ASTM C911-19 PDF Download

The ASTM C911-19 standard provides specifications for lime and limestone products that are suitable for various chemical and industrial applications. These applications include waste acid neutralization, agricultural liming, soil stabilization, asphalt, flue gas desulfurization, drinking water softening, waste and wastewater neutralization, and wastewater treatment plant residuals stabilization.

The standard outlines the required chemical composition for quicklime, hydrated lime, and limestone for each specific end use. The composition is determined based on a weight sample taken at the place of manufacture. Quicklime must be free of unslakable residues and should be capable of disintegrating in water to form suspensions of finely divided material.

The standard also includes a table that lists the specific uses and applications for which the lime and limestone products are suitable. These include cooking rags, sulfite pulp, silica brick, calcium carbide, grease, calcium silicate products, and hypochlorite (bleach). However, it is important to note that certain uses, such as neutralization of waste acid, agricultural liming materials, soil stabilization, asphalt, flue gas desulfurization, drinking water softening, waste and wastewater neutralization, and wastewater treatment plant residuals, are addressed in other ASTM standards.

In addition, the standard provides type designations for the different types of limestone, quicklime, and hydrated lime. These designations include high-calcium, dolomitic, and magnesian variations for each type. The buyer is required to designate the specific use and may specify one or more of the type designations listed in the standard.