A borable and nailable concrete is obtained by first mixing 1 part of lime and 16-18 parts sand to form a lime mortar, and this is ground before it has completely set and then mixed with one part of cement.
Source: wiktionary
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A borable and nailable concrete is obtained by first mixing 1 part of lime and 16-18 parts sand to form a lime mortar, and this is ground before it has completely set and then mixed with one part of cement.
Source: wiktionary