ASTM C618-19 PDF Download
Standard EN
Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
Also Known As:
The ASTM C618-19 standard specifies the requirements for the use of coal fly ash and natural pozzolans in concrete. These materials are used to provide cementitious or pozzolanic action, or to achieve certain properties in concrete.
The standard defines the chemical composition and physical requirements that fly ash and natural pozzolans must meet in order to be used in concrete. The materials are tested for fineness, strength activity index, water requirement, soundness, and autoclave expansion or contraction.
The standard also provides a note stating that finely divided materials, such as fly ash or natural pozzolans, may reduce the entrained air content of concrete. Therefore, if the concrete specification requires a certain air content, additional measures need to be taken to ensure that the specified air content is maintained, such as using air-entraining admixtures.
It is important to note that the standard includes explanatory information in the form of notes and footnotes, but these should not be considered as requirements of the standard, except for those in tables and figures.
| Descriptors | Coal,Concrete,Fly Ash,Natural Pozzolans |
| ICS Codes | 91.100.30 - Concrete and concrete products |
| Language(s) | English |
| File Size | 112.6 KB |
