Performance Engineering Research Articles

Polyurethane modified asphalt mixture incorporating waste glass with a wide particle size range: Preparation and performance evaluation

Increasing the utilisation rate of waste glass in asphalt mixtures, especially that with a wide range of particle sizes, is of great importance to resource recycling, while it may bring drawbacks to the engineering performance of asphalt mixtures. Incorporating polyurethane (PU) as a modifier can enhance asphalt mixture's performance, but there is limited research considering the usage of waste glass as aggregates. In this study, PU modified asphalt mixtures were prepared, incorporating waste glass particles ranging in size from 2.36 mm to 9.5 mm as a portion of the aggregates. Optimal preparation methods and mix designs for the PU-modified asphalt binder were determined through a series of tests designed based on Orthogonal method. The performances of the PU-modified asphalt binders were then evaluated to guide the selection of the optimal preparation method and mix design. PU-modified waste glass asphalt mixtures were then prepared and their engineering performances were assessed at various glass-to-aggregate ratios. The results show that scheme PU-1 with a shearing temperature of 140°C, a shearing time of 10 min, a PU content of 10% and a compatibiliser content of 2% is suggested for preparing the PU-modified asphalt binder, which shows the best performances due to superior chemical modification and compatibility. Higher glass content decreases the high/low-temperature performance, but it can be improved by adding silane coupling agent or hydrated lime, with the latter showing better results. The incorporation of glass particles has little impact on anti-sliding performance, and asphalt mixtures maintain excellent anti-sliding properties up to a 20% replacement rate. Overall, the performance of the asphalt with waste glass up to 15% can meet the specification requirements. This novel approach offers a potential solution to enhance the incorporation of waste materials in asphalt construction, contributing to sustainable and environmentally-friendly road construction.

Transformative innovations in nano-biochar-enhanced porous concrete: Elevating engineering performance and pollutant removal

This study addresses a significant gap in research by exploring the integration of nano-biochar (NBC) into porous concrete (PC) to enhance water purification capabilities while also evaluating its impact on the material's physical and mechanical properties. NBC was added in varying weights (0%–100%) to the binder material. Notably, beyond 10% NBC content, there was a significant reduction (p < 0.05) in porosity and compressive strength. Microstructural analyses using SEM, XRD, and FTIR revealed the incorporation of C–S–H within NBC pore structures. At 50% NBC content, substantial removal efficiencies (p < 0.05) were observed for manganese (Mn), nitrate (NO3−), total phosphorus (TP), and atrazine (AZ), reaching values of 97.4%, 93.9%, 97.3%, and 52.9%, respectively. Linear regression models revealed significant relationships between the degree of NBC enhancement and the efficiency of Mn and AZ removal. The logarithmic function provided the most accurate predictions for the quantity of NO3− and TP adsorbed by PC. These findings demonstrated that NBC-enhanced PC offers improved environmental remediation and provides guidelines for optimizing its composition for specific pollutants. Balancing mechanical and environmental performance, highlighting its potential as a sustainable construction material that meets both structural and pollution control needs is recommended.

Mechanical and Physiochemical Characteristics of Sandcrete Blocks Produced with Sustainable Biomaterials

The quest for sustainable construction materials is rapidly increasing; due to health hazards associated the traditional construction items. This research goal is to investigate how sugarcane bagasse ash (SBA), crushed periwinkle shells (CPS) and cassava starch (CS) incursion affects the engineering performance of sandcrete blocks, and the physiochemical qualities of their leachate. SBA was incorporated at a rate of 5, 10, 15 and 20% as substitution for cement; treated CPS (TCPS) and untreated CPS (UCPS) were add at a rate of 10, 15, 20 and 25% as partial replacement for sand; while 1% CS was added as integrity enhancer. A consistent cement–sand mix ratio of 1:8 and corresponding water–cement (w/c) ratio of 0.55 were employed across all 17 experimental units; and the blocks were cured using the irrigation technique. Likewise, the blocks were subjected to leaching condition (immersion in water) to collect their leachate. Chemical compositions of the SBA, sand, cement, CS and TCPS and UCPS were examined using the x–ray fluorescent technique, while the mechanical and physiochemical parameters of the blocks were studied in harmony with the American Society for Testing and Materials standards. The results obtained revealed that the mechanical and physiochemical qualities of the blocks were dependent on the volume of the bio–materials incorporated into the sandcrete. Furthermore, the findings showed that an environmentally friendly high–strength lightweight sandcrete blocks, meeting international requirement of 3.45 N/mm2 can be produced by incorporating 10% SBA, 15% TCPS and 1% CS into the sandcrete block. The research highlights the possibility of using agricultural waste materials in achieving sustainable materials for the housing industry.

