Epoxy Paving Composition for Wet Aggregate Strength Retention
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Solution Overview
Problem
Paving materials for landscape paving often lose strength when exposed to rain or humid environments, especially when using wet aggregates, leading to reduced curability and structural integrity.
Innovation Solution
A paving material composition comprising an epoxy resin, a reaction product of styrene and a polyamine compound, and an aggregate, with specific mass ratios and moisture content, to enhance strength retention and curability even in humid conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional epoxy resin compositions are used with wet aggregate, then the paving material can be manufactured, but the curability decreases and strength is reduced
Solution Approach 1:
The invention changes the chemical parameters of the curing agent by using a polyamine compound with specific structural features (formula 1) that has higher reactivity and better water resistance. This parameter change in the curing agent's chemical structure allows it to maintain curability and produce high strength even when water is present from wet aggregate
Solution Approach 2:
The invention creates a composite curing system by combining a specific epoxy resin with a polyamine compound curing agent that has unique molecular structure. This composite material system provides synergistic effects where the curing agent's structure (with X being phenylene group) enables both good curability with wet aggregate and high final strength
2Strength
If paving materials are designed for high initial strength, then they can meet structural requirements, but their strength decreases after exposure to rain and humid environments
Solution Approach 1:
The invention changes the chemical composition parameters by selecting a polyamine compound with specific structural characteristics (formula 1) that provides both high initial strength and excellent water resistance. The phenylene group structure in the curing agent creates a crosslinked network that is inherently more stable in humid environments, preventing strength degradation
Solution Approach 2:
The invention converts the harmful effect of water exposure into a beneficial outcome by using a curing agent structure that not only resists water but actually benefits from the chemical environment created during curing in the presence of moisture, resulting in enhanced durability and strength retention in outdoor conditions
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 composition forms a structure with high strength and excellent strength retention in humid environments, maintaining good curability even with wet aggregates.
Implementation Method 1
an epoxy resin curing agent containing a reaction composition (A) containing a reaction product of styrene and a polyamine compound
Data Source
AI summary
A paving material composition containing: an epoxy resin; an epoxy resin curing agent containing a reaction composition (A) containing a reaction product of styrene and a polyamine compound represented by the following formula (1); and an aggregate. H2N-CH2-X-CH2-NH2 (1) wherein X is a phenylene group.