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Sustainable Recycling Techniques of Pavement Materials II

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A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Construction and Building Materials".

Deadline for manuscript submissions: 20 September 2024 | Viewed by 10379

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Dr. Jiaqing Wang

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Guest Editor

College of Civil Engineering, Nanjing Forestry University, Nanjing, China
Interests: sustainable infrastructure materials; rubberized concrete; fiber-reinforced concrete; utilization of MSW; asphalt concrete materials; material macro and micro characterizations; FEM fracture analysis
Special Issues, Collections and Topics in MDPI journals

Prof. Dr. Dongdong Ge

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Guest Editor

School of Traffic & Transportation Engineering, Changsha University of Science & Technology, Changsha, China
Interests: asphalt testing and characterization; asphalt pavement materials; asphalt pavement design; asphalt pavement evaluation; recycled materials for pavement
Special Issues, Collections and Topics in MDPI journals

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Dear Colleagues,

With the rapid development of infrastructure constructions, more and more existing pavements need to be recycled and reconstructed, especially recycled asphalt pavement, which consists of the world’s most recycled materials. Of all the ubiquitous things in our environment, roads are probably one of the least noticed. Our pavements see tremendous volumes of traffic and withstand considerable variations in weather and climate, and they do this on a pretty tight budget. This is only possible because all the scientists, engineers, contractors, and public works crews keep up with this incredible but straightforward material called asphalt. Therefore, innovative techniques for recycling and processing materials that could be used for new pavement construction have attracted more attention, considering their benefits in different properties. In recent years, warm and cold recycling techniques were proposed for recycled asphalt pavement (RAP) due to their benefits in temperature reductions that can effectively decrease energy consumption and CO₂ emissions. In addition, pavement materials containing municipal solid waste (MSW) were also widely studied, including but not limited to rubberized concrete, rubberized asphalt, and alternative cementitious materials for concrete pavements. Both of the techniques or materials above were applied to improve the mechanical and durability performances of newly constructed pavements and reduce the environmental effects of landfills and greenhouse gas (GHG) emissions. The exploration of their effects on the various properties of materials and structures in pavements has also been widely conducted. During the exploration, not only experimental investigations but also simulations and life cycle assessments were operated in multiple aspects to evaluate, optimize, and predict the various properties.

This Special Issue will focus on innovative and efficient techniques and materials for pavement recycling and reconstruction. The main sub-topics include pavement recycling techniques, the effective utilization of industrial and construction waste in pavement engineering, improvements in sustainable techniques for pavement materials (e.g., warm and cold recycling technology for old asphalt pavement and GHG emission reduction techniques for RAP, etc.), green low-carbon and durable pavement structures and materials, the evaluation and simulation of sustainable pavement materials, the investigation of durability performance enhancement by recycled pavement materials, and life cycle assessment (LCA) regarding the utilization of recycled and waste materials in pavement construction.

It is our pleasure to invite you to submit a manuscript for this Special Issue. Articles and review papers are acceptable for this topic.

Dr. Jiaqing Wang
Prof. Dr. Dongdong Ge
Guest Editors

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Keywords

pavement recycling techniques
industrial and construction waste utilization in pavement engineering
sustainable techniques for pavement materials
green low-carbon and durable pavement structures and materials
evaluation and simulation of sustainable pavement materials
infrastructure durability improvements by recycled pavement materials
life cycle assessment (GHG emission reduction/life cycle cost decrease attributed to the utilization of waste in pavement materials)

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Sustainable Recycling Techniques of Pavement Materials in Materials (14 articles)

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Research

25 pages, 10195 KiB

Open AccessArticle

The Research Effects of Variable Temperature and Early Strength Agent on the Mechanical Properties of Cement-Stabilized Macadam

