Amjad H. Albayati
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View article: High-Temperature Properties of Hot Mix Asphalt Modified with Different Nanomaterials
High-Temperature Properties of Hot Mix Asphalt Modified with Different Nanomaterials Open
Rutting is a predominant distress in asphalt pavements, particularly in hot climatic regions. This study systematically investigated the high-temperature performance of hot mix asphalt modified with five nanomaterials, namely, nano-silica …
View article: Titanium Dioxide for Improved Performance of Reclaimed Asphalt Pavement Aggregates in Concrete
Titanium Dioxide for Improved Performance of Reclaimed Asphalt Pavement Aggregates in Concrete Open
This work presents an innovative approach to enhancing the performance of concrete with reclaimed asphalt pavement (RAP) aggregates using titanium dioxide (TiO2) nanoparticles. Traditional limestone coarse aggregates were partially replace…
View article: Influence of Coarse Aggregate Geometry and Mineral Composition on the Durability of Asphalt Concrete
Influence of Coarse Aggregate Geometry and Mineral Composition on the Durability of Asphalt Concrete Open
The durability of asphalt concrete is highly dependent on the geometry and mineralogy of coarse aggregates, yet their combined influence on mechanical and moisture resistance properties is still not fully understood. This study evaluates t…
View article: Molasses-Modified Mortars: A Sustainable Approach to Improve Cement Mortar Performance
Molasses-Modified Mortars: A Sustainable Approach to Improve Cement Mortar Performance Open
The utilization of sugarcane molasses (SCM), a byproduct of sugar refining, offers a promising bio-based alternative to conventional chemical admixtures in cementitious systems. This study investigates the effects of SCM at five dosage lev…
View article: The Influence of Nanomaterials on the Permanent Deformation of Hot Mix Asphalt
The Influence of Nanomaterials on the Permanent Deformation of Hot Mix Asphalt Open
Improving the permanent deformation resistance of asphalt pavements is a vital challenge. Nanomaterials have emerged as promising additives due to their ability to enhance the binder stiffness and elasticity. This study evaluated the influ…
View article: Linking the Fatigue Resistance of Nano-Modified Binders to Mixture Cracking
Linking the Fatigue Resistance of Nano-Modified Binders to Mixture Cracking Open
This study examined the correlation between binder-level fatigue properties and mixture-level cracking resistance in asphalt binders modified with five Nanomaterials (NMs): Nano-Silica (NS), Nano-Alumina (NA), and Nano-Titanium dioxide (NT…
View article: Investigating Fiber Reinforcement Effects on the Performance of Concrete Pavements under Repeated Load
Investigating Fiber Reinforcement Effects on the Performance of Concrete Pavements under Repeated Load Open
Concrete pavements are essential to modern infrastructure, but their low tensile and flexural strengths can cause cracking and shrinkage. This study evaluates fiber reinforcement with steel and carbon fibers in various combinations to impr…
View article: Effect of Adding Steel and Glass Fibers on the Mechanical Properties and the Thickness of Rigid Concrete Pavements
Effect of Adding Steel and Glass Fibers on the Mechanical Properties and the Thickness of Rigid Concrete Pavements Open
A road network uses rigid pavement for various purposes, still, it can face several challenges, including cracking from temperature changes, shrinkage, load stress application, brittleness, and flexural and tensile weakness. The thickness …
View article: On the effectiveness of shear reinforcement type in <scp>GFRP</scp> ‐reinforced concrete beams: Experimental study
On the effectiveness of shear reinforcement type in <span>GFRP</span> ‐reinforced concrete beams: Experimental study Open
This study investigated the shear performance of concrete beams with GFRP stirrups vs. traditional steel stirrups. Longitudinal glass fiber‐reinforced polymer (GFRP) bars were used to doubly reinforce the tested beams at both the top and b…
View article: Advancing asphalt binder performance through nanomaterial and polymer modification: Experimental and statistical insights
Advancing asphalt binder performance through nanomaterial and polymer modification: Experimental and statistical insights Open
The rapid increase in vehicle numbers, traffic speed, and axle loads has considerably shortened pavement lifespan and escalated maintenance costs. To address these challenges, modifying asphalt binders with nanomaterials and polymers has b…
View article: Utilizing Soft Computing Techniques to Estimate the Axial Permanent Deformation of Asphalt Concrete
Utilizing Soft Computing Techniques to Estimate the Axial Permanent Deformation of Asphalt Concrete Open
Rutting is a crucial concern impacting asphalt concrete pavements’ stability and long-term performance, negatively affecting vehicle drivers’ comfort and safety. This research aims to evaluate the permanent deformation of pavement under di…
View article: Effects of Polyphosphoric Acid on Physical, Rheological, and Chemical Properties of Styrene-Butadiene-Styrene (SBS)-Modified Asphalt Binder
Effects of Polyphosphoric Acid on Physical, Rheological, and Chemical Properties of Styrene-Butadiene-Styrene (SBS)-Modified Asphalt Binder Open
High temperatures combined with heavy traffic load necessitate asphalt binder modification to enhance its performance and durability. This research examines the effects of polyphosphoric acid (PPA) on the physical, rheological, and chemica…
View article: Improving asphalt concrete durability through soda lignin powder
Improving asphalt concrete durability through soda lignin powder Open
Lignin has emerged as a promising asphalt binder modifier due to its sustainable and renewable nature, with the potential to improve flexible pavement performance. This study investigates the use of Soda Lignin Powder (SLP), derived from P…
View article: Effect of Filler Types on Moisture Damage of Asphalt Mixtures
