Composite Coating with Leno Weave Fabric for Crack Bridging

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Solution Overview

Problem

Existing composite systems for road surfaces, particularly those exposed to heavy loads, fail to adequately bridge cracks and maintain moisture and chemical sealing due to viscoelastic coatings tearing under excessive stress, and do not meet durability standards set by regulations such as those from the German Institute for Construction Technology.

Innovation Solution

A composite system comprising a mineral substrate coated with an acrylate resin and a reinforcing fabric, specifically a leno weave glass fiber fabric with high tensile strength, which provides enhanced crack-bridging ability and meets DIN V 18026 standards for protection, physical resistance, and chemical resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If viscoelastic compounds are used to coat heavily stressed substrates, then the coating can bridge cracks to a certain extent, but the coating tears open under excessive tension and loses sealing ability

Engineering Contradiction:

Improvecrack-bridging abilityVSAvoidsealing ability

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The patent applies composite materials by combining viscoelastic compound with fabric reinforcement (textile, glass fiber, or metal mesh). This composite structure allows the coating to maintain both crack-bridging ability and sealing reliability, as the fabric provides tensile strength to prevent tearing while the viscoelastic compound provides adhesion and flexibility.

Inventive Principle:

Principle #40Composite materials

2Strength

If the coating is made tougher to resist tearing, then the crack-bridging ability increases, but the coating becomes less flexible and may fail to adapt to substrate movements

Engineering Contradiction:

Improvetear resistanceVSAvoidflexibility

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The composite of viscoelastic compound and fabric reinforcement creates a material that is both tough and flexible. The fabric provides tear resistance while the viscoelastic compound maintains flexibility and adaptability to substrate movements, resolving the contradiction between strength and adaptability.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

Different components of the composite coating perform different functions: the fabric provides localized tear resistance where needed, while the viscoelastic compound provides localized flexibility and adhesion. This division of functional quality allows the coating to simultaneously achieve both properties.

Inventive Principle:

Principle #3Local quality

3Reliability

If fabric reinforcement is added to increase crack-bridging ability, then the coating meets durability standards, but the application process becomes more complex

Engineering Contradiction:

ImprovedurabilityVSAvoidapplication process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent merges the fabric reinforcement into the coating material itself, creating a pre-combined composite product. This integration simplifies the application process compared to separately applying reinforcement layers, as the composite can be applied as a unified material while still meeting durability standards.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP2839952B1Improved composite system

Publication Date: 2022.10.19 TRIFLEX

Figure 1

AI summary

The invention relates to a composite system comprising a mineral, bituminous or plastic-coated substrate and a layer comprising a fabric and at least one polymer (reinforcing layer).