Layered Polymer Concrete Acid Resistance
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Solution Overview
Problem
Concrete substrates are susceptible to significant damage when exposed to acidic conditions, as existing acid-resistant coatings are thin and prone to abrasion, allowing acid to reach the concrete surface and cause damage.
Innovation Solution
A polymer concrete composition comprising multiple stacked composite layers with a polymer layer and aggregate material, potentially reinforced with acid-resistant materials, is formed layer by layer to achieve desired thickness without shrinkage or cracking, using a vinyl ester resin as a binder and peroxide as a catalyst, reducing the need for coatings and enhancing acid resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a thin layer of acid-resistant coating is applied on concrete substrate, then acid protection is provided, but the coating is prone to abrasion and damage creating pathways for acid penetration
Solution Approach 1:
The concrete structure is segmented into multiple stacked composite layers, each consisting of a polymer layer and aggregate material. This segmentation allows each layer to be relatively thin and resistant to shrinkage while collectively providing substantial acid resistance without the reliability issues of thin coatings.
Solution Approach 2:
The invention uses composite materials by combining polymer layers (vinyl ester resin) with aggregate material (silica or quartz) to create composite layers. This composite structure provides both acid resistance from the polymer and mechanical durability from the aggregate, eliminating the weakness of thin polymer coatings while maintaining acid protection.
2Length of stationary object
If thick layer of polymer concrete is applied in bulk, then sufficient thickness and acid resistance are achieved, but shrinkage causes cracking and deformation resulting in loss of bond to surface
Solution Approach 1:
The thick polymer concrete is divided into multiple thin composite layers stacked together. Each thin layer experiences minimal shrinkage during curing, preventing the cracking and deformation that occurs in bulk applications. The layers are applied sequentially, allowing each to cure properly before the next is added, maintaining manufacturing precision while achieving the desired total thickness.
Solution Approach 2:
Each composite layer is prepared and applied separately before the previous layer fully cures, creating a staged curing process. This preliminary action of building layer by layer allows shrinkage to occur in manageable increments rather than all at once, preventing the catastrophic cracking that would result from bulk application shrinkage.
3Reliability
If multiple stacked composite layers are applied layer by layer, then shrinkage is reduced and cracking is eliminated, but the process requires multiple application steps
Solution Approach 1:
The application process is segmented into discrete composite layers that can be prepared and applied in a systematic sequence. While this requires multiple steps, each layer is relatively thin and can be applied efficiently, and the segmented approach ensures structural integrity by allowing proper curing and bonding between layers, preventing future cracking that would require costly repairs.
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 method results in a polymer concrete that is completely resistant to acid attack, with reduced shrinkage and no cracking or deformation, providing a durable and acid-resistant concrete structure without the limitations of traditional thick-layer applications.
Implementation Method 1
The polymer layer can be prepared from a polymer composition comprising a vinyl ester and a peroxide
Data Source
AI summary
Chemical-resistant polymer concrete and methods of use thereof are described herein. The polymer concrete comprises a polymer layer and aggregates. The polymer layer is formed by reacting an epoxy vinyl ester resin promoted with cobalt and catalyzed by a peroxide. A concrete substrate is formed by layering the polymer layer and aggregates in thin alternating layers until a desired thickness is achieved. This layering method can reduce shrinkage of the concrete, thereby preventing cracking, deformation or debonding.