Enzymatic Construction Material Self-Healing Carbon Sequestration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The concrete industry is a significant contributor to global CO2 emissions, and existing methods to reduce concrete consumption or emissions, such as using high volume pozzolans, are not environmentally friendly, necessitating the development of novel, environmentally friendly construction materials with self-healing capabilities.
Innovation Solution
The development of an enzymatic construction material (ECM) that utilizes carbonic anhydrase to catalyze the condensation of carbon dioxide and water, promoting the precipitation of calcium ions to form calcium carbonate crystals, creating a self-healing, carbon-negative building material with superior mechanical strength and rapid curing properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional concrete is used, then compressive strength and resistance to atmospheric elements are achieved, but CO2 emissions increase
Solution Approach 1:
The patent converts CO2 emissions into a beneficial resource by using carbonic anhydrase enzyme to catalyze the reaction between CO2 and water, forming calcium carbonate crystals that strengthen the construction material. This transforms the harmful CO2 emission into a useful binding agent that provides both structural strength and carbon sequestration.
Solution Approach 2:
The patent changes the chemical parameters of the construction material by introducing enzyme catalysis to accelerate the formation of calcium carbonate crystals. This enzymatic process modifies the reaction kinetics and product formation, creating a material that achieves strength faster and with lower CO2 emissions compared to traditional concrete.
2Object-generated harmful factors
If high volume pozzolans replacements are used to reduce concrete consumption, then CO2 emissions are reduced, but environmental friendliness deteriorates
Solution Approach 1:
The patent employs a self-service approach where the construction material itself contains the necessary components (calcium source, water, CO2) and the enzymatic catalyst to automatically form strengthening crystals. This self-healing mechanism eliminates the need for external pozzolans or additional chemical additives, maintaining environmental friendliness while reducing CO2 emissions.
3Strength
If traditional concrete curing is used, then compressive strength is achieved, but curing time is long (28 days)
Solution Approach 1:
The patent replaces the slow chemical hydration process of traditional concrete with an enzymatic catalysis system. The carbonic anhydrase enzyme accelerates the formation of calcium carbonate crystals, substituting the mechanical/chemical curing process with a biocatalytic one that achieves comparable or superior strength much faster, reducing curing time from 28 days to several hours or days.
4Strength
If enzyme-driven bridging of sand particles is used, then mechanical strength is improved, but material complexity increases
Solution Approach 1:
The patent creates a composite construction material combining sand particles, calcium source, water, and carbonic anhydrase enzyme. This composite system leverages the natural properties of each component while the enzyme facilitates their interaction, achieving enhanced mechanical strength through a relatively simple composite structure rather than complex processing or multiple material layers.
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 ECM achieves compressive strengths twice that of cement mortars, reduces CO2 emissions, and exhibits rapid curing, making it a viable alternative to traditional concrete while being environmentally friendly and harmless to humans.
Implementation Method 1
The disclosed approach employs carbonic anhydrase (CA) to catalyze the condensation of carbon dioxide and water to promote the precipitation of calcium ions in the aqueous solution as calcium carbonate crystals
Implementation Method 2
carbonic anhydrase (CA) to catalyze the condensation of carbon dioxide and water
Implementation Method 3
precipitation of calcium ions in the aqueous solution as calcium carbonate crystals
Data Source
AI summary
Materials and methods for a rapid and effective way to create a carbon negative self-healing construction material are described. The construction material uses sand aggregates, a trace amount of catalyst, a small dosage of scaffolding material with a crosslinking agent, and a calcium source. The curing is performed at a high temperature for a short period or at room temperature for a long period. The catalyst-driven method to bridge the sand particles results in a dense, stiff, strong, and tough structural material, which upon exposure to calcium source and CO2 heals itself repeatably.