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 AASHTO T 219. Note—Magnesium oxide content may be determined by ASTM C25. Type II —Magnesium or dolomitic lime containing magnesium, calculated as magnesium oxide, greater than 4 percent but no more than 36 percent by mass. Compliance with chemical composition requirements shall be determined by use of ASTM C25. Note—Except that Section 2, “Samples for Analysis,” is excluded.