Damage evaluation of poro-elastic road surface with low polyurethane content

Gongyun Liao; Laura Soares; Hao Wang; Kongqing Qi

doi:10.1520/JTE20190828

Damage evaluation of poro-elastic road surface with low polyurethane content

Gongyun Liao, Laura Soares, Hao Wang, Kongqing Qi

Engn-Civil & Environ Engn

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

1 Scopus citations

Abstract

This study aims to evaluate the damage evolution of poro-elastic road surface with low polyurethane content (PERS-LPC) subjected to cyclic loading with two new damage indicators. A cyclic loading test and dynamic modulus test were conducted on nine different PERS-LPC specimens to develop stress-strain hysteresis curves. The variations of curve perimeter (ΔP) and the enclosed area during the unloading period (ΔA) were proposed to evaluate damage evolution of PERS-LPC specimen as compared with the existing damage indicators. X-ray computed tomography scanning images were obtained to verify the damage evolution within PERS-LPC specimens. The results showed that damage evolution of the PERS-LPC specimen could be captured by the proposed ΔP and ΔA indicators. The PERS-LPC mixture with a low amount of rubber granule (25 %) and polyurethane (4 % by total mass of rubber and aggregate) and 20 % air void exhibited good damage resistance. The study findings can be used to optimize the composition of low-cost PERS-LPC mixtures for durable design.

Original language	English (US)
Journal	Journal of Testing and Evaluation
Volume	49
Issue number	1
DOIs	https://doi.org/10.1520/JTE20190828
State	Published - Oct 14 2020

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

Keywords

Damage
Evaluation
Hysteresis curve
Polyurethane
Poro-elastic road surface

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10.1520/JTE20190828

Cite this

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title = "Damage evaluation of poro-elastic road surface with low polyurethane content",

abstract = "This study aims to evaluate the damage evolution of poro-elastic road surface with low polyurethane content (PERS-LPC) subjected to cyclic loading with two new damage indicators. A cyclic loading test and dynamic modulus test were conducted on nine different PERS-LPC specimens to develop stress-strain hysteresis curves. The variations of curve perimeter (ΔP) and the enclosed area during the unloading period (ΔA) were proposed to evaluate damage evolution of PERS-LPC specimen as compared with the existing damage indicators. X-ray computed tomography scanning images were obtained to verify the damage evolution within PERS-LPC specimens. The results showed that damage evolution of the PERS-LPC specimen could be captured by the proposed ΔP and ΔA indicators. The PERS-LPC mixture with a low amount of rubber granule (25 %) and polyurethane (4 % by total mass of rubber and aggregate) and 20 % air void exhibited good damage resistance. The study findings can be used to optimize the composition of low-cost PERS-LPC mixtures for durable design.",

keywords = "Damage, Evaluation, Hysteresis curve, Polyurethane, Poro-elastic road surface",

author = "Gongyun Liao and Laura Soares and Hao Wang and Kongqing Qi",

note = "Funding Information: The authors kindly appreciate the financial support from open fund of Guangxi Key Lab of Road Structure and Materials (Grant No. 2018gxjgclkf002) and the science project of Jiangxi Communications, People's Republic of China (Grant No. 2017C0003). Funding Information: The authors kindly appreciate the financial support from open fund of Guangxi Key Lab of Road Structure and Materials (Grant No. 2018gxjgclkf002) and the science project of Jiangxi Communications, People{\textquoteright}s Republic of China (Grant No. 2017C0003). Publisher Copyright: Copyright {\textcopyright} 2020 by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

month = oct,

day = "14",

doi = "10.1520/JTE20190828",

language = "English (US)",

volume = "49",

journal = "Journal of Testing and Evaluation",

issn = "0090-3973",

publisher = "American Society for Testing and Materials",

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T1 - Damage evaluation of poro-elastic road surface with low polyurethane content

AU - Liao, Gongyun

AU - Soares, Laura

AU - Wang, Hao

AU - Qi, Kongqing

N1 - Funding Information: The authors kindly appreciate the financial support from open fund of Guangxi Key Lab of Road Structure and Materials (Grant No. 2018gxjgclkf002) and the science project of Jiangxi Communications, People's Republic of China (Grant No. 2017C0003). Funding Information: The authors kindly appreciate the financial support from open fund of Guangxi Key Lab of Road Structure and Materials (Grant No. 2018gxjgclkf002) and the science project of Jiangxi Communications, People’s Republic of China (Grant No. 2017C0003). Publisher Copyright: Copyright © 2020 by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/10/14

Y1 - 2020/10/14

N2 - This study aims to evaluate the damage evolution of poro-elastic road surface with low polyurethane content (PERS-LPC) subjected to cyclic loading with two new damage indicators. A cyclic loading test and dynamic modulus test were conducted on nine different PERS-LPC specimens to develop stress-strain hysteresis curves. The variations of curve perimeter (ΔP) and the enclosed area during the unloading period (ΔA) were proposed to evaluate damage evolution of PERS-LPC specimen as compared with the existing damage indicators. X-ray computed tomography scanning images were obtained to verify the damage evolution within PERS-LPC specimens. The results showed that damage evolution of the PERS-LPC specimen could be captured by the proposed ΔP and ΔA indicators. The PERS-LPC mixture with a low amount of rubber granule (25 %) and polyurethane (4 % by total mass of rubber and aggregate) and 20 % air void exhibited good damage resistance. The study findings can be used to optimize the composition of low-cost PERS-LPC mixtures for durable design.

AB - This study aims to evaluate the damage evolution of poro-elastic road surface with low polyurethane content (PERS-LPC) subjected to cyclic loading with two new damage indicators. A cyclic loading test and dynamic modulus test were conducted on nine different PERS-LPC specimens to develop stress-strain hysteresis curves. The variations of curve perimeter (ΔP) and the enclosed area during the unloading period (ΔA) were proposed to evaluate damage evolution of PERS-LPC specimen as compared with the existing damage indicators. X-ray computed tomography scanning images were obtained to verify the damage evolution within PERS-LPC specimens. The results showed that damage evolution of the PERS-LPC specimen could be captured by the proposed ΔP and ΔA indicators. The PERS-LPC mixture with a low amount of rubber granule (25 %) and polyurethane (4 % by total mass of rubber and aggregate) and 20 % air void exhibited good damage resistance. The study findings can be used to optimize the composition of low-cost PERS-LPC mixtures for durable design.

KW - Damage

KW - Evaluation

KW - Hysteresis curve

KW - Polyurethane

KW - Poro-elastic road surface

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Damage evaluation of poro-elastic road surface with low polyurethane content

Abstract

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