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ASTM C618 - 19
Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
| Fecha edición: |
2019-01-01
Anulada
|
|---|---|
| Fecha cancelación: | 2019-01-01 |
| Idiomas disponibles: | Inglés |
| Resumen: | This specification covers coal fly ash and raw or calcined natural pozzolan for use in concrete where cementitious or pozzolanic action, or both, is desired, or where other properties normally attributed to fly ash or pozzolans may be desired, or where both objectives are to be achieved. Fly ash and natural pozzolans shall conform to the prescribed chemical composition requirements and physical requirements. The materials shall be tested for fineness, strength activity index, water requirement, soundness, and autoclave expansion or contraction. |
| Keywords: | fly ash; natural pozzolan; pozzolans; |
| Scope: | 1.1 This specification covers coal fly ash and raw or calcined natural pozzolan for use in concrete where cementitious or pozzolanic action, or both, is desired, or where other properties normally attributed to fly ash or pozzolans may be desired, or where both objectives are to be achieved. Note 1: Finely divided materials may tend to reduce the entrained air content of concrete. Hence, if a fly ash or natural pozzolan is added to any concrete for which entrainment of air is specified, provision should be made to ensure that the specified air content is maintained by air content tests and by use of additional air-entraining admixture or use of an air-entraining admixture in combination with air-entraining hydraulic cement. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 The text of this standard references notes and footnotes, which provide explanatory information. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
| ICS: | 91.100.30 - Hormigón y productos de hormigón |
| CTN: | C09.24 - C09.24 |
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Otras Relaciones |
Es referenciada por C1790-21 Es referenciada por C0985M-22 Es referenciada por C1932-23 Es referenciada por C0476-23 Es referenciada por C0985-22 Es referenciada por C0361M-22 Es referenciada por C0361-22 Es referenciada por C0076M-22A Es referenciada por C0506M-22A Es referenciada por C1709-22 Es referenciada por C1904-22 Es referenciada por A1105-17R22 Es referenciada por C0478_C0478M-22 Es referenciada por C0507-22 Es referenciada por C0506-22A Es referenciada por C0507M-22 Es referenciada por C1804 - 20(2025) Es referenciada por C109/C109M - 24 Es referenciada por C1012/C1012M - 24a Es referenciada por C1634 - 25 |










