This specification covers two types of lime to be used for reducing water susceptibility in asphalt mixtures.
Type I – High calcium-hydrated lime containing maximum magnesium content, calculated as magnesium oxide, of 4 percent by mass. Compliance with chemical composition requirements shall be determined by use of T 219 (Note 1).
Type II – Magnesium or dolomitic lime containing magnesium, calculated as magnesium oxide, greater than 4 but no more than 36 percent by mass. Compliance with chemical composition requirements shall be determined by use of ASTM C 25 (Note 2).
Note 1: Magnesium oxide content may be determined by ASTM C 25. Note 2: Except that Section 2, “Samples for Analysis,” is excluded.
