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  ASPHALT TECHNOLOGY Item 301 (Prime Coat) – shall consist of preparing and treating an aggregate base coursewith material in accordance with the Plans and Specification, preparatory to theconstruction of a bituminous surface course.Materials requirement:Bituminous material shall either be Rapid Curing (RC) Cutback Asphalt of Medium Curing (MC) Cutback Asphalt.Rapid Curing Cutback AsphaltRC-70RC-250RC-800RC-3000Viscosity at 60 o C40-70250-500800-16003000-6000Ductility, 5cm/min. at 25 o C100100100100Spot Testnegative for all gradesSolubility, Trichlroethylene %99999999Medium Curing Cutback AsphaltMC-30MC-70MC-250MC-800MC-3000Viscosity at 60 o C30-6070-140250-500800-16003000-6000Flashpoint, o C3838666666Spot Testnegative for all gradesSolubility, %9999999999Minimum Testing Requirement:For every 40MT or fraction thereof:1 – Quality Test Other requirement:1.Prime coat shall be applied only to surfaces, which are dry or slightly moist, and it shall not be applied when the weather is foggy or rainy.2.Heating temperature – 180 o C3.Rate of application – 1 to 2 ltr/m 2 Item 302 (Tack Coat) – shall consist of preparing and treating an existing bituminous or cement concrete surface with bituminous material in accordance with the Pans andSpecification, preparatory to the construction of a bituminous surface course.Materials requirement:Bituminous material shall either be Rapid Curing (RC) Cutback Asphalt or Emulsified Asphalt. 1  Rapid Curing Cutback AsphaltRC-70RC-250RC-800RC-3000Viscosity at 60 o C40-70250-500800-16003000-6000Ductility, 5cm/min. at 25 o C100100100100Spot Testnegative for all gradesSolubility, Trichlroethylene %99999999Emulsified AsphaltRS-1RS-2MS-1MS-2MS-2hSS-1SS-2Viscosity at 25 o C20 – 100 for all type of gradesPenetration, 25 o Solubility, %97.5 for all type of gradesMinimum Testing Requirement:For every 40MT or fraction thereof:1 – Quality Test Other requirement:1.Tack coat shall be sprayed only so far in advance on the surface course as willpermit it to dry to a “tacky” condition.2.Heating temperature – 180 o C3.Rate of application – 0.2 to 0.7 ltr/m 2 Item 303 (Seal Coat) – shall consist of application of bituminous material with or withoutapplication of aggregate on an existing bituminous surface course in accordance with thePlans and Specifications.Materials requirement:Bituminous materials shall either be Asphalt Cement (Penetration Grade 120-150),Rapid Curing (RC) or Medium Curing (MC) Cutback Asphalt.Rapid Curing Cutback AsphaltRC-70RC-250RC-800RC-3000Viscosity at 60 o C40-70250-500800-16003000-6000Ductility, 5cm/min. at 25 o C100100100100Spot Testnegative for all gradesSolubility, Trichlroethylene %99999999 2  Medium Curing Cutback AsphaltMC-30MC-70MC-250MC-800MC-3000Viscosity at 60 o C30-6070-140250-500800-16003000-6000Flashpoint, o C3838666666Spot Testnegative for all gradesSolubility, %9999999999 Asphalt Cement (Penetration Grade 120-150)Penetration at 25 o C, 100g. 5 sec.120-150Flashpoint425 minDuctility, 5cm/min, cm at 25 o C100 minSolubility, %99 minLoss in heating, %1.3 maxPenetration of residue, % of original46 minDuctility of residue at 25 o C, 5cm/min100 min Aggregate: Maximum size (Type 2): 9.5mm (3/8”) (Type 3):12.5mm (1/2”) Mass % of wear retained in No. 10 sieve:40 maxOther requirement:1.Seal coating operations shall not be started until the bituminous surface isthoroughly compacted by traffic and rolling, and in no event shall seal coat beplaced on newly constructed or reconditioned surfaces in less than ten (10)days after such surface is laid and opened to traffic.2.Heating temperature – 180 o C3.Rate of application – 0.9 to 1.8 ltr/m 2 Minimum Testing Requirement: Asphalt: For every 40MT or fraction thereof: 1 – Quality TestCover Aggregate: For every 75m 3 /200kg or fraction thereof: 1 – Grading Test 3  Item 307 (Bituminous Plant Mix Surface Course – General) – this item includes generalrequirements that are applicable to all types of bituminous plant mix surface courses andshall consist of constructing one or more bituminous bound layers on a preparedfoundation in accordance with the Specifications, and in conformity with the lines, gradesthickness and typical cross sections shown on the Plans.Materials requirement:Bituminous material shall either be Asphalt Cement, Rapid Curing (RC) or MediumCuring (MC) Cutback Asphalt and Emulsified Asphalt. Asphalt Cement:Penetration Grade40-5060-7085-100120-150200-300Penetration at 25 o C, 100g/sec.40-5060-7085-100120-150200-300Flashpoint450 min450 min450 min425 min350 minSolubility, %99 in all gradesLoss in heating, %0.8 max0.8 max1.0 max1.3 max1.5 maxPenetration of residue,% of srcinal58 min54 min50 min46 min40 minDuctility of residue at 25 o C, 5cm/min-50 min75 min100 min100 minRapid Curing Cutback AsphaltRC-70RC-250RC-800RC-3000Viscosity at 60 o C40-70250-500800-16003000-6000Ductility, 5cm/min. at 25 o C100100100100Spot Testnegative for all gradesSolubility, Trichlroethylene %99999999Medium Curing Cutback AsphaltMC-30MC-70MC-250MC-800MC-3000Viscosity at 60 o C30-6070-140250-500800-16003000-6000Flashpoint, o C3838666666Spot Testnegative for all gradesSolubility, %9999999999 4
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