Effect of Filler Types on Moisture Damage of Asphalt Mixtures Open
The filler in the asphalt mixture is essential since it plays a significant role in toughening and stiffening the asphalt. Changes in filler type can lead the asphalt mixtures to perform satisfactorily during their design life or degrade r…
View article: Performance Assessment of Eco-Friendly Asphalt Binders Using Natural Asphalt and Waste Engine Oil
Performance Assessment of Eco-Friendly Asphalt Binders Using Natural Asphalt and Waste Engine Oil Open
The depletion of petroleum reserves and increasing environmental concerns have driven the development of eco-friendly asphalt binders. This research investigates the performance of natural asphalt (NA) modified with waste engine oil (WEO) …
View article: The Feasibility of Using Lignin as Modifier for Asphalt Cement
The Feasibility of Using Lignin as Modifier for Asphalt Cement Open
Modifying asphalt cement is an effective approach to enhance the performance of asphalt concrete. This study evaluates the physical properties of lignin-modified asphalt (LMA) at various lignin percentages. The initial step involved extrac…
View article: Nanomaterials in asphalt cement: Exploring their single and combined effects on the physical and rheological properties
Nanomaterials in asphalt cement: Exploring their single and combined effects on the physical and rheological properties Open
Pavement deterioration due to rutting, fatigue, and thermal cracking poses significant challenges to road infrastructure. Traditional asphalt modifiers often fall short in addressing these issues, leading to growing interest in advanced ma…
View article: Enhancing Moisture Damage Resistance in Asphalt Concrete: The Role of Mix Variables, Hydrated Lime and Nanomaterials
Enhancing Moisture Damage Resistance in Asphalt Concrete: The Role of Mix Variables, Hydrated Lime and Nanomaterials Open
Moisture-induced damage is a serious problem that severely impairs asphaltic pavement and affects road serviceability. This study examined numerous variables in asphalt concrete mixtures to assess their impact on moisture damage resistance…
View article: Incorporating Recycled Crumb Rubber into Asphalt: A Comprehensive Review
Incorporating Recycled Crumb Rubber into Asphalt: A Comprehensive Review Open
Using asphalt mixtures with added materials became a significant field for enhancing asphalt properties. Crumb rubber or recycled tire rubber is one of these materials that gained great attention because it provides asphalt mixtures with e…
View article: Experimental Study to Investigate the Performance-Related Properties of Modified Asphalt Concrete Using Nanomaterials Al2O3, SiO2, and TiO2
Experimental Study to Investigate the Performance-Related Properties of Modified Asphalt Concrete Using Nanomaterials Al2O3, SiO2, and TiO2 Open
The dual nature of asphalt binder necessitates improvements to mitigate rutting and fatigue since it performs as an elastic material under the regime of rapid loading or cold temperatures and as a viscous fluid at elevated temperatures. Th…
View article: Nano-Additives in Asphalt Binder: Bridging the Gap between Traditional Materials and Modern Requirements
Nano-Additives in Asphalt Binder: Bridging the Gap between Traditional Materials and Modern Requirements Open
This research delves into the realm of asphalt technology, exploring the potential of nano-additives to enhance traditional asphalt binder properties. Focusing on Nano-Titanium Dioxide (NT), Nano-Aluminum Oxide (NA), and Nano-Silica Oxide …
View article: THE TRANSITION TO A PG GRADING SYSTEM FOR ASPHALT CEMENT IN IRAQ
THE TRANSITION TO A PG GRADING SYSTEM FOR ASPHALT CEMENT IN IRAQ Open
In Iraq, as well as many other developing countries the performance graded (PG) based System is not yet implemented to evaluate the currently used asphalt cernents for paving works. It appears that not only the unavailability of test equip…
View article: Uni- and tri-axial tests and property characterization for thermomechanical effect on hydrated lime modified asphalt concrete
Uni- and tri-axial tests and property characterization for thermomechanical effect on hydrated lime modified asphalt concrete Open
Permanent deformation, fatigue and thermal cracking are the three typical distresses of flexible pavement. Using hydrated lime (HL) into the conventional limestone mineral additive has been widely practiced, including in Europe, to improve…
View article: Review of: "A Review of the Processes and Procedures of Road Traffic Accident Mortality Data Collection in Zambia"
Review of: "A Review of the Processes and Procedures of Road Traffic Accident Mortality Data Collection in Zambia" Open
Potential competing interests: No potential competing interests to
View article: Enhancing Asphalt Performance and Its Long-Term Sustainability with Nano Calcium Carbonate and Nano Hydrated Lime
Enhancing Asphalt Performance and Its Long-Term Sustainability with Nano Calcium Carbonate and Nano Hydrated Lime Open
Nanomaterials enhance the performance of both asphalt binders and asphalt mixtures. They also improve asphalt durability, which reduces resource consumption and environmental impact in the long term associated with the production and trans…
View article: Mitigating Reflection Cracking in Asphalt Concrete Overlays with ECC and Geotextile
Mitigating Reflection Cracking in Asphalt Concrete Overlays with ECC and Geotextile Open
The rehabilitation of deteriorated pavements using Asphalt Concrete (AC) overlays consistently confronts the reflection cracking challenge, where inherent cracks and joints from an existing pavement layer are mirrored in the new overlay. T…
View article: Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture
Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture Open
For over a century, the global consumption of asphalt binder in asphalt mixture production has been substantial. In the Heet region (west of Iraq), two distinct forms of natural asphalt (NA) deposits exist: rock asphalt and sulfur spring a…