- document
-
Ren, S. (author)The increasing popularity of sustainable asphalt pavement stems from its advantageous attributes, such as cost-saving, environmental protection, and reductions in energy and material consumption. Although there is a desire to maximize the reuse of reclaimed asphalt (RA) waste materials in road construction, this is hindered by the poor...doctoral thesis 2024
- document
-
Ren, S. (author), Liu, X. (author), Erkens, S. (author)The low-temperature relaxation and fatigue cracking performance are two essential aspects in estimating the rejuvenation efficiency of recycling agents (RAs). This study aims to fundamentally investigate the effects of recycling agent type/dosage and aging degree of bitumen on thermodynamic and rheological properties of rejuvenated bitumen at...journal article 2024
- document
-
Ren, S. (author), Liu, X. (author), Erkens, S. (author)This study implements molecular dynamics (MD) simulations to explore the atomic-level energy properties of rejuvenated bitumen, considering the influence of different recycling agent (RA) types, dosages and aging levels of bitumen. Moreover, the potential correlations between energy indices and high-temperature performance of rejuvenated bitumen...journal article 2024
- document
-
Shi, Xuyang (author), Chen, Shuzhao (author), Wang, Qiang (author), Lu, Yijun (author), Ren, S. (author), Huang, Jiandong (author)As an environmentally responsible alternative to conventional concrete, geopolymer concrete recycles previously used resources to prepare the cementitious component of the product. The challenging issue with employing geopolymer concrete in the building business is the absence of a standard mix design. According to the chemical composition of...journal article 2024
- document
-
Wang, Ranran (author), Zhang, Jun (author), Lu, Yijun (author), Ren, S. (author), Huang, Jiandong (author)The design of geopolymer concrete must meet more stringent requirements for the landscape, so understanding and designing geopolymer concrete with a higher compressive strength challenging. In the performance prediction of geopolymer concrete compressive strength, machine learning models have the advantage of being more accurate and faster....journal article 2024
- document
-
Gao, Y. (author), Liu, X. (author), Ren, S. (author), Assaf Martinez-Streignard, E.I. (author), Liu, Pengfei (author), Zhang, Yuqing (author)Bitumen fatigue resistance is critical to determine the overall fatigue performance and service life of asphalt pavements. However, the mechanisms responsible for fatigue damage of bitumen have previously not been well understood. Molecular dynamics (MD) simulation has recently emerged as a powerful computer-aided numerical technique to model...journal article 2024
- document
-
Lin, P. (author), Liu, X. (author), Ren, S. (author), Li, Yi (author), Erkens, S. (author), Welvaarts, B. (author), Brouns, K. (author)Developed by Delft University of Technology, the tri-component polyurethane modified cold binder (PMCB) displays impressive durability and strength in asphalt mixtures, showing promise as a reliable binder for cold in-place recycling. However, when applying PMCB for rapid, in-situ recycling, the presence of moisture in reclaimed asphalt...conference paper 2024
- document
-
Ren, S. (author), Liu, X. (author), Varveri, Aikaterini (author), Khalighi, S. (author), Jing, R. (author), Erkens, S. (author)The rejuvenation efficiency of aged bitumen is the main concern when developing rejuvenating agents. It is necessary to develop a method to assess the efficiency of rejuvenators using rheological parameters in the whole frequency region. To this end, the 2S2P1D micromechanics model is adopted to fit the entire G∗ master curves of various...journal article 2023
- document
-
Lin, P. (author), Liu, X. (author), Ren, S. (author), Li, Yi (author), Xu, Jian (author), Li, Mingliang (author)High-Content SBS Polymer Modified Asphalt Mixtures (HCPMA) combined with fibers have gained popularity in porous pavement construction due to their superior performance. Although the aging behavior of HCPMA has been extensively studied, the impact of fibers on performance and aging susceptibility remains unclear. This research investigates the...journal article 2023
- document
-
Lin, P. (author), Liu, X. (author), Ren, S. (author), Xu, Jian (author), Li, Yi (author), Li, Mingliang (author)The film thickness of asphalt mixtures is critical for determining their performance and aging durability. However, understanding of the appropriate film thickness and its influence on performance and aging behavior for high-content polymer-modified asphalt (HCPMA) mixtures is still limited. This research aims to examine the relationship between...journal article 2023
