ANALYSIS OF USING RECLAIMED ASPHALT PAVEMENT …
EBY Paving & Construction Paving Projects 101 A turnaround is an area designed for extra parking or for backing up before driving forward out of a driveway. It’s a useful feature if you want to avoid backing down the driveway or onto a busy street. PENNDOT ASPHALT TECHNICIAN CERTIFICATION PROGRAM Design, HMA Base Course • 309.1 Description - This work is the standard construction of plant mixed Hot-Mix Asphalt (HMA) base course on a prepared surface using a volumetric mixture design developed with the Superpave Gyratory Compactor. • 309.2 Materials – follows 409.2. 40 Section 309: Superpave Asphalt Mix Design, HMA Base Course • 5 Preparation of Surface - IN.gov HMA pavements may be placed: 1) Over existing pavements, either HMA or concrete 2) On newly constructed aggregate or HMA base courses 3) For widening contracts, on a combination of existing pavement and a base course The existing surface is required to be compacted, stable, and free from P401 Hot Mix asphalt (HMA) Structural Lift Thickness vs
Allowed in HMA mixes. Not allowed in SMA, OGFC, Ultra -Thin, BDWSC. 15% allowed in surface course HMA 25% allowed in base & intermediate course HMA Pilot projects allowing 25% in surface course HMA. RAP allowed up to 50% in Dense Graded Aggregate (DGA)
HOT MIX ASPHALT PAVEMENT DESIGN GUIDE 4 Chart 1: Recommended Mixes for Normal HMA Applications (Proposed compaction levels based on NCHRP 9-9 levels @ 4% Per Voids) Low Volume Design Level Recommended Aggregate Size Binder Type Compaction Level Compacted Thickness Surface 9.5mm PG64-22 50 gyrations 1.5” Base 12.5mm PG64-22 50 gyrations 2” 19mm PG64-22 50 gyrations 3” Chapter 620 Design of Pavement Structure Crushed Surfacing Top Course 2,850 1.43 3,700 1.85 Crushed Surfacing Base Course 2,950 1.48 3,700 1.85 Screened Gravel Surfacing 3,700 1.85 *Gravel Base 3,400 – 3,800 1.70 – 1.90 Permeable Ballast 2,800 1.40 *3,700 lb/cy (1.85 tons/cy) is recommended as the most suitable factor; however, if the
5 Preparation of Surface - IN.gov
EBY Paving & Construction Paving Projects 101 A turnaround is an area designed for extra parking or for backing up before driving forward out of a driveway. It’s a useful feature if you want to avoid backing down the driveway or onto a busy street. PENNDOT ASPHALT TECHNICIAN CERTIFICATION PROGRAM Design, HMA Base Course • 309.1 Description - This work is the standard construction of plant mixed Hot-Mix Asphalt (HMA) base course on a prepared surface using a volumetric mixture design developed with the Superpave Gyratory Compactor. • 309.2 Materials – follows 409.2. 40 Section 309: Superpave Asphalt Mix Design, HMA Base Course • 5 Preparation of Surface - IN.gov HMA pavements may be placed: 1) Over existing pavements, either HMA or concrete 2) On newly constructed aggregate or HMA base courses 3) For widening contracts, on a combination of existing pavement and a base course The existing surface is required to be compacted, stable, and free from P401 Hot Mix asphalt (HMA) Structural Lift Thickness vs