Standard Practice for Reclamation of Scrap and Waste Asphalt Shingles to Produce Reclaimed Asphalt Shingles (RAS) for Use in Transportation Applications

10.1520/d8012 ◽  
2019 ◽  
Author(s):  
Keyword(s):  
Reclaimed Asphalt ◽  
Standard Practice ◽  
Transportation Applications ◽  
Asphalt Shingles

Use of Blended Binder Tests to Estimate Performance of Mixtures with High Reclaimed Asphalt Pavement/Recycled Asphalt Shingles Content

2021 ◽  
pp. 036119812199742
Author(s):  
Yuan Zhang ◽  
Daniel Swiertz ◽  
Hussain U. Bahia
Keyword(s):  
Asphalt Pavement ◽  
Effective Means ◽  
Creep Recovery ◽  
Reclaimed Asphalt Pavement ◽  
Recycled Asphalt ◽  
Performance Properties ◽  
Reclaimed Asphalt ◽  
Recycled Asphalt Shingles ◽  
Asphalt Shingles

The purpose of this study is to assess the use of blended binder tests to estimate mixture performance properties of high reclaimed asphalt pavement (RAP)/recycled asphalt shingles (RAS) mixtures utilizing recycling agents as a means to evaluate different recycling agents and estimate their doses for a given mixture. Blended binder properties are measured by using standard performance grading (PG) and PG+ test methods and correlating the results with corresponding performance properties of mixtures. Blended binders consisting of virgin and recovered binders and recycling agents were prepared and tested for PG grading properties, multiple stress creep recovery grades, and linear amplitude sweep fatigue life after the rolling thin-film oven and pressure aging vessel aging. Mixtures were tested for rutting resistance and cracking resistance at intermediate temperature and at low temperatures after being subjected to short-term oven aging and long-term oven aging. The correlation between the blended binder properties and mixture performance properties is used to identify the binder test parameters that can be used to predict the long-term performance of high RAP/RAS mixtures and the effects of various recycling agents. Results generally indicate that use of direct testing of recovered binders with recycling agents is an effective means to estimate required initial dose for recycling agent, and testing actual blended binders can be used to predict mixture performance-related properties for the testing conditions used in this study.

Impact on the use of Reclaimed Asphalt Shingles on mixture and recovered binder properties

2014 ◽  
pp. 1883-1892 ◽  
Author(s):  
Gerald Reinke ◽  
Stacy Glidden ◽  
Steve Engber ◽  
Mary Ryan ◽  
Doug Herlitzka
Keyword(s):  
Reclaimed Asphalt ◽  
Asphalt Shingles
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