- document
-
Ren, S. (author), Liu, X. (author), Erkens, S. (author)This study aims to systematically investigate the influence of rejuvenator type/dosage and the aging degree of bitumen on the rutting resistance, flow behavior, and elastic/creep potential of rejuvenated bitumen at high temperatures. The rutting parameter (G*/sinδ), rutting failure temperature (RFT) from Linear viscoelastic test (LVE), zero...journal article 2023
- document
-
Ren, S. (author), Liu, X. (author), Jing, R. (author), Gao, Y. (author), Lin, P. (author), Erkens, S. (author)Two types of elastomer/plastic compound-modified bitumen were developed by means of incorporating the reactive elastomeric terpolymer (RET) into the plastic (high-density polyethylene HDPE or recycled polyethylene RPE) modified bitumen and adding the wax residue (WR) into the bitumen/elastomer (crumb rubber CR or styrene–butadiene–styrene SBS)...journal article 2023
- document
-
Chen, Bei (author), Yu, Xin (author), Dong, Fuqiang (author), Wu, Wenxiu (author), Zu, Yuanzhe (author), Ren, S. (author)High-viscosity modified asphalt (HVMA) is the most commonly applied method in drainage asphalt pavements. However, some disadvantages of hot-mix HVMA, including high energy consumption and unavoidable environmental pollution, should be improved. Therefore, warm-mix additive (WMA) was introduced. In this paper, the effects of WMA on the...journal article 2023
- document
-
Ren, S. (author), Liu, X. (author), Erkens, S. (author)This study aims to propose critical fatigue indicators for evaluating the restoration effectiveness of various rejuvenators on the fatigue performance of aged bitumen. The influence factors of rejuvenator type/dosage and aging degree of bitumen are involved, and different fatigue parameters from linear viscoelastic (LVE), linear amplitude sweep ...journal article 2023
- document
-
Ren, S. (author), Liu, X. (author), Gao, Y. (author), Jing, R. (author), Lin, P. (author), Erkens, S. (author), Wang, H. (author)This study aims to multiscale investigate the effects of rejuvenator type, temperature, and aging degree of bitumen on the diffusion behaviors of rejuvenators (bio-oil BO, engine-oil EO, naphthenic-oil NO, and aromatic-oil AO) in aged binders. The molecular dynamics (MD) simulation method is performed to detect the molecular-level diffusion...journal article 2023
- document
-
Ren, S. (author), Liu, X. (author), Erkens, S. (author)The relaxation behavior affected by aging and rejuvenation plays a crucial role in its low-temperature cracking potential of bitumen. However, there are limited studies on the relaxation performance of rejuvenated bitumen under different rejuvenation conditions. This paper aims to propose critical indicators to assess the rejuvenation efficiency...journal article 2023
- document
-
Ren, S. (author), Liu, X. (author), van Aggelen, M. (author), Lin, P. (author), Erkens, S. (author)This study investigates the impacts of rejuvenator type/dosage and the aging degree of bitumen on the chemical and rheological properties of rejuvenated bitumen, and propose critical chemo-rheological indicators for evaluating rejuvenation efficiency. Moreover, the potential connections between essential chemical and rheological indices of...journal article 2023
- document
-
Zhang, Yi (author), Si, Chundi (author), Fan, Taotao (author), Zhu, Yuefeng (author), Li, Song (author), Ren, S. (author), Lin, P. (author)With the increasing awareness of environmental protection and attention to resource reuse, the development of high-performance and degradable green biomass pavement materials attracts a lot of interest. Lignin and bio-oil effectively combined to play a synergistic role can improve various properties of asphalt and partially replace petroleum...journal article 2023
- document
-
Dong, Fuqiang (author), Wang, Jincheng (author), Yu, Xin (author), Jiang, Mengmeng (author), Guo, Yongjia (author), Wang, Shiyu (author), Zu, Yuanzhe (author), Ren, S. (author)In this study, the environmentally friendly rejuvenators with waste thermal conductive oil, polymer, and the interfacial reinforcing agent were prepared. And the influence of the different rejuvenators on the rejuvenation mechanisms of aged SBS modified asphalt was characterized by different scales including the molecule structure, morphology...journal article 2023
- document
- Besamusca, Jeroen (author), Nahar, Sayeda (author), Lin, P. (author), Ren, S. (author), Tabatabaee, Hassan (author), Adams, Jeramie (author) book 2023