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Asphalt Sustainable Pavement

Every year nearly 100 million tons of RAP is recycled back into new asphalt pavement in the U S ia began asphalt recycling following successful 1979 and 1980 ia Department of Transportation research projects incorporating 45-50% RAP in ia DOT mixes Get price

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Recycling Asphalt Pavements: Past Present and Future

Recycling Asphalt Pavements: Past Present and Future Jeffrey Melton Outreach Director mixtures within the framework of the M-E Pavement Design Guide Project 41 - Determination of Moisture Damage • The future of utilizing recycled materials including RAP Get price

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Why More Recycling of Asphalt Pavements?

Some Facts to Start: • Asphalt is 95% Stone and 5% Asphalt • 2 6M Miles of US Roads are 94% Surfaced with Asphalt • 85% of Parking Lots Airports are Surfaced with Asphalt • There are 4 000 mixing plants in the USA • In US 500 000 000 tons of Asphalt are produced annually • 60 000 000 tons is recycled into pavement annually • 40 000 000 tons is recycled into other applicationsGet price

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ASPHALT PAVEMENT

because asphalt is America's most recycled material it saves taxpayers more than $300 million a year The Asphalt Pavement Alliance has awarded its Perpetual Pavement Awards to 69 asphalt pavements since 2001 In order to qualify for this award the agency must submit documentation showing that the pavement has lasted moreGet price

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for Low Volume Roads and Parking Lots

Asphalt pavements offer high skid re-sistance provide contrast with pavement markings and have reduced glare Sustainability Asphalt pavements are recyclable and can be composed of recycled materials including reclaimed asphalt pave-ment (RAP) recycled asphalt shingles (RAS) and ground tire rubber (GTR) among others Get price

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Upcoming Meetings and Events

Upcoming Meetings and Events NAPA organizes meetings and events in the asphalt industry These events attract individuals from across the industry: contractors DOT personnel construction managers environmental managers engineers designers estimators business executives upper management young professionals vendors and more Get price

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DDC Features: Green Asphalt

Right now the City uses a minimum of 30% recycled asphalt pavement (RAP) to create new asphalt according to Local Law 71 DDC together with Green Asphalt wants to make that Green Asphalt based in Long Island City is one of the only hot mix asphalt plants in the country that produces RAP and is the only asphalt plant that does so in New York City Get price

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Recycled Asphalt Mixes

Recycled asphalt mixes For over ten years in a row asphalt pavement is the most recycled material in America! Nearly 100 million tons of recycled asphalt pavement (RAP) is re-used in the U S every year RAP has been used widely for more than 30 years and now makes up about 12 percent of the volume of the asphalt mixtures produced inGet price

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Recycled asphalt (RA) for pavements

Second RA can be recycled Good quality control is critical in determining the use of recycled material in construction projects This chapter discusses various methods for RA assessment mix design mechanical testing procedures recycling methods and future trends in the recycling of asphalt pavements Get price

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IDEALS @ Illinois: Reclaimed Asphalt Pavement — A

The Illinois Department of Transportation's current method of RAP HMA design provides contribution for the residual asphalt binder from the RAP based on solvent extractions This means that the amount of asphalt binder is reduced by the full amount of asphalt binder in the RAP for the percentage specified Get price

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Innovations in Recycled Asphalt Pavement (RAP)

5% Loss -100 Revolutions 23% Loss –500 Revolutions Extracted Sieve Analysis: 1 2 3 Ave 3 (ASTM C136 C117) 100 100 100 100 100 No 4 37 42 38 39 51 No 8 5 8 7 7 18 No 16 3 5 4 4 14 No 30 3 5 3 4 12 No 200 2 3 3 3 6 Asphalt Cont (%): 3 9 Cleanness Value: Get price

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Sustainability Brochure

he use of reclaimed asphalt pavement (RAP) has been widespread for about 30 years 11 Asphalt pavement is America's most recycled material Every year more than 100 million tons of asphalt pavement material is reclaimed and virtually all of it is reused or recycled into new pavements Materials from other industries including roofingGet price

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Publications

Reports and PapersX Li N Gibson and J Youtcheff Evaluation of Asphalt Mixture Cracking Performance Using Monotonic Direct Tension Test in the AMPT Journal of Road Material and Pavement Design: Papers from the 92nd Association of Asphalt Paving Technologists Annual Meeting 2017 Get price

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Life Cycle Assessment of Asphalt Pavement Maintenance

the design construction operation and maintenance of highways airports and railroad including pavements There are approximately 4 2 million kilometers (2 6 million miles) of paved public roads in the United States including concrete and asphalt pavements Pavements pose a particularGet price

