ASTM C977-18 PDF Download

The ASTM C977-18 standard outlines the requirements for quicklime and hydrated lime used in the stabilization of soils.

The standard covers quicklime and hydrated lime of different compositions, including high calcium, dolomitic, and magnesium lime. It specifies the required chemical composition for calcium, magnesium oxides, carbon dioxide, and free moisture in these lime products. The physical properties of hydrated lime, quicklime, and the residue of quicklime should also meet the specified limits.

The standard emphasizes the importance of conducting chemical analysis to ensure compliance with the specified composition requirements. The particle size of hydrated lime is determined through sieve analysis, following the referenced standard test method.

Additionally, the standard provides some contextual information regarding the use of quicklime and hydrated lime in soil stabilization. It notes that these lime-based materials can improve the load-bearing properties of clay soils, making them suitable for highway construction and other load-bearing applications. It explains that lime causes clay particles to agglomerate into larger particles, leading to improved load-bearing capabilities and subsequent hardening of the lime-treated soil through chemical reactions.

It is important to note that this standard does not cover requirements for by-product lime, commercial lime slurry, and similar materials, as the specifications for these materials may vary and are better determined locally.