Acoustic emission quantitative evaluation of rejuvenators to restore embrittlement temperatures to oxidized asphalt mixtures

Zhe Sun; Behzad Behnia; William G. Buttlar; Henrique Reis

doi:10.1016/j.conbuildmat.2016.09.108

Acoustic emission quantitative evaluation of rejuvenators to restore embrittlement temperatures to oxidized asphalt mixtures

Zhe Sun, Behzad Behnia, William G. Buttlar, Henrique Reis

Research output: Contribution to journal › Article › peer-review

Abstract

An acoustic emission (AE) approach to evaluate the effectiveness of rejuvenators in restoring aged asphalt concrete to its low-temperature performance grade is presented. Specimens, oven-aged for 36 h at 135 °C, were treated with rejuvenators (10% of binder weight). After 2, 4, 6, and 8 weeks of dwell time, the specimens were tested using AE while being cooled down to −35 °C. It was observed that after four weeks of dwell time, the rejuvenated-treated specimens had recuperated the original embrittlement temperatures. After eight weeks, the specimens’ embrittlement temperature were about three grades (∼18 °C) lower than those of the aged temperatures.

Original language	English (US)
Pages (from-to)	913-923
Number of pages	11
Journal	Construction and Building Materials
Volume	126
DOIs	https://doi.org/10.1016/j.conbuildmat.2016.09.108
State	Published - Nov 15 2016

Keywords

Acoustic emission
Asphalt binders
Asphalt concrete
Embrittlement temperature
Rejuvenators
Source location

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

Online availability

10.1016/j.conbuildmat.2016.09.108

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title = "Acoustic emission quantitative evaluation of rejuvenators to restore embrittlement temperatures to oxidized asphalt mixtures",

abstract = "An acoustic emission (AE) approach to evaluate the effectiveness of rejuvenators in restoring aged asphalt concrete to its low-temperature performance grade is presented. Specimens, oven-aged for 36 h at 135 °C, were treated with rejuvenators (10% of binder weight). After 2, 4, 6, and 8 weeks of dwell time, the specimens were tested using AE while being cooled down to −35 °C. It was observed that after four weeks of dwell time, the rejuvenated-treated specimens had recuperated the original embrittlement temperatures. After eight weeks, the specimens{\textquoteright} embrittlement temperature were about three grades (∼18 °C) lower than those of the aged temperatures.",

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doi = "10.1016/j.conbuildmat.2016.09.108",

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AU - Sun, Zhe

AU - Behnia, Behzad

AU - Buttlar, William G.

AU - Reis, Henrique

PY - 2016/11/15

Y1 - 2016/11/15

N2 - An acoustic emission (AE) approach to evaluate the effectiveness of rejuvenators in restoring aged asphalt concrete to its low-temperature performance grade is presented. Specimens, oven-aged for 36 h at 135 °C, were treated with rejuvenators (10% of binder weight). After 2, 4, 6, and 8 weeks of dwell time, the specimens were tested using AE while being cooled down to −35 °C. It was observed that after four weeks of dwell time, the rejuvenated-treated specimens had recuperated the original embrittlement temperatures. After eight weeks, the specimens’ embrittlement temperature were about three grades (∼18 °C) lower than those of the aged temperatures.

AB - An acoustic emission (AE) approach to evaluate the effectiveness of rejuvenators in restoring aged asphalt concrete to its low-temperature performance grade is presented. Specimens, oven-aged for 36 h at 135 °C, were treated with rejuvenators (10% of binder weight). After 2, 4, 6, and 8 weeks of dwell time, the specimens were tested using AE while being cooled down to −35 °C. It was observed that after four weeks of dwell time, the rejuvenated-treated specimens had recuperated the original embrittlement temperatures. After eight weeks, the specimens’ embrittlement temperature were about three grades (∼18 °C) lower than those of the aged temperatures.

KW - Acoustic emission

KW - Asphalt binders

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KW - Embrittlement temperature

KW - Rejuvenators

KW - Source location

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Acoustic emission quantitative evaluation of rejuvenators to restore embrittlement temperatures to oxidized asphalt mixtures

Abstract

Keywords

ASJC Scopus subject areas

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