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Stationary Asphalt Plants

Create brand new state-of-the-art asphalt plants capable of creating recycled asphalt pavements When markets are large dedicated recycle stationary plant is your best option Reliable and efficient conventional plant components make this plant less expensive to own and operate than anything else on the market 120 – 500 TPH Get price

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Asphalt appears to have remained largely unchanged over

While in most cases the look of asphalt pavements hasn't changed much since the 1800s the technologies used to produce and place it are evolving constantly Some of the innovations are experienced in the form of smoother longer-lasting pavementsGet price

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Boggs Paving partners reclaimed asphalt pavement and post

Dec 07 2010Paving was performed at approximately 35 fpm for both courses All mixes used on the project also contained percentages of reclaimed asphalt pavement (RAP) for the hot mix designs Get price

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Projects

Research Assistants Working on Project: Gonzalo Arredondo Description: The design and construction of asphalt pavements with Recycled (or Reclaimed) Asphalt Pavement (RAP) have been encouraged nationwide as a sustainable pavement practice and currently more than 100 million tons of the material are used in pavement related activities every year Typically recycling projects use between 10 and Get price

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ADVANCEMENTS IN ASPHALT SUSTAINABILITY

from old asphalt pavements is reused in new pavements 32%+ Nearly a third of all asphalt pavement mixtures are produced using warm-mix technologies $2 8B+ from recycled materials compared to the cost of raw materials SAVINGS WARM-MIX technologies have the benefit of reducing energy consumption which decreases the production of greenhouse gases Get price

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Processes

Our single-unit Cold In-Place Recycling Train excavates the existing asphalt pavement to a depth of 3 to 5 inches to eliminate cracks ruts and oxidized asphalt The machines down-cutting action sizes the material and immediately blends it with a specially formulated asphalt emulsion that Get price

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4 STRUCTURAL DESIGN

Asphalt mixtures currently analyzed in the mechanistic-empirical design procedure include dense-graded open-graded sand-asphalt and recycled asphalt pavements ARA 2004 The design procedure is limited to these asphalt types since these were the only asphalt pavement types included in the LTPP database with sufficient data Get price

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Using recycled asphalt shingles in asphalt pavements

Using recycled asphalt shingles in asphalt pavements About one million tons is waste produced by the roofing manufacturers and about 10 million tons is waste produced by residential tear-off shingles The 11 million tons amounts to about 8 percent of the nation's total building-related waste Recycling this waste stream makes economical and environmental sense Get price

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Requirements for successful asphalt pavement recycling

Requirements for successful asphalt pavement recycling There are some additional costs but it's 100 percent recycled Cold depth recycling goes the deepest 12-14 inches down on the road mixes it up and puts it back on the road as a new Most states do this form of asphalt recycling Get price

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Improving the Asphalt Pavements Sustainability

Reclaimed asphalt pavement (RAP) recycled asphalt shingles (RAS) and ground tire rubber (GTR) are the three main recycled materials that have been be incorporated in asphalt mixtures used to Get price

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Development of Mix Design Procedure for Cold In

The main objective of this study is to determine mix design parameters for cold in-place recycling with foamed asphalt First the foaming process of laboratory foaming equipment was validated by varying the water and asphalt content 1 3% water content was adopted to create the optimum foaming characteristics in terms of the expansion ratio and the half-life at 170C under air pressure of Get price

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Innovation in Asphalt Pavements

Aug 08 2019Warm mix Nearly 100 percent of asphalt pavement removed during resurfacing or reconstruction of a road is put back to use in new roads When used in new asphalt pavement mixtures the asphalt binder in reclaimed asphalt pavement is reactivated conserving natural resources and Get price

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MIX DESIGN USING ASPHALT MILLINGS

A 1 9-km (1 2-mi) section of the US-64 North frontage road in Pawnee County was rehabilitated with a 5-cm (2-in ) thick overlay using recycled asphalt millings The section was divided into four approximately equal length test sections A different type of emulsion was used to rejuvenate the asphalt millings for each test section Get price

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Guidelines for Evaluation Mix Design and Field Acceptance

Cold Recycling of Asphalt Pavements using Solventless Emulsion 965 01 Scope This document provides methods and requirements for investigation design construction-management and acceptance of cold recycled either in-place (CIR/CIPR) or central plant mixed (CCPR) asphalt pavement using solventless emulsion and any corrective additives Get price

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