Ribbed Polystyrene Sanitary Slab for Insulation and Ventilation
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Solution Overview
Problem
Existing sanitary slabs face challenges in efficiently transmitting loads, preventing water and gas transmission, minimizing temperature loss, and providing insulation and ventilation, while being cost-effective and structurally sound.
Innovation Solution
A thermally insulated ventilated sanitary slab system using high-density polystyrene parts shaped as ribbed vaults with intersecting semi-cylinders, incorporating a ventilation system and a duct for gas exchange, and a perimeter confinement low wall for structural support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mass concrete slab on gravel bedding is used, then load transmission capability is improved, but water absorption and moisture transmission increase
Solution Approach 1:
The slab is segmented into a concrete layer and a separate gravel bedding layer with ventilation channels, allowing each layer to perform its specific function independently - the concrete provides strength while the gravel layer with channels handles moisture drainage and ventilation
Solution Approach 2:
The gravel bedding acts as an intermediary layer between the concrete slab and the natural field, preventing direct contact between water and concrete while still allowing load transmission through the interlocking structure
2Object-affected harmful factors
If sanitary floor with ventilation is used, then moisture transmission is reduced, but construction cost and complexity increase
Solution Approach 1:
The ventilation channels and moisture drainage functions are merged into a single integrated gravel bedding structure with built-in channels, eliminating the need for separate ventilation systems and reducing construction complexity
Solution Approach 2:
The gravel bedding layer serves multiple functions simultaneously: it provides ventilation channels for moisture evaporation, acts as a drainage system, serves as a thermal insulation layer, and maintains structural stability, replacing multiple separate systems
3Temperature
If raised slab with vaults is used, then insulation capability is improved, but ventilation efficiency deteriorates
Solution Approach 1:
The gravel bedding creates a porous structure with interconnected channels that allow efficient air flow for ventilation while the void spaces provide thermal insulation through reduced heat conduction
4Ease of manufacture
If lost polypropylene formwork is used, then construction simplicity is improved, but thermal insulation and gas protection capabilities deteriorate
Solution Approach 1:
The system uses a composite structure combining concrete with a gravel bedding layer containing ventilation channels, where the gravel and concrete work together to provide both structural integrity and thermal insulation plus gas protection capabilities
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 provides thermal insulation, moisture and gas protection, sound insulation, efficient ventilation, and structural strength, while being cost-effective and easy to implement, with improved load-bearing capacity and resistance to deformation.
Implementation Method 1
minimize temperature losses from the indoor environment to the field
Implementation Method 2
through holes it was possible to ventilate the intrados of the floor, which as an air chamber meant a substantial advance
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Device for obtaining thermally insulated ventilated sanitary slabs, comprising a plurality of parts (1), such that each part (1) is in the shape of a ribbed vault (5) and is made of high-density polystyrene, where each vault (5) is formed by the intersection of two semi-cylinders at 90 degrees, creating a structure of intersecting ribs, where each part (1) comprises ends (2) of the vault (5) that are in the shape of a semicircle, where the parts (1) have a constant thickness of 5 cm, and where one part (1) comprises a plurality of protrusions (3) at one end (2) and another part (1) comprises a plurality of housings (3') at another end (2) of another part (1), where the housings (3') of one part (1) correspond to the protrusions (3) of another part (1).