A geophysical assessment for engineering performance of subgrade soils: a case study of the Ago-Iwoye/Ilishan road, South-Western Nigeria

Geophysical application of electrical resistivity method has been employed to differentiate subsurface target of interest from the encompassing strata along the Ago-Iwoye/Ilishan road in South-western Nigeria. However, a geological model which links variation in lithological characteristics of subgrade soils to the engineering performance of the road is yet to be a research subject. This research is a special geotechnical application of geophysics for revealing the subsurface disposition and predicting the stability state of subgrade materials. Field assessment of rock types, and their relationship was followed by electrical resistivity measurement along the road. Schlumberger and dipole – dipole arrays were adopted for fifty-eight (58) Vertical Electrical Sounding (VES) and 2-D resistivity imaging involving Dipole-Dipole profiling technique was adopted in the sedimentary segment. Field data were inverted to 2-D resistivity structures inferentially delineated contour colorations using ‘DIPRO for Windows’ software. Geo-electric layers revealed Sedimentary Basin (SB) between Ilishan and Irolu, between Irolu and Ijesha-Ijebu, Transitional Zone (TR) with abrupt contrast along the plane of an unconformity and crystalline Basement Complex (BC) towards Ago-Iwoye. The 2-D resistivity structures across the different geological terrains revealed with 50Ωm - 3289Ωm at SB,233Ωm - 8028Ωm at TZ and 8Ωm - 3009Ωm at BC. From geotechnical view, subgrade materials underlying the SB and TZ segments can be adjudged competent to sand and clayey sand units with minor occurrences of incompetent clay and sandy clay lenses. The occurrence of subsurface discontinuities at the BC end of TZof the road would adversely affect the pavement stability.

Utilization of steel slag as coarse aggregate and filler in stone mastic asphalt (SMA) mixture: Engineering performance, environmental impact and economic benefits analysis

The unquantified environmental impact and economic benefits of steel slag based asphalt mixture, as well as the difficulty in directly utilizing steel slag fine aggregate (SSFA) due to solidification, limit the utilization of steel slag in asphalt mixture. This research proposed an innovative method of using steel slag coarse aggregate (SSCA) and steel slag powder (SSP) filler prepared by grinding solidified SSFA to replace ordinary natural resources to prepare stone mastic asphalt (SMA) mixture. The feasibility of the proposed utilization method of steel slag was determined based on the analysis results of main engineering performance, environmental impact and economic benefits of steel slag SMA mixture (SSSM). The ordinary SMA mixture (OSM) was functioned as a control group. The investigated main engineering performance included fatigue performance, moisture stability, high-temperature deformation resistance and low-temperature crack resistance. Environmental impact was evaluated based on the life cycle assessment (LCA) method, and the relationship between the transportation distance of steel slag, common basalt and the emission characteristics was deeply analyzed. In addition, economic benefits were determined based on the cost calculation results. Results showed that SSSM was superior to OSM in terms of these main engineering performance. The emissions from SMA mixtures increased with the extension of transportation distance of steel slag or basalt. From the perspective of reducing emissions, choosing steel slag aggregate had advantages when the transportation distance was less than 365 km, otherwise, it was recommended to choose basalt. Under three different transportation distances (short, medium and long distance transportation), the introduction of steel slag in SMA mixture reduced the greenhouse gas emissions by 1.1%–8.6%, of which the raw material production stage contributed the most. Furthermore, SSSM exhibited higher economic benefits, with a functional unit of SSSM pavement saving the cost by 14.4%–19.8%. Therefore, using steel slag as a substitute for coarse aggregate and filler in SMA mixture can promote the reuse of solidified SSFA, reduce the environmental impact and total cost of all stages of constructing SMA pavement.

