Chalk Core Dike with Water-Repellent Coating
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Solution Overview
Problem
Conventional sea walls made entirely of artificial materials have a high ecological impact due to resource consumption and environmental pollution, and chalk cores used in dike construction are prone to disintegration when exposed to water.
Innovation Solution
A dike design featuring a chalk core covered with a shell, where the chalk core is treated with a water-repellent compound to protect it from water exposure during construction, and the chalk:water-repellent compound mass ratio is optimized between 2000:1 and 20000:1 to enhance mechanical strength and reduce ecological footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If chalk is used as the core material for ecological reasons, then environmental impact is reduced, but the chalk disintegrates when exposed to water during construction
Solution Approach 1:
The patent applies a water-repellent compound to the chalk core before the dike is completed and before water exposure occurs during construction. This preliminary protective action prevents the chalk from disintegrating when water is later introduced, allowing the ecological benefits of chalk to be realized without compromising structural integrity.
Solution Approach 2:
The water-repellent compound acts as an intermediary substance between the chalk core and water. This intermediate layer prevents direct contact between water and the porous chalk material, thereby preventing disintegration while allowing the chalk to maintain its ecological advantages.
2Strength
If chalk core is left in open air for several days to settle and strengthen, then mechanical properties are improved, but the chalk is exposed to water during this period
Solution Approach 1:
The water-repellent compound is applied to the chalk core before the settling period begins. This preliminary protection allows the chalk to undergo the necessary settling and strengthening process in open air without risking water exposure and disintegration during this critical time period.
Solution Approach 2:
The water-repellent compound provides beforehand cushioning against water exposure during the settling period. This prior protective measure ensures that even if water contact occurs during the several days the chalk is left in open air, the chalk will not disintegrate and can complete its strengthening process.
3Reliability
If conventional artificial materials are used for sea walls, then structural integrity is ensured, but ecological impact and carbon cost increase
Solution Approach 1:
The patent creates a composite structure combining chalk (natural material) with a water-repellent compound (protective coating). This composite approach allows the dike to achieve the structural integrity previously only attainable with artificial materials while using primarily natural chalk, thereby reducing ecological impact.
Solution Approach 2:
The patent changes the physical-chemical parameters of the chalk by applying a water-repellent compound coating. This parameter change (adding water repellency) allows the chalk to maintain structural integrity in water environments, previously a property only associated with artificial materials.
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 effectively protects the chalk core from water, maintaining structural integrity and reducing environmental impact by using a natural, abundant material while minimizing the use of artificial materials.
Implementation Method 1
a layer of water-repellent compound is formed on the chalk core to protect the chalk core from water
Data Source
Figure 1
AI summary
The present invention relates to a dike comprising a chalk core