The Structural Engineer > Archive > Volume 2 (1910) > Issues > Issue 2 > Notes on the Le Chatelier boiling test of portland cement
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Notes on the Le Chatelier boiling test of portland cement

The soundness of Portland cement, i.e., its freedom from expansion (“invariabilite de volume” or “Volumenbestandigkeit,” to give its French and German equivalents respectively), is its most essential property, and should be always the first thing to be determined in estimating the constructive value of a sample. It is obvious that, notwithstanding other highly desirable qualities which a cement may possess, such as great strength or large sand-carrying capacity, if it is unsound, and contains certain elements which subsequently cause expansion, with, i n extreme cases, disintegration and crumbling, it is not only of no use as a constructive material, but is at once converted into a destructive material. Although with the improved methods of manufacture obtaining of recent years these extreme cases of disintegration have become more and more rare, expansion of a more or less dangerous nature is not infrequently met with. D B Butler

Keywords: boiling test