Connectivity patterns in lead-free piezocomposites: A critical analysis for 0-3 and 1-3 configurations

In the quest for eco-friendly alternatives within materials science, the development of sustainable and non-toxic piezoelectric composites is of utmost importance. This study undertakes a computational exploration to elucidate the influence of phase connectivity on the engineering performance of lead-free piezocomposites. Employing a combination of analytical and numerical methodologies, we critically evaluated various figures of merit across different microstructural configurations, juxtaposing these findings with traditional lead zirconate titanate (PZT)-based materials. Our analysis considers 0-3 and 1-3 connectivity patterns, incorporating active phases in the form of spherical particles and cylindrical fibers. We also examine the impact of carbon nanotubes (CNTs) in enhancing the polymeric matrix, which introduces the potential for network percolation and further mechanical and electrical property optimization. The study yields pivotal insights into the phase connectivity of lead-free piezocomposites, with direct implications for their application in sensing, actuating, and energy harvesting domains. We ascertain that the electromechanical performance of these composites is contingent upon the connectivity pattern and the proportion of active phase. Notably, the KNNS-BNZH & Polyethylene composite demonstrates exceptional potential in 1-3 configurations, while the BTO & PVDF composite distinguishes itself with superior dielectric and piezoelectric responses across varying volume fractions. The strategic infusion of CNTs into the PDMS matrix emerges as a significant enhancer of electromechanical attributes, albeit with performance improvements that are specific to the type of coefficient and CNT concentration. This investigation underscores the nuanced interplay between composite design and microstructural attributes, reinforcing the critical role these factors play in the advancement of effective and eco-conscious piezoelectric materials.

Utilization of high fine-grained shield tunnel spoil in CLSM and effect of foam agent content on properties

The volume of shield tunnel spoil (STS) is very large, its effective management is difficult, and it even causes environmental pollution. In this study, to achieve its recycling, a novel controlled low strength material (CLSM) was prepared by utilizing high fine-grained STS as partial aggregates instead of sand, and its engineering performance was thoroughly evaluated. In the process of mix proportion design, key parameters such as the STS-to-total aggregate ratio (TS/TA), foam agent content (F), water-to-binder ratio (W/B), binder-to-total aggregate ratio (B/TA), and fly ash-to-cement ratio (FA/C) were employed. Workability aspects (i.e., flowability, bleeding rate, and setting time) and physical and mechanical properties (i.e., unconfined compressive strength and density) were evaluated. Additionally, the pH of bleeding and leachate, as well as the impact of foam agent content on CLSM properties, were examined. The findings revealed that an increase in the TS/TA ratio was associated with a decrease in flowability, density, and compressive strength, as well as an extension in setting time. The CLSM, with a flowability range of 150–300 mm, exhibited a bleeding rate below 2%, setting times between 3.6 and 6.1 hours, 28-day strength ranging from 1.06 to 3.24 MPa, and fresh density ranging from 1810 to 2060 kg/m³. Generally, these results met the required specifications, although the fresh density was slightly lower. The pH results indicated that the CLSM is non-corrosive. Furthermore, our investigation highlighted the substantial influence of foam agent content on flowability and setting time. An increase of 0.1‰ in the proportion of foam agent within the total aggregates resulted in a flowability increase of 2.1–2.6 mm and a setting time increase of 4.25–4.99 minutes. Therefore, it is feasible to utilize high fine-grained STS in the production of CLSM.

Strategic Team Management for Improved Engineering Performance: A Collaborative Perspective

This study examines the influence of team characteristics (such as team efficacy) and environmental factors (such as emotional intelligence climate) on engineering team performance based on social cognitive theory (SCT). Data were collected through 157 questionnaires from engineering employees of a manufacturing company in Indonesia using random sampling method. Data analysis was conducted using SEM method with SmartPLS 4.0 software. The proposed model shows that work team planning acts as a mediator between team efficacy, emotional intelligence climate, and team performance. The findings provide an in-depth understanding of the factors that influence team performance in the context of the manufacturing industry. The results suggest that work team planning plays an important role in improving team performance through the effects of team efficacy and emotional intelligence climate. The practical implication of this study is the importance of company management to pay attention to both antecedents of team performance, both in terms of personal (efficacy) and environmental (emotional intelligence climate) in an effort to improve engineering team performance in a sustainable manner.

