Geopolymer Tile-Foam Block for Wall Insulation
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Solution Overview
Problem
Existing external wall insulation methods are costly and time-consuming, requiring two separate layers for insulation and weather protection, which can lead to detachment issues and inefficiencies in thermal management.
Innovation Solution
An integral dual module geopolymer building block is developed, comprising an inner foam module for insulation and an outer dense tile surface for weather protection, made from a geopolymer paste including sodium silicate, sodium hydroxide, and calcined kaolin clay, with hydrogen peroxide added to create a foam layer, cured at specific temperatures to form a lightweight, fire-resistant, and thermally efficient unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If two separate layers (insulation layer and weather protection layer) are used for external wall insulation, then thermal insulation performance is improved, but construction cost and time increase
Solution Approach 1:
The patent combines the insulation layer and weather protection layer into a single integral building block. The building block has an outer dense shell providing weather protection and an inner foam core providing thermal insulation, eliminating the need for separate attachment of two layers and thereby improving construction efficiency while maintaining thermal insulation performance.
Solution Approach 2:
The integral building block performs multiple functions simultaneously: the outer dense shell provides weather protection (waterproofing, wind resistance), while the inner foam core provides thermal insulation. This multi-functional design eliminates the need for separate specialized layers, reducing construction complexity and time.
2Reliability
If two separate layers are used for insulation and weather protection, then functional performance is improved, but system complexity and attachment requirements increase
Solution Approach 1:
The patent merges the insulation layer and weather protection layer into a single integral structure where the outer dense shell and inner foam core are permanently bonded. This eliminates the complexity of attachment systems, adhesives, and potential detachment issues associated with separate layers, while maintaining the functional benefits of both layers.
3Object-affected harmful factors
If traditional two layer system is used, then insulation and protection functions are achieved, but material cost and installation time increase
Solution Approach 1:
The building block is manufactured as a complete integral unit with the outer dense shell and inner foam core already permanently bonded together. This preliminary integration during manufacturing eliminates the need for on-site attachment operations, significantly reducing installation time while ensuring proper alignment and bonding that may be difficult to achieve during construction.
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 geopolymer tile-foam block provides effective thermal and sound insulation, weather protection, and cost savings by integrating both functions into a single, durable, and dimensionally stable unit, achieving up to 20% energy savings and improved fire rating compared to traditional systems.
Implementation Method 1
A second foam layer of a geopolymer paste is made from a second mass of geopolymer paste with hydrogen peroxide (H2O2) added. The H2O2 (35% concentration) is mixed with the geopolymer paste and varies from about 0.5% to about 2.0% by wgt. of geopolymer paste to form a geopolymer foam
Implementation Method 2
The module is then cured at about 40° C. for one hour and at about 80° C. for about 23 hours
Data Source
AI summary
An integral dual module geopolymer building block includes an inner foam module for insulation and an outer dense tile surface on an outer side of the inner foam module for weather protection. The outer porous module comprises a geopolymer paste including sodium silicate and sodium hydroxide flakes dissolved in the sodium silicate to form an activated solution and adding calcined kaolin clay to the activated solution to form a geopolymer paste. A first relatively dense tile layer has a thickness of about 0.5 cm to 1.5 cm. A second geopolymer layer made from a second mass of paste mixed with hydrogen peroxide forms a geopolymer foam having a thickness of between 5 cm and 15 cm.