C618 ? 12a TABLE 1 Chemical Requirements Class N Silicon dioxide (SiO2) plus aluminum oxide (Al2O3) plus iron oxide (Fe2O3), min, % Sulfur trioxide (SO3), max, % Moisture content, max, % Loss on ignition, max, % A F 70.0 5.0 3.0 6.0A C 50.0 5.0 3.0 6.0 70.0 4.0 3.0 10.0...
This study proves that inert natural minerals passed ASTM C618 for a Class N natural pozzolan for use in concrete, suggesting that the standard is inadequate. 展开 关键词:ASTM C618 Class N natural pozzolan pozzolanic reaction DOI: 10.14359/51712243 ...
Speci?cation C618 provides a criterion for its use as applied to ?y ash and raw or calcined natural pozzolans when sampled and tested in accordance with Test Methods C311 by comparison with a control mortar made with low-alkali cement. Speci?cation C1240 provides criteria for the use of ...
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