by Yanhua Xue, Dongdong Ge, Songtao Lv, Hui Wei, Weiwei Lu and Liangchen Peng

Materials 2024, 17(15), 3720; https://doi.org/10.3390/ma17153720 - 27 Jul 2024

Viewed by 351

Abstract

In cold regions with high daily temperature gradients (>20 °C), the durability of cement-stabilized macadam (CSM) base materials is poor and prone to cracking. To effectively reduce the cracking of semi-rigid base layers in cold regions with high daily temperature gradients and extend fatigue life, this study focused on cracking and fatigue characteristics of CSM with a 10% commercial early strength agent (ESA) added by the external mixing method under different curing conditions. The ESA was manufactured by Jiangsu Subote New Materials Co., Ltd. (Nanjing, China). The curing conditions were divided into variable temperature (0–20 °C) and standard temperature (20 °C). CSM curing was carried out through a programmable curing box. The research results indicated that the variable temperature curing conditions reduced the strength and fatigue resistance of CSM and accelerated the modulus attenuation rate of CSM. At the same time, the drying shrinkage of CSM was greater. The temperature shrinkage coefficient and strain of CSM under variable temperature conditions were smaller than those under standard temperature conditions. The effect of variable temperature conditions on the cracking and durability of CSM could not be ignored in cold regions. Compared to standard temperature curing conditions, the indirect tensile strength of CSM reduced by 31.04% under variable temperature conditions, the coefficient of variation increased by 2.97 times, and the discrete type significantly increased. Compared with CSM without ESA, the dry and temperature shrinkage strains of CSM with 10% ESA were reduced by 24.65% and 26.10%, respectively. At a stress level of 0.6, compared to standard temperature curing conditions, the fatigue life of CSM decreased by 97.19% under variable temperature conditions. Under variable temperature conditions, the fatigue life of CSM with 10% ESA increased by 196 times compared to 0% ESA. Adding ESA enhanced the anti-shrinkage cracking, strength, and durability of CSM under variable temperatures. ESA incorporation effectively compensated for the weakened characteristics of CSM under variable temperature conditions. The study proposed a practical approach for boosting the durability of CSM in cold environments. Full article

(This article belongs to the Special Issue Sustainable Recycling Techniques of Pavement Materials II)

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14 pages, 3249 KiB

Open AccessArticle

Bending Fatigue Properties of Ultra-High Toughness Cementitious Composite (UHTCC)

by Pengju Wang, Kaijian Huang, Gong Shen, Yixin Miao and Jiansheng Wu

Materials 2024, 17(13), 3128; https://doi.org/10.3390/ma17133128 - 26 Jun 2024

Viewed by 761

Abstract

Ultra-High Toughness Cementitious Composite (UHTCC) represents a composite material meticulously engineered on the foundation of micromechanical principles. The multi-crack cracking and strain-hardening characteristics of UHTCC enable it to be applied to orthotropic steel decks to control the crack width. Different from most studies which only focus on hybrid fiber or fatigue characteristics, this paper studies the influence of hybrid fiber content on static mechanical properties, flexural toughness, and flexural fatigue characteristics of UHTCC under different stress levels. The compressive and flexural strength, bending toughness, and fatigue damage of UHTCC under different fiber ratios were compared, and the fatigue properties of hybrid fiber UHTCC were verified. The results reveal that hybrid fiber exerts a more pronounced effect on toughness, augmenting the maximum folding ratio by 23.7%. Single-doped steel fiber UHTCC exhibits a characteristic strain-softening phenomenon attributable to inadequate fiber content, whereas the bending toughness index of hybrid fiber UHTCC surpasses that of SF1.5P0 by 18.6%. Under low-stress conditions, UHTCC demonstrates a nearly threefold increase in bending fatigue life with a mere 1% steel fiber content, while the influence of polyvinyl alcohol (PVA) fiber on fatigue life is more significant: with an increase of only 1/5 volume content, the fatigue life increased by 29.8%, reaching a maximum increase of 43.2% at 1/4 volume content. Furthermore, the fatigue damage accumulation curve of UHTCC follows a three-stage inverted S-shaped trajectory. The inclusion of PVA fiber facilitates early initiation of stable cracking during the fatigue failure process, thereby advancing the entire strain stability development stage and mitigating external load forces through the proliferation of micro-cracks. Consequently, compared to SF1P0, the ε₀ of SF1P5 experiences a significant increase, reaching 143.43%. Full article

(This article belongs to the Special Issue Sustainable Recycling Techniques of Pavement Materials II)

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16 pages, 5492 KiB

Open AccessArticle

The Effects of Hydroxypropyl Methyl Cellulose and Metakaolin on the Properties of Self-Compacting Solidified Soil Based on Abandoned Slurry

