Abdulaziz Alossta - Academia.edu (original) (raw)

Papers by Abdulaziz Alossta

Research paper thumbnail of Pavement Condition Assessment Using Pavement Condition Index and Multi-Criteria Decision-Making Model

Mechatronics and Intelligent Transportation Systems

Road maintenance is essential to the growth of the transportation infrastructure and, thereby, ha... more Road maintenance is essential to the growth of the transportation infrastructure and, thereby, has a big impact on a nation's overall economic stability and prosperity. It is impossible to simultaneously monitor and maintain the entire network. As a result, transportation authorities are eager to develop scientific foundations for assessing the importance of maintenance tasks within the network of roads. Hence, pavement assessment methods are needed to establish the priorities and achieving the most convenient level of service. In this study, a road stretch was assessed using the sixteen criteria in the Distress Identification Manual for pavement defects, using pavement condition index (PCI) and multi-criteria decision-making models (MCDM). The two methods were compared to determine the possibility of using MCDM. The study came to the conclusion that MCDM is reliable in assessing pavement performance because both methods indicated that the road pavement is deteriorating.

Research paper thumbnail of Resolving a location selection problem by means of an integrated AHP-RAFSI approach

Reports in Mechanical Engineering, 2021

The optimal Site selection operation is one of the most important challenges facing planners. Man... more The optimal Site selection operation is one of the most important challenges facing planners. Many location-allocation models have been developed based on multi-criteria decision making process. Recent methods take into account site, network, and user characteristics to determine the appropriate location. The development of optimum system has been a growing focus for most authorities across the world. It is generally thought that utlities allocation is the ultimate goal for service providers, which has been attributed to giving assistance in a time- and cost-efficient manner. In this paper, a multi-criteria decision making approach was implemented in two steps. Analytical hierarchy process (AHP) was adopted in the first step to determine the criteria weights. Results of AHP showed that response time had the highest weight among other criteria. Ranking of different alternatives was conducted in the second step using RAFSI model to choose the optimal location. Model ranking clearly in...

Research paper thumbnail of Laboratory evaluation of foaming-based and chemical-based warm mix asphalt

Innovative Infrastructure Solutions, 2017

A recent joint study by Arizona State University and the Arizona Department of Transportation (AD... more A recent joint study by Arizona State University and the Arizona Department of Transportation (ADOT) was conducted to evaluate certain warm mix asphalt (WMA) properties in the laboratory. WMA material was taken from an actual ADOT project that involved two WMA sections. The first section used a foamed-based WMA admixture, and the second section used a chemical-based WMA admixture. The rest of the project included control hot asphalt mixture. The experimental plan included three main objectives. The first objective was to explore the concept of reheating WMA by conducting the dynamic modulus |E*| at 21.1°C (70°F) and compare plant to laboratory prepared mixtures using specimens from the foaming-based mixture. The second objective was to evaluate the effect of WMA on the compaction energy. The third objective was to assess the moisture damage using the Hamburg wheel-track test and AASHTO T-283 tensile strength ratio (TSR) test. The |E*| results tested at 21.1°C for both laboratory prepared and plant foaming-based mixtures showed similar |E*| values. The statistical analysis indicated that there is no statistical significance of the dynamic moduli between the two mixtures at two compaction temperatures 132°C (270°F) and 154°C (310°F). This indicated that there is no effect of reheating on the plant produced WMA mixture. The compaction energy results supported the conclusion from the reheating study. The moisture sensitivity evaluation based on the TSR results indicated low resistance to moisture damage; while the Hamburg testing results indicated very good performance.

Research paper thumbnail of Evaluation of Warm Mix Asphalt versus Conventional Hot Mix Asphalt for Field and Laboratory-Compacted Specimens

A recent Arizona State University study was conducted to evaluate two Warm Mix Asphalt (WMA) mixt... more A recent Arizona State University study was conducted to evaluate two Warm Mix Asphalt (WMA) mixturess. The evaluation included three laboratory tests on field cores as well as lab compacted specimens from an Arizona Department of Transportation (ADOT) project that involved two WMA test sections. The first section used a foamed-based WMA admixture, while the second section used a chemical-based WMA admixture. All laboratory testing were conducted at 70 °F (21 °C) and included; the dynamic modulus (E*), indirect tensile strength (IDT) and moisture damage evaluation using AASHTO T-283 test procedure. The testing plan of the foaming-based, chemical-based, and control sections of the study included field-cored specimens as well as laboratory specimens compacted at two different temperatures 270 °F (132 °C) and 310 °F (154 °C). On the foaming section of the study, field-stacked specimens showed statistically higher dynamic modulus compared to the lab-compacted specimens, meanwhile, the l...

