ICC-ES AC520
Full Name
ICC-ES AC520 – Acceptance Criteria for CO2 Concrete-Based Concrete Masonry Units
Scope
ICC-ES AC520 outlines the acceptance criteria for concrete masonry units (CMUs) made with CO2 concrete. CO2 concrete is a type of concrete that utilizes carbon dioxide (CO2) during the curing process, which can improve its strength and durability while reducing its carbon footprint.
The criteria cover various aspects of CO2 concrete-based CMU performance, including:
- Compressive strength: evaluates the CMU’s ability to withstand compressive loads.
- Absorption and moisture content: assesses the CMU’s ability to resist moisture absorption, which can affect its durability and performance.
- Dimensional stability: evaluates the CMU’s ability to maintain its shape and dimensions over time.
- Durability: assesses the CMU’s resistance to freeze-thaw cycles, scaling, and other environmental factors.
- Sustainability: evaluates the environmental impact of the CO2 concrete production process, including CO2 utilization and potential for carbon sequestration.
The purpose of AC520 is to provide a standardized framework for evaluating CO2 concrete-based CMUs, ensuring they meet the minimum requirements for safety, structural integrity, and durability in building construction, while also promoting sustainable building practices.
ICC-ES AC520 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the ICC-ES AC520 acceptance criteria (excluding sections 3.3 and 3.4).
Contact us for more information.
Resources
Keywords
CO2 concrete; concrete masonry unit; compressive strength; absorption; moisture content; dimensional stability; durability; sustainability; carbon sequestration; freeze-thaw resistance; scaling resistance