Organic Impurities Test Set - Gilson Co.
Deleterious organic materials in fine aggregates can be easily detected with the Organic Impurities Test, a simple, widely-used test. Samples are mixed in a special graduated colorless glass bottle with a 3% sodium hydroxide solution, then allowed to stand for 24 hours.Standard Test Method for Organic Impurities in Fine,,Standard Test Method for Organic Impurities in Fine Aggregates for Concrete Reference Number ASTM C40 Material. Aggregate. Test Property. Injurious organic impurities. Description of Test. The fine aggregate is placed into a glass bottle with a 3% sodium hydroxide solution. The mixture is shaken vigorously and allowed to stand for 24-hours.How’s That Sand? Checking for impurities in sand,,Fine aggregates of sand used for construction must be free of impurities such as clay, silt, salts, mica, shale, iron pyrites, shell, coal residues, and organic matter.