Mineral-Based Insulating Layer for Precast Concrete
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Solution Overview
Problem
Conventional thermal insulation systems for precast concrete parts, particularly those using plastic-based materials, create vapor barriers that lead to mold formation and are difficult to dispose of, while also failing to meet thermal insulation requirements effectively, resulting in increased energy costs and environmental concerns.
Innovation Solution
A precast concrete part with a mineral-based, cement-based insulating layer that is applied directly to the concrete layer, eliminating the need for additional adhesives and allowing for excellent thermal insulation with minimal thickness, while being environmentally friendly and easy to dispose of.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If plastic-based insulation materials (EPS, XPS, PUR) are used in external thermal insulation composite systems, then excellent thermal insulation properties are achieved, but vapor barrier effects lead to mold and algae growth
Solution Approach 1:
The patent uses porous silicate granules as the insulating material, which provides both thermal insulation and vapor permeability. The porous structure allows water vapor to pass through while maintaining insulating properties, eliminating the vapor barrier effect that causes mold growth in plastic-based systems.
Solution Approach 2:
The invention changes the material parameter from plastic-based (EPS, XPS, PUR) to mineral-based porous silicate materials. This parameter change fundamentally alters the vapor permeability characteristic while maintaining or improving thermal insulation performance, thereby resolving the contradiction between insulation effectiveness and mold prevention.
2Loss of energy
If plastic-based insulation boards are used to achieve sufficient thermal insulation, then thermal insulation requirements are met, but the system thickness increases to 10-20 cm
Solution Approach 1:
The porous silicate granules have high insulating efficiency per unit thickness due to their mineral structure and pore configuration. This allows achieving the required thermal insulation with a thinner layer compared to conventional plastic insulation boards, reducing the overall system thickness while meeting energy standards.
Solution Approach 2:
The insulation layer is formed as a composite material consisting of porous silicate granules bound with cementitious binders. This composite structure optimizes both thermal insulation performance and mechanical strength, enabling thinner application while maintaining structural integrity and insulating effectiveness.
3Loss of energy
If plastic-based insulation materials are used in insulated precast concrete elements, then thermal insulation is improved, but disposal becomes difficult and expensive as mixed or hazardous waste
Solution Approach 1:
The mineral-based porous silicate material is inherently recyclable and can be processed as ordinary construction waste rather than hazardous waste. The material's composition allows for easier disposal and potential reuse in new construction applications, eliminating the costly disposal requirements associated with plastic-based insulation materials.
Solution Approach 2:
The invention changes the material composition parameter from synthetic plastics to natural mineral materials. This fundamental parameter change transforms the waste classification from hazardous/mixed waste to ordinary construction waste, significantly improving ease of disposal and reducing environmental impact.
4Loss of energy
If conventional ETICS with plastic insulation boards are used, then thermal insulation performance is excellent under ideal conditions, but moisture increases thermal conductivity and theoretical U-values are not achieved in practice
Solution Approach 1:
The porous silicate granules inherently resist moisture absorption due to their mineral structure and surface properties. This moisture resistance ensures that the thermal conductivity remains stable and close to theoretical values even in humid conditions, eliminating the performance degradation seen in plastic-based systems where moisture accumulation increases thermal conductivity.
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 mineral-based insulation system provides intimate bonding with concrete, reduces thermal conductivity, prevents mold formation by allowing vapor diffusion, and enables cost-effective, resource-efficient production of thermally insulated precast concrete elements that meet stringent energy standards.
Implementation Method 1
The insulating layer (4) is arranged on the concrete layer (2)... reduces thermal conductivity... excellent thermal insulation with minimal thickness
Implementation Method 2
prevents mold formation by allowing vapor diffusion
Data Source
Figure 1~2
Figure 3
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AI summary
The present invention relates to a method for producing a thermally insulated precast concrete element, comprising at least one concrete layer and an insulating layer, wherein the insulating layer is arranged on the concrete layer.