Submit

Login Login

Register Register

Home / Journals / FDMP / Online First / doi:10.32604/fdmp.2023.044000
Journal Menu
Special lssues
Table of Content

All issues

Online First

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

Open Access

ARTICLE

Performance Characterization of CR/PU Asphalt for Potential Application in Assembled Fast-Repairing Engineering

Hong Pang1, Ao Lu1, Ming Xiong1, Chen Chen1, Xian Cao1, Xiong Xu2,3,*, Jing Wang1
1 Hubei Regional Management Headquarters, CCCC Asset Management Co., Ltd., Beijing, 101399, China
2 School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan, 430073, China
3 Hubei Provincial Engineering Research Center for Green Civil Engineering Materials and Structures, Wuhan Institute of Technology, Wuhan, 430073, China
* Corresponding Author: Xiong Xu. Email: xxucea@wit.edu.cn

Fluid Dynamics & Materials Processing https://doi.org/10.32604/fdmp.2023.044000

Received 18 July 2023; Accepted 13 October 2023; Published online 23 November 2023

Abstract

Conventional repairing methods for asphalt pavement have some inconveniences, such as insufficient strength, and are typically time-consuming. To address these issues, this study proposes a new technological method to design and prepare a high-performance assembled asphalt concrete block for fast repair of the potholes. A series of composite modified asphalt binders with 10% crumb rubber (CR) and different dosages (0%, 1%, 3%, 5%) of polyurethane (PU) are examined to determine the optimized binder. Subsequently, the corresponding asphalt mixtures are prepared for further comparison and assessment of engineering properties, such as moistureinduced damage, high-temperature deformation, and low-temperature cracking characteristics. The test results show that PU can significantly improve the high-temperature performance and hardness of (crumb rubber modified asphalt) CRMA binder; 3% PU contributes allowing the resistance of CRMA mixture to moisture-induced damage at higher levels, particularly under water whole immersion; as 3% PU is added, the high-temperature rutting deformation resistance of the CRMA mixture increases significantly, and the low-temperature anti-cracking properties are also improved slightly. Therefore, the innovatively designed high-quality assembled fast-repairing asphalt concrete block is recommended as an appropriate option for highway maintenance.

Keywords

Composite modified asphalt; crumb rubber; polyurethane; assembled fast-repairing asphalt concrete; maintenance engineering

  • 372

    View

  • 80

    Download

  • 0

    Like

Related articles
Copyright© 2024 Tech Science Press
© 1997-2024 TSP (Henderson, USA) unless otherwise stated

Share Link