Enhanced hydrogen evolution and tetracycline degradation by a Z-scheme g-C3N4 nanosheets loaded CeO2 photocatalyst under visible light irradiation

In the quest to enhance photocatalytic performance, structural regulation and interface engineering stand out as effective strategies for amplifying active sites and fostering the separation of photogenerated electron-hole pairs. In this study, a pioneering approach was employed, utilizing a straightforward two-step calcination method to prepare a novel photocatalyst: porous graphite carbon nitride (g-C3N4, CN) nanosheets (NS) loaded with mesoporous cerium oxide (CeO2/CNNS). The distinctive architecture of CeO2/CNNS not only elevates the specific surface area and catalytic active sites but also facilitates efficient mass transfer. Experimental results and density functional theory (DFT) calculations corroborate the existence of an internal electric field (IEF) within the Z-scheme heterojunction formed by uniformly dispersed CeO2 and CNNS. This IEF proves pivotal in promoting charge separation and migration, thereby maintaining robust redox capabilities. Under visible light irradiation, CeO2/CNNS demonstrates an impressive 4.2-fold increase in the hydrogen production rate compared to bulk g-C3N4 (BCN), coupled with a 48.5% boost in the photocatalytic degradation rate constant (k) of tetracycline (TC). This study not only unveils the innovative design of CeO2/CNNS but also paves the way for a fresh perspective on the design and preparation of multifunctional photocatalysts.

Employee Performance Engineering Based on Organizational Culture, Compensation and Motivation

Employee performance is determined, among other things, by organizational culture, compensation and motivation. This research aims to examine the influence of organizational culture, compensation and motivation simultaneously or partially on employee performance at the regional public water company, Mojopahit Mojokerto, East Java, Indonesia. The research population was 124 employees of the Mojopahit Drinking Water Regional Public Company in Mojokerto. Meanwhile, 45 people were selected as research samples. Meanwhile, the sampling technique uses simple random sampling. Data collection uses a questionnaire that is distributed directly to respondents. The analysis tool uses multiple linear regression. Hypothesis testing uses the F test to prove the simultaneous influence of the independent variable on the dependent variable and the t test to prove the partial influence of the independent variable on the dependent variable. The research results concluded that organizational culture, compensation and motivation simultaneously or partially affect employee performance, but organizational culture variables have a stronger influence on employee performance than compensation and motivation variables.

A Comprehensive Performance Evaluation of GGBS-Based Geopolymer Concrete Activated by a Rice Husk Ash-Synthesised Sodium Silicate Solution and Sodium Hydroxide

Commercial sodium hydroxide (NaOH) and sodium silicate (SS) are commonly used as alkaline activators in geopolymer concrete production despite concerns about their availability and associated CO2 emissions. This study employs an alternative alkaline activator (AA) synthesized from a sodium silicate alternative (SSA) solution derived from rice husk ash (RHA) and a 10 M sodium hydroxide solution. The initial phase established an optimal water-to-binder (W/B) ratio of 0.50, balancing workability and structural performance. Subsequent investigations explored the influence of the alkali/precursor (A/P) ratio on geopolymer concrete properties. A control mix uses ordinary Portland cement (OPC), while ground granulated blast-furnace slag (GGBS)-based geopolymer concrete—GPC mixes (GPC1, GPC2, GPC3, GPC4) vary the A/P ratios (0.2, 0.4, 0.6, 0.8) with a 1:1 ratio of sodium silicate to sodium hydroxide (SS: SH). The engineering performance was evaluated through a slump test, and unconfined compressive strength (UCS) and tensile splitting (TS) tests in accordance with the appropriate standards. The geopolymer mixes, excluding GPC3, offer suitable workability; UCS and TS, though lower than the control mix, peak at an A/P ratio of 0.4. Despite lower mechanical strength than OPC, geopolymers’ environmental benefits make them a valuable alternative. GPC2, with a 0.4 A/P ratio and 0.5 W/B (water to binder) ratio, is recommended for balanced workability and structural performance. Future research should focus on enhancing the mechanical properties of geopolymer concrete for sustainable, high-performance mixtures.

Factors Affecting Bachelors of Engineering and Technology Academic Performance in Teaching English for Special Purposes: Corpus Approach and Terminological Units

Factors Affecting Bachelors of Engineering and Technology Academic Performance in Teaching English for Special Purposes: Corpus Approach and Terminological Units

Optimizing Engineered Products for Their Social Impacts on Multiple Stakeholders

Abstract Engineered products are often optimized based on engineering requirements, user requirements, cost, and performance. This strategy is well suited for most applications, but products designed specifically to improve the lives of users and communities would benefit from an approach that helps engineers optimize a product based also on its social impacts. This paper introduces several optimization problem formulations adapted from multi-stakeholder strategies in the economics and business management literature. Each optimization problem formulation optimizes a product’s social impact according to the ideology and principles inherent to the adapted multi-stakeholder strategy. A case study is presented for a cassava peeling machine that is being developed for farmers in the Brazilian Amazon. Finally, the resulting peeler design configurations and social impacts are discussed to illustrate the advantages and disadvantages of each strategy.