by Liang Tang, Kaijian Huang, Gong Shen, Yixin Miao and Jiansheng Wu

Materials 2024, 17(12), 2960; https://doi.org/10.3390/ma17122960 - 17 Jun 2024

Viewed by 590

Abstract

As a new type of backfill material, Self-compacting solidified soil (SCSS) takes the abandoned slurry of cast-in-place piles after dewatering and reduction as the main raw material, which brings a problem of coordinating the working performance with the mechanical property under the condition of high mobility. In this paper, hydroxypropyl methyl cellulose (HPMC) and metakaolin were introduced as additives to solve this problem. First, the workability and mechanical properties of SCSS were regulated and optimized by means of the water seepage rate test, the flowability test, and the unconfined compressive strength test. Second, this study also used X-ray diffraction (XRD) and scanning electron microscopy (SEM) to investigate the effects of HPMC and metakaolin on the physical phase and microstructure of SCSS. In this way, the results showed that there was a significant impact on the flowability of SCSS, that is, when the dosage reached 0.3%, the water seepage rate of SCSS was reduced to less than 1%, and the compressive strength at 7 days reached its peak. At the same time, HPMC weakened the strength growth of SCSS in the age period of 7 days to 14 days. However, the addition of metakaolin promoted its compressive strength. XRD analysis showed that the additives had no significant effects on the physical phases. And, from the SEM results, it can be seen that although the water-retaining effect of HPMC makes hydration of cement more exhaustive, more ettringite (AFt) can be observed in the microstructure. In addition, it can be observed that the addition of metakaolin can generate more hydrated calcium silicate (C-S-H) due to the strong surface energy possessed by metakaolin. As a result of the above factors, SCSS filled the voids between particles and improved the interface structure between particles, thus enhanced the compressive strength. Full article

(This article belongs to the Special Issue Sustainable Recycling Techniques of Pavement Materials II)

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15 pages, 4046 KiB

Open AccessArticle

Preparation and Hydration Properties of Sodium Silicate-Activated Municipal Solid Waste Incineration Bottom Ash Composite Ground-Granulated Blast Furnace Slag Cementitious Materials

by Juan Deng, Guoxiong Wu, Yuchao Xia and Li Liu

Materials 2024, 17(10), 2406; https://doi.org/10.3390/ma17102406 - 17 May 2024

Viewed by 576

Abstract

The production of municipal solid waste incineration bottom ash (MSWIBA) is substantial and has the potential to replace cement, despite challenges such as complex composition, uneven particle size distribution, and low reactivity. This paper employs sodium silicate activation of MSWIBA composite Ground-granulated Blast Furnace slag (GGBS) to improve the reactivity in preparing composite cementitious materials. It explores the hydration performance of the composite cementitious materials using isothermal calorimetric analysis, Fourier-transform infrared (FTIR) spectroscopy, XRD physical diffraction analysis, and SEM tests. SEM tests were used to explore the hydration properties of the composite gelling. The results show that with an increase in MSWIBA doping, the porosity between the materials increased, the degree of hydration decreased, and the compressive strength decreased. When the sodium silicate concentration increased from 25% to 35%, excessive alkaline material occurred, impacting the alkaline effect. This inhibited particle hydration, leading to a decrease in the degree of hydration and, consequently, the compressive strength. The exothermic process of hydration can be divided into five main stages; quartz and calcite did not fully participate in the hydration reaction, while aluminum did. The vibrational peaks of Si-O-Ti (T = Si and Al) were present in the material. The vibrational peaks of XRD, FTIR, and SEM all indicate the presence of alumosilicate network structures in the hydration products, mainly N-A-S-H and C-A-S-H gels. Full article

(This article belongs to the Special Issue Sustainable Recycling Techniques of Pavement Materials II)

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20 pages, 3344 KiB

Open AccessArticle

Rheological Properties of Silica-Fume-Modified Bioasphalt and Road Performance of Mixtures

by Gui Hou, Yanhua Xue, Zhe Li and Weiwei Lu

Materials 2024, 17(9), 2090; https://doi.org/10.3390/ma17092090 - 29 Apr 2024

Viewed by 640

Abstract

The objective of this research is to enhance the high-temperature antirutting and antiaging characteristics of bioasphalt. In this study, silica fume (SF) was selected to modify bioasphalt. The dosage of bio-oil in bioasphalt was 5%, and the dosage of SF was 2%, 4%, 6%, 8%, and 10% of bioasphalt. The high- and low-temperature characteristics, aging resistance, and temperature sensitivity of Bio + SF were evaluated by temperature sweep (TS), the multiple stress creep recovery (MSCR) test, the bending beam rheology (BBR) test, and the viscosity test. Meanwhile, the road behavior of the Bio + SF mixture was evaluated using the rutting test, low-temperature bending beam test, freeze–thaw splitting test, and fatigue test. The experimental results showed that the dosage of SF could enhance the high-temperature rutting resistance, aging resistance, and temperature stability of bioasphalt. The higher the dosage of SF, the more significant the enhancement effect. However, incorporating SF weakened bioasphalt’s low-temperature cracking resistance properties. When the SF dosage was less than 8%, the low-temperature cracking resistance of Bio + SF was still superior to that of matrix asphalt. Compared with matrix asphalt mixtures, the dynamic stability, destructive strain, freeze–thaw splitting strength ratio, and fatigue life of 5%Bio + 8%SF mixtures increased by 38.4%, 49.1%, 5.9%, and 68.9%, respectively. This study demonstrates that the development of SF-modified bioasphalt could meet the technical requirements of highway engineering. Using SF and bio-oil could decrease the consumption of natural resources and positively reduce environmental pollution. Full article

