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<br />. <br /> <br />. <br /> <br />. <br /> <br />Colorado Project No. NH 0504-042 <br />SH 50 at Rocky Ford <br />Construction Subaccount No. 13561 <br /> <br />REVISION OF SECTION 403 <br />HOT BITUMINOUS PAVEMENT <br /> <br />Section 403 ofthe Standard Specifications is hereby revised for this project as follows: <br /> <br />Subsection 403.02 shall include the following: <br /> <br />The design mix for hot bituminous pavement shall conform to the following: <br /> <br />TABLE 403-1 <br /> <br />7/'lJ01 <br /> <br /> Test Value For Grading <br /> Property Method S(100) <br /> Patching <br />Air Voids, percent at: <br /> N (initial)(For info only) CPL5115 <br /> N (design) 3.5 - 4.5 3.5 - 4.5 <br />Lab Compaction (Revolutions): <br /> N (initial) CPL5115 8 8 <br /> N (design) 100 100 <br />Stability, minimum CPL 5106 30 30 <br />Aggregate Retained on the 4.75 <br />rom (No.4) Sieve with at least 2 CP45 60 60 <br />MechanicaIly Induced fractured <br />faces, % minimum <br />Accelerated Moisture Sus. CPL 5109 . <br />ceptibility Tensile Strength Ratio Method B 80 80 <br />(Lottman), minimum <br />Minimum Dry Split Tensile CPL 5109 205 (30) 205 (30) <br />Strength, kPa (psi) Method B <br />Grade of Asphalt Cement, Top PG 64-22 PG 64.22 <br />Layer <br />Grade of Asphalt Cement, Layers PG 64-22 PG 64.22 <br />below Top <br />Voids in the Mineral Aggregate CP48 See Table See Table <br />(VMA) % minimum 403.2 403.2 <br />Voids Filled with Asphalt (VFA), AI MS-2 65.75 65.75 <br />% <br /> <br />Note: AI MS-2 = Asphalt Institute Manual Series 2 <br />Note: The current version of CPL 5115 is available from the Region Materials Engineer. <br />Note: Mixes with-gradations having less than 40% passing'the 4.75 nun (No.4) sieve shall be approached <br />with caution because of conslructability problems. <br /> <br />9 <br />