A Review: Soil Stabilisation Using Agricultural Waste and Cementitious Material

A Review: Soil Stabilisation Using Agricultural Waste and Cementitious Material

Evaluation of Dry Density for Black Cotton Soil Using Rice Husk Ash

Abstract: Stabilization is a broad term that refers to the various methods used to improve the engineering performance of a soil and its application in a variety of engineering works. Soil stabilisation is a major concern for civil engineers today, both for road construction and for increasing soil strength or stability, which reduces construction costs. Soil stabilisation is the chemical or physical modification of soil properties to improve the soil's engineering quality. The primary goal of soil stabilisation is to increase the soil's bearing capacity, resistance to weathering processes, and permeability. Due to the rapid growth of urbanization and industrialization, minimizing industrial waste. Because of the rapid growth of urbanization and industrialization, reducing industrial waste has become a major issue in recent years. To encounter this innovative and nontraditional research on waste utilization is becoming increasingly important. Soil improvement using waste materials such as slags, rice husk ash, and silica fume has been recommended from an environmental standpoint in geotechnical engineering. This paper examines the effects of blast furnace slag, fly ash, and micro silica added to black cotton soil to improve soil properties. In addition, this paper provides a review of the use of various solid waste materials for soft soil stabilisation. However, there are numerous methods and techniques available for stabilising these soils. This study describes how waste materials can be used to stabilise soft soil

Workability of low-density polyethylene modified asphalt mixtures: A statistical analysis of particle kinematics

The utilization of recycled plastics in asphalt pavements has gained considerable attention due to its economic, environmental, and engineering benefits. However, incorporating plastics into asphalt mixtures poses challenges to their workability, sometimes leading to a detrimental impact on engineering performance. To address this limitation, this study introduces an innovative analytical approach to examine the impact of Low-Density Polyethylene (LDPE) and its processing techniques on the workability of the asphalt mixture. A particle-size wireless sensor, SmartKli, was utilized to collect the particle kinematic behaviors during compaction. The effect of various mix designs or production methods on the mixture's workability was determined by statistically analyzing the sensing data, including Two One-Sided T-tests and one sample T-test. In this project, seven mixtures with various asphalt content, and LDPE dosage were studied. The recycled plastic-modified asphalt (RPMA) was produced using two dry processing methods and one wet processing method. The results validate the significance of asphalt content on the mixture's workability. A linear correlation was observed between the active asphalt content and the mixture's workability, even in the presence of plastics. Under the identical mix design, the wet processing method proved more effective than the dry methods in integrating LDPE, as evidenced by the workability of the RPMAs. For asphalt mixtures with plastics, ensuring sufficient binder content is essential for maintaining workability, particularly in RPMAs processed via dry methods.

Experimental Research on the Impact Resistance Mechanical Properties and Damage Mechanism of Rubberized Concrete under Freeze–Thaw Cycling

To improve the long-term performance of concrete engineering in high-altitude areas, waste tire rubber was added to a concrete mix, and freeze–thaw and impact tests were conducted. The effects of waste tire rubber with different particle sizes (10, 20, 30 mesh) and freeze–thaw cycles (0, 25, 50, 75, 100, 125) on the dynamic mechanical properties of concrete materials were studied. The stress–strain curves, peak stress, and fracture morphology of the specimens were analyzed. The microstructure changes of the specimens were also analyzed using scanning electron microscopy (SEM). The results showed the following: (1) Both macroscopic and microscopic analysis results showed that the internal damage of rubber concrete specimens was smaller after freeze–thawing, and the integrity was better after impact, maintaining a loose but not scattered state. The addition of waste tire rubber significantly improved the material’s impact resistance to a certain extent. (2) As the impact pressure increased, the strain rate of the specimens increased linearly, and the dynamic peak stress was linearly positively correlated with the strain rate. (3) After 125 freeze–thaw cycles, the peak stress of the specimens with 30-mesh added rubber decreased significantly less than that of ordinary concrete under 0.3, 0.45, and 0.6 MPa impact pressure. The dynamic peak stress was higher than that of specimens with 10-mesh and 20-mesh added rubber, and the addition of 30-mesh rubber significantly improved the frost resistance and impact resistance of concrete materials. This study can provide new ideas for the engineering application of rubber concrete.

