Geopolymer Building Material Composition for Low-Carbon Fire Resistance
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Solution Overview
Problem
Traditional building materials, particularly those based on Portland cement, emit high carbon dioxide and contribute to climate change, and there is a need for rapid construction of affordable, durable, and fire-resistant dwellings that minimize maintenance and property damage from natural disasters.
Innovation Solution
A geopolymer formulation using sand, ground granulated blast furnace slag, fly ash, sodium tetraborate, boric acid, zeolite, sodium caseinate, and optionally sodium metasilicate or sodium hydroxide, along with additives like basalt fiber and magnesium oxide, to create building materials with enhanced compressive, tensile, and flexural strengths, and hydrophobic, non-combustible, and mold-resistant properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If Portland cement-based products are used for construction, then structural strength and durability are achieved, but high carbon dioxide emissions occur contributing to climate change
Solution Approach 1:
The patent changes the chemical composition parameters by replacing Portland cement with geopolymer binders made from industrial by-products (fly ash, GGBFS) activated by alkaline solutions, thereby achieving comparable structural strength while eliminating CO2 emissions from cement production
Solution Approach 2:
The patent uses composite materials by combining industrial by-products (fly ash, GGBFS) with alkaline activators and various additives (superplasticizers, air-entraining agents) to create geopolymer concrete that matches or exceeds the performance of traditional Portland cement concrete
2Productivity
If traditional wooden structures are used for construction, then rapid construction and affordability are achieved, but fire resistance and durability are compromised
Solution Approach 1:
The patent creates composite wood-geopolymer structures where geopolymer mortar or concrete is applied as protective layers or used in hybrid construction systems, providing fire resistance and durability while maintaining the rapid construction advantages of wood framing
Solution Approach 2:
The patent applies fire-resistant geopolymer coatings or protective layers to wooden structures in advance, creating a protective barrier that prevents fire damage before exposure occurs, thereby enabling rapid construction of fire-resistant structures
3Ease of manufacture
If traditional building materials are used without water repellent treatment, then construction simplicity is maintained, but property damage from water intrusion and mold increases
Solution Approach 1:
The patent modifies the material composition by incorporating hydrophobic additives and superplasticizers into the geopolymer formulation, changing the material's surface properties to be water-repellent while maintaining construction simplicity and mixability
Solution Approach 2:
The geopolymer material inherently provides water resistance and mold resistance through its chemical composition and hydrophobic properties, eliminating the need for separate water repellent treatments or protective coatings that would complicate 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 formulation results in building materials with high compressive strength (2000-12000 psi), flexural strength (700-1000 psi), tensile strength (600-900 psi), and impact resistance (3500 psi), while being non-combustible and mold-resistant, reducing carbon footprint and enabling rapid construction of durable dwellings.
Implementation Method 1
A geopolymer formulation using sand, ground granulated blast furnace slag, fly ash, sodium tetraborate, boric acid, zeolite, sodium caseinate, and optionally sodium metasilicate or sodium hydroxide
Data Source
AI summary
In one embodiment, a method of manufacturing a dry geopolymer formulation. The method comprises obtaining the various constituents of the geopolymer formulation from one or more of a sand, a ground granulated blast furnace slag (GGBFS), a fly ash, sodium tetraborate, a boric acid, a zeolite, a sodium caseinate, SC-9, sodium metasilicate and sodium hydroxide; and mixing the constituents to a homogenous mixture. In another embodiment, the present disclosure describes a method of manufacturing a building material comprising obtaining the dry geopolymer formulation, mixing the hydrated formulation, dispensing the formulation; and curing the formulation.