Asphalt Mix Design - FPA

Asphalt Mix Design Danny Gierhart, P.E. Asphalt Institute Regional Engineer Tuttle, Oklahoma Asphalt Materials, Mix Designs, and Plants . HMA Mix Design Strength/ Stability Rut ... Laboratory Method of Mixing Bituminous Mix 1. If using RAP or RAS and a substitute binder in lieu of originally-specified binder, select mixing temperature for ...

Recycling responsibly | Asphalt magazine

This report was based on the work from "NCHRP 9-12, Incorporation of Reclaimed Asphalt Pavement in the Superpave System." More recently, further information has been published in the Asphalt Institute's "MS-2, Asphalt Mix Design Methods." Even RAS has ever-changing specifications on …

Asphalt Mix Design For The Illinois Tollway - Asphalt Plus LLC

Dry process rubber was used with significantly higher amounts of RAP and RAS (Asphalt Binder replacements of up to 51%) along with a significantly softer binder (46 -34) to produce a asphalt mix design that was both durable and significantly less expensive than traditional mixes.

Missouri Department of Transportation Patrick K. McKenna ...

SHRP test sections is to study asphalt mix performance with different percentages of effective binder replacement from recycled asphalt pavement (RAP) and shingles (RAS), varied asphalt binder grades, varied mix design parameters, and different warm mix technologies.

Asphalt Pavement | Caltrans

There are also two types of rubberized OGFC mixes: rubberized hot mix asphalt-open graded (RHMA-O) and RHMA-O-high-binder (RHMA-O-HB). The engineering design of flexible pavement structures is not an exact science. It is not possible to formulate one set of design criteria that could meet the requirements of every road everywhere.

Post Consumer Relaim Asphalt Singles Spec and Mix Design

RAS – Reclaimed Asphalt Shingles MRAS – Manufacturer-waste RAS PRAS – Post-consumer RAS (Tear-offs) Shingles are allowed up to 6% by weight in the asphalt mix design Remove deleterious materials (<0.5%) Do not add new RAS to processed stockpile MRAS and PRAS shall not be blended

Policy for Asphalt Mix Designs Approved for Projects

Asphalt Mix Design Policy Rev 07/07/2020 . Request for Transfer. Transfer requests are usually processed within three days of the request for an approved asphalt mix design. Transfer requests included with a new asphalt mix design will be processed after the new mix design is approved. Other items related to transfer requests are listed below. 1.

Asphalt QMS - 2016

8-2 8.3 Inserted statement additional limits for maximum of 5% RAS in OGAFC mixes. 8-3 8.3 Inserted table showing additional mix design limits for RAS mixes. 8-6 8.6 Second paragraph replaced with appropriate paragraph from 2012 Specifications.

RAP Mix Design for HMA Pavements | Roads & Bridges

The procedure is essentially the same as presented in the Asphalt Institute's MS-2 and MS-20 publications and has been the primary method used for RAP mix design since its development. Viscosity blends in RAP When the viscosity blending approach was first introduced, the graphical solution to percentage RAP was used for each RAP mix design.

Balanced Mix Design: The Need and the Process

with proper design. •Balanced RAP/RAS mix design for project-specific conditions is recommended for use. –Hamburg test for rutting/moisture damage –OT for cracking; Project-specific OT requirement –Max. density to control potential bleeding •Different approaches are available for improving RAP/RAS mix performance if needed.

Hot Mix Asphalt - Illinois Department of Transportation

Minimum Private Laboratory Requirements for Construction Materials Testing or Mix Design; Reclaimed Asphalt Shingle (RAS) Sources; Storage of Hot Mix Asphalt (HMA) Laboratory/Field Test Procedures. Clicking a hot link below will take you directly to the test procedure listed in the title. In order for these materials to be approved/qualified ...

:,,, Abstract: To improve the performance of hot recycled asphalt pavement and effectively increase the reclaimed asphalt pavement (RAP) use, the research progress is reviewed for the key technical issues in the mix design of hot in-plant recycled asphalt mixture.The paper summarizes the evaluation methods for RAP ...

Use of RAP & RAS in High Binder Replacement Asphalt ...

than 30% total binder replacement. In addition to mix - ture design and plant production practices, economic and environmental benefits of the use of RAP and RAS are discussed in detail, along with pavement design and pavement performance information. Without a doubt, the use of RAP and RAS …

Development of new mix design method for asphalt mixtures ...

However, no mix design method for asphalt mixtures containing RAP/RAS/rejuvenators has been established yet. Clearly, the use of rejuvenators needs to be updated to reflect today's performance grade binder specification, advanced asphalt mix …

Advanced Mix Design (WMA, RAP, RAS)

The use of warm mix asphalt (WMA), reclaimed asphalt pavement (RAP), and recycled asphalt shingles (RAS) has significantly increased in recent years as a result of construction costs and environmental issues. This course is designed to provide information useful for designing mixes and making decisions about the use of WMA, RAP, and RAS.

Recommendations for Mix Design Using RAP/RAS

Recommendations for Mix Design Using RAP/RAS 1. CalAPACalAPACalAPACalAPA 2016 Spring Conference2016 Spring Conference2016 Spring Conference2016 Spring Conference Asphalt Institute's recommendations for Mix Design Using RAP / RAS Robert P. Humer, PE. Sr. Regional Engineer (for CA, AZ, NV, OR, WA and HI) Asphalt Institute 3625 Thousand Oaks Blvd., …

Reclaimed Asphalt Pavement (RAP) and Reclaimed Asphalt ...

