Water-Permeable Paving with Ecological Layer for Heat Island Mitigation
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Solution Overview
Problem
Conventional concrete paving is water impermeable, leading to surface flooding and environmental damage, as it blocks rainwater from penetrating into the soil, disrupting the ecological balance and microorganism habitats, and contributing to heat island effects.
Innovation Solution
A water-permeable artificial paving system comprising an underground ecological gradation layer and a surface paving layer with drainpipes, allowing rainwater to penetrate into the soil, supporting microorganism habitats, and regulating temperature and humidity through water storage and vapor release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional concrete paving is used, then structural strength and durability are improved, but water permeability deteriorates leading to surface flooding
Solution Approach 1:
The patent employs porous concrete material for the paving layer, which inherently possesses void spaces and interconnected pores that allow rainwater to permeate through the paving surface into the underlying soil. This porous structure maintains structural integrity while enabling water transmission, directly resolving the contradiction between strength and water permeability.
Solution Approach 2:
The patent creates a composite paving system combining porous concrete with an ecological gradation layer and vegetation. This composite structure integrates multiple materials with complementary properties: the porous concrete provides structural strength and initial water transmission, while the ecological layer enhances water infiltration and retention, together achieving both strength and reliable water permeability.
2Ease of manufacture
If water impermeable paving is used, then ease of construction is improved, but environmental harm worsens due to blocked rainwater penetration
Solution Approach 1:
The patent segments the paving system into distinct functional layers: a porous concrete paving layer for water transmission, an ecological gradation layer for enhanced infiltration and soil protection, and vegetation components for ecological benefits. This segmentation maintains construction simplicity through standardized layers while eliminating environmental harm by ensuring rainwater can penetrate through each layer to the soil.
3Stability of the object's composition
If concrete pores are blocked by calcium oxide, then structural stability is improved, but water permeability deteriorates significantly
Solution Approach 1:
The patent specifies using porous concrete with controlled pore structures that are designed to maintain water permeability. The porous material's composition and structure are optimized to prevent calcium oxide accumulation from blocking pores, ensuring that structural stability does not come at the cost of water permeability degradation.
4Object-affected harmful factors
If rainwater is discharged through sewage systems, then flood risk is reduced, but water resource loss worsens due to discharge to seas or oceans
Solution Approach 1:
The patent implements a self-service rainwater management system where the porous paving and ecological gradation layer automatically infiltrate and retain rainwater on-site. This eliminates the need for external sewage system discharge, allowing the ground to naturally manage water infiltration while the vegetation and soil structure retain water for evaporation and transpiration, thus preventing both flooding and water resource loss to oceans.
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 system effectively reduces flooding risks, enhances water recycling, maintains soil health, and alleviates heat island effects by promoting water permeability and creating a favorable environment for microorganisms, thus addressing global warming concerns.
Implementation Method 1
allows rainwater to be efficiently and effectively conducted into the underground gradation layer to effect storage of rainwater and reduction of surface flooding
Implementation Method 2
when contacting the atmosphere in a dry or hot environment to generate a heat exchange effect with the atmosphere, and may automatically regulate the humidity
Data Source
AI summary
Provided is a method for manufacturing artificial paving that helps improving global warming. A water permeable paving layer is provided under which a drain layer, which includes gravels or sand, is selectively formed, and an interfacing layer is formed under the drain layer. An ecological gradation layer is set and rammed. The underside ecological gradation layer provides an effect of supporting and, due to the ecological gradation layer containing therein hollow bodies, which can be embodied as disaster-prevention water-storage hollow bodies or earth-improvement hollow bodies or microorganism-culture hollow bodies or water-keeping hollow bodies as desired, allows rainwater falling on ground surface to quickly penetrate down into the underground location, makes the ecological gradation layer effectively preserve water in high water content, and prompt breeding of microorganisms, whereby when the atmosphere is of a high temperature, underground humidity can be released through drainpipes that constitute the water permeable paving.