ASTM International has published ASTM C595-12, Standard Specification for Blended Hydraulic Cements.
The recent revision defines requirements for a new cement type: Type
IL, portland-limestone blended cement, which includes more than 5% and
up to 15% limestone as an ingredient.
This
technology has the potential to reduce environmental impact of cement
production by about 10% while maintaining performance characteristics
concrete producers are familiar with. Similar cements have been used in
Europe and other places around the world for several decades and have
demonstrated the performance and durability expected in concrete
products.
For the most recent editions of the specifications, please visit the following websites:
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