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Deleterious Substances in Aggregate

Deleterious Substances in Aggregate

Deleterious substances in aggregates can be detrimental to the quality and durability of concrete. These substances include organic impurities like loam, which interfere with cement hydration and are usually present in the sand. These prevent a good bond between aggregate and cement paste. Organic impurities can be detected using the colorimetric test, where the darkness of a solution after agitation indicates the level of organic content.
Another type of impurity is clay and fine material that...

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Related Experiment Video

Updated: Jun 14, 2026

A Silicosis Mouse Model Established by Repeated Inhalation of Crystalline Silica Dust

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SILICA DUST

¹Department of Medical Research, Banting Institute, University of Toronto, Toronto.

Canadian Medical Association Journal

|March 24, 2010

Summary

No abstract available in PubMed .

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