Designer Note: Use this version of the RAP/RAS Special Provision instead of the BDE version of the same name. Also, use the District Special Provision "HMA Mixture Design Requirements (D-4)" when using this RAP/RAS Special Provision. RECLAIMED ASPHALT PAVEMENT AND RECLAIMED ASPHALT SHINGLES (D-4) Effective: April 25, 2014

Asphalt Balanced Mix Design

Balanced mix design (BMD) for asphalt construction is used to design an optimum asphalt content between problems with rutting on one end and cracking on the other. Tests that are used to determine these parameters are the Hamburg wheel tracking test, the overlay test, the ideal cracking test and shear bond strength testing.

HOT MIX ASPHALT PAVEMENT DESIGN GUIDE

The pavement design requires the proper hot mix asphalt paving mixtures for the base and surface pavements. It is important that a Job Mix Formula for the paving mixture be established for and approved by the engineer. A reputable hot mix asphalt producer,providing standard

Asphalt Pavement Design Guide

Asphalt Pavement Design Guide for Low-Volume Roads and Parking Lots ... (RAP), recycled asphalt shingles (RAS), and ground tire rubber (GTR), among others. Additionally, warm mix asphalt (WMA) can be used to reduce production and construction temperatures and reduce energy consumption.

ASPHALT SHINGLES

401.04 Reclaimed Asphalt Concrete Pavement and Reclaimed Asphalt Shingles Determine RAS properties and usage as follows. Use no more than 5.0 percent RAS by dry weight of mix. For design assume 18.0 percent available RAS binder. Determine gradation and specific gravity according to AASHTO PP 53-09, Section 5 or subsequent AASHTO applicable ...

RAP, RAS and Durable Asphalt Pavements

RAP, RAS and Durable Asphalt Pavements. Presentation by Dr. Adam Hand, University of Nevada, Reno, on the latest research and performance data on the use of RAP, RAS and other Durable Asphalt Pavement Mixes. Presentation delivered during the CalAPA Fall Asphalt Pavement Conference Oct. 26-27, 2016 in Sacramento, Calif.

ALDOT-384-95

reclaimed asphalt shingles (RAS) in accordance with ALDOT-372. The handling, testing, and mixture design using RAP/RAS shall be in accordance with ALDOT-372. Refer to Section 410 of the ALDOT specifications for allowable usage of RAP/RAS. 5.1.3. Asphalt Binder The asphalt binder used in the mixture design shall meet the

Reclaimed Asphalt Shingles (RAS)

Tier 2 - 18% to 27% RAP and/ or RAS (binder replacement) ( continued) When using RAS in Tier 2 : The asphalt binder grade will be selected using a blending chart for high and low temperatures. Another option : When using only RAP in Tier 2 : A blending chart may be used to select the high and low temperatures of the binder

Performance of Recycled Asphalt Shingles in Hot Mix …

(factors) of RAS that include RAS grind size, RAS percentage, RAS source (post-consumer versus post-manufactured), RAS in combination with warm mix asphalt technology, RAS as a fiber replacement for stone matrix asphalt, and RAS in combination with ground tire rubber.

Best Practices for RAP and RAS Management

design, and quality control practices during production of asphalt mixtures containing RAP. A brief section also presents best practices for management of RAS for use in asphalt paving mixtures. Good RAP and RAS management practices are important to ensure the greatest economic benefit of these materials and the highest quality asphalt mixtures.

Asphalt Mix Design with RAP - Asphalt Institute

Mix design considerations include asphalt binder grade selection, testing of RAP materials, laboratory handling, and analysis procedures needed to conduct a successful asphalt mix design using RAP. Who Should Attend. This webinar is intended for an audience of technicians and engineers who are familiar with the asphalt mix design process ...

Best Practice for Using RAS in HMA

the mix design issues when incorporating RAS, production, and field construction of RAS mixes. Finally, this report concludes with a summary described in Chapter 5. The Appendices give a detailed literature review on the use of RAS in asphalt mixes.

HMA Mix Design Submittal - Wa

Warm Mix Asphalt (WMA) mix designs will not be accepted with > %20 RAP and/or any amount of RAS. Blended Asphalt and Recycled Material Information Grade of Asphalt Binder (PGAB) Pb Asphalt Binder (PGAB) by Wt of Mix: Pb of RAP : Recycling Agent % Recycling Agent by Wt. of Binder: Pb of RAS % Asphalt Binder Contributed from RAP by ...

MIXING and COMPACTION RECOMMENDATIONS for WARM …

temperatures for asphalt mixtures with RAS. Some asphalt mixture suppliers are looking at utilizing warm mix asphalt (WMA) technologies to help with compaction, but still limited information exists on the use of WMA with RAS and how the mixing and compaction properties are influenced.

Superpave Design Guidelines for Using Hot-Mix Recycled ...

Mix Design a. A ≤ 15% RAP mix design or a 5% RAS mix design is formulated based on an approved mix design and similar in composition (asphalt content and gradation) to the design. A one-point design (See Note 4) may be sufficient for submission of the mix design for review, if …

Fix your mix | Asphalt magazine

However, by maintaining minimum VMA, the proper design percentage of air voids, and more fully planning for the impact of RAP and RAS in the mix, we can improve our asphalt mix designs. For further information about RAP and RAS, see chapter 11 in the Asphalt Institute's "MS-2, Asphalt Mix Design Methods, 7th Edition" available at ...