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2350/2360 <br />The Minnesota Department of Transportation (MnDOT) adopted Super -Pave mix designs (MnDOT <br />Specification 2360) in 1998. Some cities continue to use older mix methods such as MnDOT <br />Specification 2331, 2340, and 2350. The table below gives a brief comparison between old <br />specification 2340 and the newer Super Pave 2360 mixes: <br />2340 Mixes <br />2360 Super Pave <br />Crushing <br />Type 31 No crushing requirement <br />Level 2 30% + 4 <br />Volumetric <br />Air Voids <br />Air Voids <br />4% <br />VMA* <br />AFT ** <br />No TSR*** <br />TSR Required <br />Compaction <br />Ordinary Compaction <br />Max Density <br />Modified specified <br />Higher Requirements <br />* Void in mineral aggregate <br />**Asphalt Film Thickness <br />* * * Tensile Strength Ration (TSR) - Stripping Test <br />Crushing: <br />Requiring minimum amount of crushed aggregates increases the structural stability of the HMA. This <br />allows resistance to the traffic loadings without rutting occurring. During the 1980's rutting in HMA <br />pavements was common due to the lack of crushed aggregates. <br />Air Voids <br />D-2 <br />