ASTM C1866/C1866M is the ASTM standard for Ground-Glass Pozzolan for Use in Concrete, defining a technical basis for evaluating a ground-glass supplementary material intended for concrete applications. It matters because specifications like this help buyers, producers, and specifiers align on material quality and expected performance. For procurement and compliance, ASTM C1866/C1866M provides a consistent reference point when comparing product offerings and supporting quality control decisions.

What is ASTM C1866/C1866M?

This ASTM specification focuses on ground-glass pozzolan used in concrete, which places the document in the category of material requirements for a mineral addition intended to contribute pozzolanic behavior. In practical terms, it is used to define the standard by which the material can be identified, evaluated, and referenced in technical documents. ASTM C1866/C1866M is especially relevant when a project needs a clear specification for a ground-glass based material rather than a general description of recycled content or concrete ingredients.

Where is ASTM C1866/C1866M used?

This standard is commonly used in concrete material specifications, procurement documents, and supplier qualification workflows where ground-glass pozzolan is considered for use in concrete. It may be referenced by producers, testing laboratories, engineers, and quality teams that need a shared standard for material acceptance and product comparison. ASTM C1866/C1866M is most relevant wherever concrete mixtures are being developed or reviewed with a ground-glass pozzolan component in mind.

Why is ASTM C1866/C1866M important?

ASTM C1866/C1866M helps support consistency in how ground-glass pozzolan for concrete is identified and evaluated. That can reduce ambiguity in purchasing, testing, and specification writing, while also helping project teams manage quality control more effectively. By relying on a recognized ASTM standard, stakeholders have a clearer basis for compliance checks, product evaluation, and risk reduction when a ground-glass pozzolan is part of the concrete supply chain.

• Ground-glass pozzolan specification
• Concrete material reference
• Quality control support
• Procurement and compliance use
• Product evaluation basis