an aggregate (K).