(This article belongs to the Special Issue Sustainable Recycling Techniques of Pavement Materials II)

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16 pages, 9775 KiB

Open AccessArticle

Influence of Curing Temperature on the Performance of Calcined Coal Gangue–Limestone Blended Cements

by Wenguang Zhang, Hao Zhou, Yueyang Hu, Jiaqing Wang, Jian Ma, Ruiyu Jiang and Jinfeng Sun

Materials 2024, 17(8), 1721; https://doi.org/10.3390/ma17081721 - 9 Apr 2024

Viewed by 807

Abstract

The utilization of calcined coal gangue (CCG) and limestone for the preparation of blended cement is an efficient approach to address the issue of coal gangue disposal. However, the compressive strength development of blended cement is slow, particularly at high substitution levels of CCG. Therefore, this study aimed to promote the hydration and mechanical properties of the calcined coal gangue–limestone blended cements by increasing the curing temperature. In this study, the samples were cured at two different temperatures, namely 20 and 40 °C. The four groups of samples contained 15 wt.%, 30 wt.%, 45 wt.% and 60 wt.% cement substitutions using CCG and limestone (2:1 mass ratio). The compressive strength, hydration and microstructure were investigated at the ages of 1 to 28 d. X-ray diffraction (XRD) and thermogravimetry (TG) were used to study the hydration behavior of samples. Mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM) were used to determine the microstructure of the samples. The results indicate that an increase in curing temperature significantly promotes the compressive strength of the calcined coal gangue–limestone blended cements from 1 to 28 d. The microstructural analysis indicates that increasing the curing temperature not only promotes cement hydration but also facilitates the reaction of CCG, which precipitated more hydrates such as C-A-S-H gel, Hc and Mc. These hydrates are conducive to refining the pore structures and densifying the microstructure, which sufficiently explains the enhanced compressive strength of the calcined coal gangue–limestone blended cements. Full article

(This article belongs to the Special Issue Sustainable Recycling Techniques of Pavement Materials II)

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17 pages, 3965 KiB

Open AccessArticle

Research on the Properties of Steel Slag with Different Preparation Processes

by Xingbei Liu, Chao Zhang, Huanan Yu, Guoping Qian, Xiaoguang Zheng, Hongyu Zhou, Lizhang Huang, Feng Zhang and Yixiong Zhong

Materials 2024, 17(7), 1555; https://doi.org/10.3390/ma17071555 - 28 Mar 2024

Cited by 1 | Viewed by 1103

Abstract

To promote the resource utilization of steel slag and improve the production process of steel slag in steelmaking plants, this research studied the characteristics of three different processed steel slags from four steelmaking plants. The physical and mechanical characteristics and volume stability of steel slags were analyzed through density, water absorption, and expansion tests. The main mineral phases, morphological characteristics, and thermal stability of the original steel slag and the steel slag after the expansion test are analyzed with X-ray diffractometer (XRD), scanning electron microscope (SEM), and thermogravimetric analysis (TG) tests. The results show that the composition of steel slag produced by different processes is similar. The main active substances of other processed steel slags are dicalcium silicate (C₂S), tricalcium silicate (C₃S), CaO, and MgO. After the expansion test, the main chemical products of steel slag are CaCO₃, MgCO₃, and calcium silicate hydrate (C-S-H). Noticeable mineral crystals appeared on the surface of the steel slag after the expansion test, presenting tetrahedral or cigar-like protrusions. The drum slag had the highest density and water stability. The drum slag had the lowest porosity and the densest microstructure surface, compared with steel slags that other methods produce. The thermal stability of steel slag treated by the hot splashing method was relatively higher than that of steel slag treated by the other two methods. Full article

(This article belongs to the Special Issue Sustainable Recycling Techniques of Pavement Materials II)

