CARBON DIOXIDE MINERALIZED CONCRETE CURING
CARBON DIOXIDE MINERALIZED CONCRETE CURING
We provide comprehensive technical services for our clients, including preliminary project design, project planning, factory construction plans, complete equipment supply, installation, and commissioning, therebyachleving turnkey projects.
The CO₂ mineralization curing technology for concrete involves a high-pressure CO₂ gas interacting with the cementitious components and other alkaline calcium and magnesium compounds within the pre-cured or early-hydrated concrete. This mineralization reaction forms carbonate products within the concrete's internal pores and interface structures. The process improves the strength and durability of the concrete through filling effects, interface transition zone elimination effects, and product layer effects.
Principle of CO₂ Mineralization Curing for Concrete
Principle of CO₂ Mineralization Curing for Concrete
We have designed and developed standardized equipment for an integrated CCUS-CO₂ mineralization curing system. This system captures CO₂ from industrial emissions and uses it in the concrete curing process. The entire system achieves a closed-loop utilization of CO₂, with a current conversion rate of about 98%, virtually eliminating secondary emissions. Additionally, it enables efficient CO₂ sequestration.
Features of CO₂ Mineralization Curing Concrete Technology
Features of CO₂ Mineralization Curing Concrete Technology
Our technology can replace traditional autoclave curing processes, significantly reducing curing energy consumption and carbon emissions. The process uses an autoclave reactor for the gas-solid reaction between CO₂ and concrete. This reaction occurs under constant pressure between 1 bar and 15 bar at room temperature, completing the curing process in 2 hours. This method significantly cuts down curing costs while offering clear low-carbon benefits.
In terms of raw materials, the product's solid waste content is over 90%, forming a new concrete formula based on various industrial solid wastes such as steel slag, carbide slag, and fly ash. The substitution rate for traditional Portland cement exceeds 15%, effectively achieving carbon sequestration while consuming large amounts of industrial waste.
Core Advantages of CO₂ Mineralized Curing Concrete
Core Advantages of CO₂ Mineralized Curing Concrete
●Significant Carbon Emission Reduction:
The technology for curing lightweight concrete precast elements with CO₂ can achieve an 80% reduction in carbon emissions over the entire lifecycle compared to existing products.
●Cost-Effective Raw Materials:
90% of the solid raw materials are sourced from local industrial waste, reducing the cost of raw materials.
●High CO₂ Absorption and Sequestration:
The average CO₂ absorption rate exceeds 98%, with a net sequestration rate of over 80%.
●Compliance with National Standards:
The low-carbon concrete precast elements meet national standards for appearance, dimensions, flexural strength, compressive strength, freeze resistance, radioactivity, and water absorption.