Research paper thumbnail of Pavement Condition Assessment Using Pavement Condition Index and Multi-Criteria Decision-Making Model

Mechatronics and Intelligent Transportation Systems

Road maintenance is essential to the growth of the transportation infrastructure and, thereby, ha... more Road maintenance is essential to the growth of the transportation infrastructure and, thereby, has a big impact on a nation's overall economic stability and prosperity. It is impossible to simultaneously monitor and maintain the entire network. As a result, transportation authorities are eager to develop scientific foundations for assessing the importance of maintenance tasks within the network of roads. Hence, pavement assessment methods are needed to establish the priorities and achieving the most convenient level of service. In this study, a road stretch was assessed using the sixteen criteria in the Distress Identification Manual for pavement defects, using pavement condition index (PCI) and multi-criteria decision-making models (MCDM). The two methods were compared to determine the possibility of using MCDM. The study came to the conclusion that MCDM is reliable in assessing pavement performance because both methods indicated that the road pavement is deteriorating.

Research paper thumbnail of Resolving a location selection problem by means of an integrated AHP-RAFSI approach

Reports in Mechanical Engineering, 2021

The optimal Site selection operation is one of the most important challenges facing planners. Man... more The optimal Site selection operation is one of the most important challenges facing planners. Many location-allocation models have been developed based on multi-criteria decision making process. Recent methods take into account site, network, and user characteristics to determine the appropriate location. The development of optimum system has been a growing focus for most authorities across the world. It is generally thought that utlities allocation is the ultimate goal for service providers, which has been attributed to giving assistance in a time- and cost-efficient manner. In this paper, a multi-criteria decision making approach was implemented in two steps. Analytical hierarchy process (AHP) was adopted in the first step to determine the criteria weights. Results of AHP showed that response time had the highest weight among other criteria. Ranking of different alternatives was conducted in the second step using RAFSI model to choose the optimal location. Model ranking clearly in...

Research paper thumbnail of Laboratory evaluation of foaming-based and chemical-based warm mix asphalt

Innovative Infrastructure Solutions, 2017

A recent joint study by Arizona State University and the Arizona Department of Transportation (AD... more A recent joint study by Arizona State University and the Arizona Department of Transportation (ADOT) was conducted to evaluate certain warm mix asphalt (WMA) properties in the laboratory. WMA material was taken from an actual ADOT project that involved two WMA sections. The first section used a foamed-based WMA admixture, and the second section used a chemical-based WMA admixture. The rest of the project included control hot asphalt mixture. The experimental plan included three main objectives. The first objective was to explore the concept of reheating WMA by conducting the dynamic modulus |E*| at 21.1°C (70°F) and compare plant to laboratory prepared mixtures using specimens from the foaming-based mixture. The second objective was to evaluate the effect of WMA on the compaction energy. The third objective was to assess the moisture damage using the Hamburg wheel-track test and AASHTO T-283 tensile strength ratio (TSR) test. The |E*| results tested at 21.1°C for both laboratory prepared and plant foaming-based mixtures showed similar |E*| values. The statistical analysis indicated that there is no statistical significance of the dynamic moduli between the two mixtures at two compaction temperatures 132°C (270°F) and 154°C (310°F). This indicated that there is no effect of reheating on the plant produced WMA mixture. The compaction energy results supported the conclusion from the reheating study. The moisture sensitivity evaluation based on the TSR results indicated low resistance to moisture damage; while the Hamburg testing results indicated very good performance.

Research paper thumbnail of Evaluation of Warm Mix Asphalt versus Conventional Hot Mix Asphalt for Field and Laboratory-Compacted Specimens

A recent Arizona State University study was conducted to evaluate two Warm Mix Asphalt (WMA) mixt... more A recent Arizona State University study was conducted to evaluate two Warm Mix Asphalt (WMA) mixturess. The evaluation included three laboratory tests on field cores as well as lab compacted specimens from an Arizona Department of Transportation (ADOT) project that involved two WMA test sections. The first section used a foamed-based WMA admixture, while the second section used a chemical-based WMA admixture. All laboratory testing were conducted at 70 °F (21 °C) and included; the dynamic modulus (E*), indirect tensile strength (IDT) and moisture damage evaluation using AASHTO T-283 test procedure. The testing plan of the foaming-based, chemical-based, and control sections of the study included field-cored specimens as well as laboratory specimens compacted at two different temperatures 270 °F (132 °C) and 310 °F (154 °C). On the foaming section of the study, field-stacked specimens showed statistically higher dynamic modulus compared to the lab-compacted specimens, meanwhile, the l...