AASHTO M 303 PDF download

Standard Specification for Lime for Asphalt Mixtures

AASHTO M 303 – Standard Specification for Lime for Asphalt Mixtures

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.