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15 pages, 6051 KiB

Open AccessArticle

Strengthening Cracked Steel Plates with Shape Memory Alloy Patches: Numerical and Experimental Investigations

by Zhiqiang Wang, Libin Wang, Qiudong Wang, Bohai Ji, Jie Liu and Yue Yao

Materials 2023, 16(23), 7259; https://doi.org/10.3390/ma16237259 - 21 Nov 2023

Viewed by 834

Abstract

To investigate the retarding effect of bonding the shape memory alloy (SMA) patches on crack propagation in steel plates, both numerical and experimental analyses were conducted in the present study. A compact tension (CT) model was developed to clarify the feasibility of bonding the SMA patch to the reinforcement of the mode Ⅰ, mode Ⅱ, and mode Ⅲ cracks. On this basis, parametric analysis was conducted to investigate the strengthening parameters, i.e., the bonding area, the thickness, and the strengthening angle of the SMA patch. Subsequently, fatigue tests on the unreinforced steel plate and cracked steel plate strengthened by the SMA patches were conducted. The monitored stress variation, crack propagation behavior, and fatigue fracture surfaces were analyzed. Findings are meaningful to the application of the SMA reinforcement method in practical engineering. Full article

(This article belongs to the Special Issue Sustainable Recycling Techniques of Pavement Materials II)

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14 pages, 4186 KiB

Open AccessArticle

The Mechanical Properties and Water-Reducing and Retarding Mechanism of a Xylonic Cement Admixture

by Feng Han, Kaijian Huang, Yang Wei, Jian Han and Yong Xu

Materials 2023, 16(22), 7096; https://doi.org/10.3390/ma16227096 - 9 Nov 2023

Cited by 2 | Viewed by 1116

Abstract

This study explores the mechanical properties, as well as the water-reducing and setting delay mechanism, of a novel xylonic acid-based water reducer applied to cementitious materials. Four xylonic acid water reducers were synthesized in this study: XACa (PX) from pure xylose, XACa (HS) from hemicellulose hydrolysate, XANa (PX) from pure xylose, and XANa (HS) from hemicellulose hydrolysate. These were generated through the whole-cell catalysis of Gluconobacter oxydans bacteria, using pure xylose and hemicellulose hydrolysate as substrates. The findings indicate that the xylonic acid-based water reducer can attain a water-reducing capability between 14% and 16% when the dosage (expressed as a mass fraction of cement) is roughly 0.2%. In initial and final setting tests, XACa (PX) demonstrated a pronounced retarding influence at admixture levels below 0.15%, reaching its apex at 0.10%. This delayed the initial setting time by 76% and the final setting time by 136% relative to the control group. However, a slight pro-setting effect was noted beyond a 0.2% dosage. In the compressive and flexural tests of concrete, under the same slump, the XA group improved its mechanical properties by 5% to 10% compared to the SodiuM lignosulfonate (SL) group. In the air content and chloride ion migration resistance tests, the XA group reduced the air content by 38% compared to the SL group, but also increased the data of rapid chloride migration (D_RCM) by 16%. Characterization studies revealed that the carboxyl and hydroxyl groups in xylonic acid undergo chemisorption with the Si-O bonds on the surface of cement particles. These groups interact with the Si-O bonds on cement particles, contributing to water-reducing effects and delaying the setting process by impeding Ca²⁺ ion aggregation in the calcium-silicate-hydrate gel. Its significant water-reducing effect, adjustable setting time, and excellent mechanical and durability properties suggest its viability as an alternative to lignosulfonate series water-reducing agents. Full article

(This article belongs to the Special Issue Sustainable Recycling Techniques of Pavement Materials II)

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13 pages, 5836 KiB

Open AccessArticle

Repairing Behaviors of Cracked Steel Plates Based on Bolted Fiber-Reinforced Polymer Plates

by Jie Liu, Haobo Wang, Yang Wei, Daguang Han and Yunfei Xiang

Materials 2023, 16(20), 6773; https://doi.org/10.3390/ma16206773 - 19 Oct 2023

Viewed by 973

Abstract

The use of FRP materials to repair cracked/damaged steel structures has gradually been adopted by researchers. This paper investigates the repairing effect of bolted FRP plates for cracked steel plates based on experimental and numerical simulation methods. In the experimental investigation, the tensile strengths of six specimens, including three repaired specimens and three pure cracked steel specimens, were evaluated. The test outcomes indicated that the bolt repairing method significantly enhanced the tensile strengths of the cracked steel plates. As an example, the failure of a pure steel plate with a 1 mm width crack occurred at 813 N, whereas after being repaired, a tensile strength of 1298 N was observed. Based on finite element (FE) analysis, the influence of bolt preloads and interfacial friction coefficients were verified. The stress-relative ratio for specimens was contingent on the bolt preload magnitude and gradually decreased as the preload was augmented. By exploring the repairing effect for varied friction coefficients, it was concluded that using a higher bolt preload can aid in eliminating the performance discrepancy of the overall component caused by interface treatment errors. Full article

