Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Proposal of a New Framework to Assess the Bitumen Fatigue Cracking Performance of Diverse Types of Asphalt Binders under Different Temperatures and Aging Conditions

Songtao Lv
ORCID logo ,
Dongdong Ge
,
Shihao Cao
,
Dingyuan Liu
,
Wenhui Zhang
,
Cheng-Hui Li
ORCID logo ,
Milkos Borges Cabrera
* ORCID logo
Version 1 : Received: 29 November 2023 / Approved: 30 November 2023 / Online: 30 November 2023 (10:35:30 CET)

A peer-reviewed article of this Preprint also exists.

Lv, S.; Ge, D.; Cao, S.; Liu, D.; Zhang, W.; Li, C.-H.; Borges Cabrera, M. Development of a Framework for Assessing Bitumen Fatigue Cracking Performance under Different Temperatures and Aging Conditions. Buildings 2024, 14, 311. Lv, S.; Ge, D.; Cao, S.; Liu, D.; Zhang, W.; Li, C.-H.; Borges Cabrera, M. Development of a Framework for Assessing Bitumen Fatigue Cracking Performance under Different Temperatures and Aging Conditions. Buildings 2024, 14, 311.

Abstract

At present, failure definition and damage characteristic curve (DCC) analysis included in the framework to assess bitumen fatigue cracking performance have an inconsistency in ranking bitumen fatigue behaviour. This study utilized two types of self-healing polymers (STP and IPA1w) to modify the neat asphalt (NA), and research four different types of bitumens: NA, STP-modified bitumen, IPA1w-modified bitumen, and styrene-butadiene-styrene modified bitumen (SBSB), to evaluate the above-mentioned framework. All bitumens were subjected to short-term and long-term aging and tested utilizing the Linear amplitude sweep (LAS) test and simplified viscoelastic-continuum-damage (S-VECD) model. The results showed that the SBSB exhibited the highest numbers of loading cycles (in long-term aging analysis) to reach failure points at 25°C, 28°C, and 31°C which were 2290, 2340, and 2510, respectively. However, this bitumen failed to exhibit the best performance in terms of DCC assessment under the same conditions, confirming the above-mentioned inconsistency. Besides, the current failure criterion could not accurately predict bitumen fatigue behaviour under certain test conditions because two R2 values were below 0.1. As a result, this study proposed a new failure definition and failure criterion to overcome these issues. The proposed failure definition agreed with the DCC analysis to rank bitumen fatigue performance, and the proposed failure criterion showed R2 values higher than 0.9. The new framework presented the modified bitumen containing 0.5% of STP as the asphalt binder with the best fatigue cracking performance, according to the selected test conditions.

Keywords

failure definition; failure criterion; bitumen fatigue cracking performance; bitumen fatigue failure point

Subject

Engineering, Civil Engineering

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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