Rap Vs Virgin Aggregate Properties Pdf

rap vs virgin aggregate properties pdf

MILLING AND RECYCLING Roadtec

Binder Properties • Binder in the RAP is aged and much harder than Virgin Binder • Need to account for this at higher RAP % – Use a softer asphalt with higher Rap % – This will prevent brittle mixes and ensure good performance . HMA – America’s Most Recycled Product SMOOTH DURABLE SAFE QUIET Binder Replacement Calculation Binder Replacement, % = (A X B) ?100% C Where: A



rap vs virgin aggregate properties pdf

EXPERIMENTAL INVESTIGATIONS ON THE PERFORMANCE OF

that the addition of RAP to virgin aggregate decreases the maximum dry density and alters the amount of water needed to reach optimum compaction. Results from this study indicate that the addition of RAP to an aggregate will cause the compaction curve to drop and shift to the left. In other words, the maximum dry density is inversely proportional to the percentage of asphalt millings contained

rap vs virgin aggregate properties pdf

Research on High-RAP Asphalt Mixtures with Rejuvenators

for the Engineer’s approval the use of virgin aggregates in lieu of recycled aggregates in the sub-base material when there is a shortage of supply of recycled aggregates. 2006 Edition 9.4 Table 9.1: Properties of sub-base material Properties BS test sieve Percentage by mass passing Particle size distribution 75 mm 37.5 mm 20 mm 10 mm 5 mm 600 µm 75 µm 100 85 - 100 60 - 85 40 - 70 25 - 45



rap vs virgin aggregate properties pdf

Andre Molenaar Design of Recycled Asphalt Mixtures

of 0.5 percent of the aggregate in the reclaimed asphalt pavement (RAP) portion. c. Add more lime and an approved heat-stable, anti-stripping additive that meets the requirements of Subsection 831.2.04, “Heat Stable Anti-Stripping Additive,” if necessary, to meet requirements for mixture properties.

Rap vs virgin aggregate properties pdf
Andre Molenaar Design of Recycled Asphalt Mixtures
rap vs virgin aggregate properties pdf

COMPATIBILITY OF RAP AND VIRGIN BINDER 2012 Arizona

Consensus aggregate properties, specific gravity tests, and gradation analysis were per- formed on three replicates each of the virgin and recovered aggregates. Only the sand equivalent test and aggregate-specific gravities showed regular significant

rap vs virgin aggregate properties pdf

Cement Treated RAP Mixes for Roadway Bases

such as reclaimed asphalt pavement (RAP) and recycled concrete aggregate (RCA), in road foundations, and current design procedures assume that recycled materials have similar properties to those of typical virgin

rap vs virgin aggregate properties pdf

VISCOELASTIC FATIGUE DAMAGE AND PERMANENT

Contractor Asphalt Mix Design Approval Procedures 1. SCOPE 1.1 This practice describes the procedures for asphalt mix design approval, the time required to perform the required tests, and the cost of the testing. 2. REFERENCED DOCUMENTS 2.1 AASHTO Standards : T 84 Specific Gravity & Absorption of Fine Aggregate T 85 Specific Gravity & Absorption of Coarse Aggregate T 90 …

rap vs virgin aggregate properties pdf

EVALUATION OF ASPHALT BINDER CHARACTERISTICS OF

of 0.5 percent of the aggregate in the reclaimed asphalt pavement (RAP) portion. c. Add more lime and an approved heat-stable, anti-stripping additive that meets the requirements of Subsection 831.2.04, “Heat Stable Anti-Stripping Additive,” if necessary, to meet requirements for mixture properties.

rap vs virgin aggregate properties pdf

Section 828 Hot Mix Asphaltic Concrete Mixtures

replacement for more expensive virgin aggregate. Guthrie et al. (2007) conducted freefree resonant column tests on RAP and - natural aggregate blends to evaluate the effects of percentage change of RAP …

rap vs virgin aggregate properties pdf

Cement Treated RAP Mixes for Roadway Bases

gravity of RAP and virgin aggregates is needed to calculate the voids in mineral aggregates (VMA) in the Superpave mix design. Even if the properties of virgin aggregate and binder are available, they are different from what is left in RAP and it is required to make a couple of assumptions, including asphalt absorption (P ba), to calculate the . In this study, Superpave mixes with 20, 30, and

rap vs virgin aggregate properties pdf

Welcome to Region 3 Webinar on Concrete Pavement Recycling

RAP and virgin 20mm aggregate were used in proportions of 0% RAP/ 100% Virgin aggregate, 20% RAP/ 80% virgin aggregate and then incrementally the RAP percentage was increased by 20% replacing the virgin aggregate until 100% RAP was used in the design mix.

rap vs virgin aggregate properties pdf

R E S E A R C H P R O G R A M S mdt.mt.gov

proportions of RAP with virgin aggregate at different temperatures and no additional liquid AC. The experiment took place the morning of Wednesday, November 4, 2009 at the Crane Creek Asphalt (A division of Mathy Construction) Plant No. 84 shown in Figure 1 and located at 680

rap vs virgin aggregate properties pdf

Enhanced mortar approach to characterize the effect of

such as reclaimed asphalt pavement (RAP) and recycled concrete aggregate (RCA), in road foundations, and current design procedures assume that recycled materials have similar properties to those of typical virgin

Rap vs virgin aggregate properties pdf - Prediction of Virgin Aggregate Temperature in Asphalt

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