Performance Analysis of Asphalt Mixtures Modified with Ground Tire Rubber Modifiers and Recycled Materials
The usage of Ground Tire Rubber (GTR) in asphalt pavements has gained renewed interest due to its potential sustainability, economic, and performance benefits. This study focuses on asphalt mixtures designed with three different rubber modifier products including (1) a terminal-blend GTR, (2) a dry-...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2019-03-01
|
Series: | Sustainability |
Subjects: | |
Online Access: | https://www.mdpi.com/2071-1050/11/6/1792 |
id |
doaj-5b9ade90d08c4f94b27592f4f481960f |
---|---|
record_format |
Article |
spelling |
doaj-5b9ade90d08c4f94b27592f4f481960f2020-11-24T21:52:16ZengMDPI AGSustainability2071-10502019-03-01116179210.3390/su11061792su11061792Performance Analysis of Asphalt Mixtures Modified with Ground Tire Rubber Modifiers and Recycled MaterialsPunyaslok Rath0Joshua E. Love1William G. Buttlar2Henrique Reis3Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO 65211, USADepartment of Industrial and Enterprise Systems Engineering, University of Illinois, Urbana-Champaign, IL 61801, USADepartment of Civil and Environmental Engineering, University of Missouri, Columbia, MO 65211, USADepartment of Industrial and Enterprise Systems Engineering, University of Illinois, Urbana-Champaign, IL 61801, USAThe usage of Ground Tire Rubber (GTR) in asphalt pavements has gained renewed interest due to its potential sustainability, economic, and performance benefits. This study focuses on asphalt mixtures designed with three different rubber modifier products including (1) a terminal-blend GTR, (2) a dry-process, chemically processed rubber product, and (3) a terminal-blend rubber-polymer hybrid product. The modifications were incorporated into Illinois Tollway’s approved Stone Matrix Asphalt (SMA) designs using (1) a base binder (PG 58-28), (2) a softer binder (PG 46-34), and (3) a softer binder with higher recycled content. Disk-shaped Compact Tension (DC(T)) test, Hamburg Wheel Tracking Test (HWTT) and Acoustic Emission (AE) tests were performed to characterize the mixtures. The fracture energy for most mixtures met the stringent criteria of 690 J/m<sup>2</sup> and the rut depths measured were less than 6 mm at 20,000 wheel passes. A Hamburg-DC(T) plot suggests that higher amounts of RAP/RAS (RAP: Reclaimed Asphalt Pavement; RAS: Reusable Asphalt Shingles) can be successfully used if a suitably soft base binder is employed.https://www.mdpi.com/2071-1050/11/6/1792ground tire rubber (GTR)disk-shaped compact tension (DC(T))rubber modifierreclaimed asphalt pavement (RAP)reusable asphalt shingles (RAS)pavement |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Punyaslok Rath Joshua E. Love William G. Buttlar Henrique Reis |
spellingShingle |
Punyaslok Rath Joshua E. Love William G. Buttlar Henrique Reis Performance Analysis of Asphalt Mixtures Modified with Ground Tire Rubber Modifiers and Recycled Materials Sustainability ground tire rubber (GTR) disk-shaped compact tension (DC(T)) rubber modifier reclaimed asphalt pavement (RAP) reusable asphalt shingles (RAS) pavement |
author_facet |
Punyaslok Rath Joshua E. Love William G. Buttlar Henrique Reis |
author_sort |
Punyaslok Rath |
title |
Performance Analysis of Asphalt Mixtures Modified with Ground Tire Rubber Modifiers and Recycled Materials |
title_short |
Performance Analysis of Asphalt Mixtures Modified with Ground Tire Rubber Modifiers and Recycled Materials |
title_full |
Performance Analysis of Asphalt Mixtures Modified with Ground Tire Rubber Modifiers and Recycled Materials |
title_fullStr |
Performance Analysis of Asphalt Mixtures Modified with Ground Tire Rubber Modifiers and Recycled Materials |
title_full_unstemmed |
Performance Analysis of Asphalt Mixtures Modified with Ground Tire Rubber Modifiers and Recycled Materials |
title_sort |
performance analysis of asphalt mixtures modified with ground tire rubber modifiers and recycled materials |
publisher |
MDPI AG |
series |
Sustainability |
issn |
2071-1050 |
publishDate |
2019-03-01 |
description |
The usage of Ground Tire Rubber (GTR) in asphalt pavements has gained renewed interest due to its potential sustainability, economic, and performance benefits. This study focuses on asphalt mixtures designed with three different rubber modifier products including (1) a terminal-blend GTR, (2) a dry-process, chemically processed rubber product, and (3) a terminal-blend rubber-polymer hybrid product. The modifications were incorporated into Illinois Tollway’s approved Stone Matrix Asphalt (SMA) designs using (1) a base binder (PG 58-28), (2) a softer binder (PG 46-34), and (3) a softer binder with higher recycled content. Disk-shaped Compact Tension (DC(T)) test, Hamburg Wheel Tracking Test (HWTT) and Acoustic Emission (AE) tests were performed to characterize the mixtures. The fracture energy for most mixtures met the stringent criteria of 690 J/m<sup>2</sup> and the rut depths measured were less than 6 mm at 20,000 wheel passes. A Hamburg-DC(T) plot suggests that higher amounts of RAP/RAS (RAP: Reclaimed Asphalt Pavement; RAS: Reusable Asphalt Shingles) can be successfully used if a suitably soft base binder is employed. |
topic |
ground tire rubber (GTR) disk-shaped compact tension (DC(T)) rubber modifier reclaimed asphalt pavement (RAP) reusable asphalt shingles (RAS) pavement |
url |
https://www.mdpi.com/2071-1050/11/6/1792 |
work_keys_str_mv |
AT punyaslokrath performanceanalysisofasphaltmixturesmodifiedwithgroundtirerubbermodifiersandrecycledmaterials AT joshuaelove performanceanalysisofasphaltmixturesmodifiedwithgroundtirerubbermodifiersandrecycledmaterials AT williamgbuttlar performanceanalysisofasphaltmixturesmodifiedwithgroundtirerubbermodifiersandrecycledmaterials AT henriquereis performanceanalysisofasphaltmixturesmodifiedwithgroundtirerubbermodifiersandrecycledmaterials |
_version_ |
1725875732750532608 |