(This article belongs to the Special Issue Sustainable Recycling Techniques of Pavement Materials II)

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11 pages, 3118 KiB

Open AccessArticle

Effective Notch-Stress-Based Stress Concentration Factors of the Rib–Deck Weld in Orthotropic Steel Decks Considering the Effect of Asphalt Surfacing

by Qiudong Wang, Shanchun Shi, Yue Yao, Zhiqiang Wang and Zhongqiu Fu

Materials 2023, 16(20), 6760; https://doi.org/10.3390/ma16206760 - 19 Oct 2023

Cited by 2 | Viewed by 944

Abstract

Effective notch stress (ENS) approaches have many application prospects in fatigue damage assessments; however, an ENS can only be obtained by conducting complex and time-consuming numerical analyses, deterring many engineers from applying such an approach. In terms of the rib–deck weld in orthotropic steel decks (OSDs), predictive formulae for determining the ENS concentration factors (ENS-based SCFs) have been proposed; however, the effect of asphalt surfacing is not involved, which limits their applications in practical engineering. In the present study, refined finite element (FE) models, including asphalt surfacing, were developed to obtain the ENS-based SCFs which could be applied to practical engineering. Parametric analyses were conducted to investigate the effect of the transverse loading position, the combined effect of the transverse loading position and asphalt surfacing, and the effect of the temperature of the asphalt surfacing. The amplification coefficients (k_SCF, k_SCF₁, and k_SCF₂) were introduced to determine the ENS-based SCFs on the basis of the predictive formulae without considering the effect of asphalt surfacing. Results show that the ENS-based SCFs of the rib–deck weld is considerably affected by the transverse position of wheel loading and the asphalt surfacing. The cubic polynomial function could be employed to fit the numerical results of the ENS-based SCFs and amplification coefficients (k_SCF, k_SCF₁, and k_SCF₂) with high fitting precision. Predictive formulae for determining the ENS-based SCFs corresponding to arbitrary transverse loading position and temperature of asphalt surfacing are proposed. The validation investigation turns out that the relative error of the proposed formulae is within 10%, indicating the feasibility of using this approach for engineering applications. Full article

(This article belongs to the Special Issue Sustainable Recycling Techniques of Pavement Materials II)

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18 pages, 2055 KiB

Open AccessArticle

Adhesion Properties of Recycled High-Viscosity Asphalt–Aggregate Interface under Dynamic Water Erosion

by Kang Zhao, Shijie Song, Yang Wei, Guofen Li and Feng Guo

Materials 2023, 16(18), 6203; https://doi.org/10.3390/ma16186203 - 14 Sep 2023

Cited by 4 | Viewed by 971

Abstract

The drainage of asphalt pavement requires the use of a large amount of high-viscosity-modified asphalt, which faces the service environment under dynamic water erosion. The feasibility of recycling high-viscosity-modified asphalt should be investigated to facilitate sustainable infrastructure construction. This study used ultrasonic equipment to simulate dynamic water erosion test conditions and tested the adhesion performance of different types of recycled high-viscosity asphalt at various environmental temperatures. The adhesion energy index and microstructure of recycled high-viscosity asphalt were analyzed using the contact angle test and AFM test. The results demonstrate that the higher the environmental temperature, the worse the anti-stripping performance of recycled high-viscosity asphalt. From the perspective of adhesion performance indicators, a 6% recycling agent dosage is more conducive to restoring the performance of aged high-viscosity -modified asphalt. The AFM test showed that the microstructure of high-viscosity -modified asphalt represented significant changes with an increase in the recycling agent content, and the change in the adhesion force of recycled high-viscosity -modified asphalt was consistent with the results of macroscopic adhesion performance tests. This study illustrates the applicability of implementing regeneration technology for the recycling of aged drainage asphalt pavement. Full article

(This article belongs to the Special Issue Sustainable Recycling Techniques of Pavement Materials II)

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