New Coal Char-Based Building Products: Manufacturing, Engineering Performance, and Techno-Economic Analysis for the USA Market

Common building products, i.e., thin brick and stone veneer, add the look of brick walls or the enduring charm of natural stones into buildings and houses without imposing a substantial increase in structural load. This study investigates the mechanical strength, durability, and economic feasibility of producing innovative char-based thin bricks and stone veneers. The char-based thin brick vacuum treated with hydrophobic liquid exhibits water absorption rates within the 4–7% range, displays durability against 50 freeze–thaw (F-T) cycles, and maintains a saturation coefficient below 0.6. In contrast, commercial thin bricks have water absorption of 9–12%. Treated char-based stone veneer has water absorption of 5.3% and an average compressive strength of 19.2 MPa, maintains its structural integrity throughout 50 F-T cycles, and exhibits a negligible linear shrinkage of approximately 0.01%. In contrast, commercial stone veneers have water absorption of 10–16%. These engineering properties meet the criteria as per ASTM standards C1088 and C1670 for thin brick and stone veneer, respectively. A techno-economic study was preliminarily conducted to examine the potential cost efficiency and cash flow in manufacturing these char-based building products. The manufacturing cost of USD 25.83 is lower than the average market price of 64.65 USD/sq. m. for thin bricks. The manufacturing cost of USD 32.65 is lower than the average market price of 129.17 USD/sq. m. for stone veneers. These comparisons present a compelling economic advantage for their commercialization. This comprehensive study has demonstrated the advantages of sustainable char-based stone veneers and thin bricks regarding engineering performance and economic benefits.

Application of High-performance Concrete in Civil Engineering

With the continuous improvement of modern civil engineering performance requirements on building materials, high-performance concrete (High-Performance Concrete, HPC) has become one of the key materials. This paper discusses the application of HPC in various civil engineering, and its innovative impact. HPC has played a key role in many major engineering projects for its extraordinary durability, high intensity and excellent working nature. First, the paper introduces the basic composition and performance characteristics of HPC, including its compressive strength, durability and rheological properties. The optimized formulation of HPC reduces the use of cement, and cement production is one of the major sources of carbon emissions. By using fly ash, silicon ash and other industrial by-products to replace part of the cement components, HPC not only improves its environmental friendliness, but also enhances the comprehensive performance of the material. Finally, the paper prospects the potential development of HPC in future civil engineering. With technological advances and increasing demand for environmentally friendly building materials, the improvement and application of HPC will continue to expand.

Influence of Petroleum-Based and Bio-Derived Recycling Agents on High-RAP Asphalt Mixtures Performance

Reclaimed asphalt pavement (RAP) has been utilized as a potential partial substitute for virgin asphalt binder in asphalt mixtures. However, a primary concern with increasing RAP content in asphalt mixtures is the cracking potential, attributed to the aged RAP asphalt binder (RAP-binder). To address this, the use of petroleum-based and bio-derived recycling agents (RAs) in enhancing the cracking resistance of high-RAP asphalt mixtures has been explored. The objective of this study is to ascertain the effectiveness of six RAs in mitigating cracking in high-RAP asphalt mixtures. The RAs considered include petroleum-crude-oil-derived aromatic oil, soy oil, and four types of tall-oil-derived phytosterol (industrial by-product, intermediate, purified, and fatty acid-based). The RAs’ dosages were optimized, based on RAP-binder and unmodified asphalt binder properties, to produce target PG 70-22 asphalt binder when incorporated in asphalt mixtures containing 30% RAP. To assess the engineering performance of these 30%-RAP asphalt mixtures for each RA, a conventional asphalt mixture incorporating styrene-butadiene-styrene (SBS)-modified PG 70-22 asphalt binder without RAP or RAs was benchmarked for comparison. Mechanical tests performed included Hamburg wheel-track testing (HWTT), intermediate-temperature fracture tests (semi-circular bend, Illinois flexibility index, and IDEAL cracking tolerance), and thermal stress-restrained specimen tensile strength test to evaluate permanent deformation, intermediate-temperature cracking resistance, and low-temperature cracking resistance, respectively. Results showed that petroleum-crude-oil-derived aromatic oil and tall-oil-derived fatty-acid-based oil RAs were able to rejuvenate RAP-binder as measured by the cracking tests performed. Further, the use of these RAs did not adversely impact the asphalt mixtures’ permanent deformation performance.