17 publications
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Fluctuation of the Viscoelastic Properties of Asphalt Concrete under Variable Strain LevelBy Saad Issa Sarsam
Abstract: The viscoelastic properties of asphalt pavement usually practices variable microstrain levels due to the mixed traffic loading throughout its service life. In the present assessment, asphalt concrete mixtures were prepared in the laboratory at optimum binder content, and compacted in a slab mold using the roller compaction. Beam specimens of 5.6 Cm depth, 6.2 Cm width, and 40 Cm length; have been extracted from the slab samples and subjected to …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 9, Issue 2, 2023 · pp. 8–16 Read article →
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Correlating the Fatigue Life of Asphalt Concrete with Permanent DeformationBy Saad Issa Sarsam
Abstract: Modelling the deformation-fatigue life of asphalt concrete can furnish an easy access for prediction of the pavement behavior under various service circumstances. An attempt has been made in this investigation to correlate the fatigue life of asphalt concrete with the permanent deformation after considering the test variables such as binder content, testing temperature, practicing moisture damage, and practicing ageing. It can be observed that at high microstrain level of 750, …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 7, Issue 2, 2021 · pp. 22–32 Read article →
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Impact of Additives on the Split Tensile Strength of Roller Compacted ConcreteBy Saad Issa Sarsam
Abstract: Additives are implemented as partial replacement of Portland cement in concrete to enhance the required physical properties. In the present investigation, roller compacted concrete slab samples were prepared using gap and dense aggregate gradation. Three percentages of Portland cement were adopted, (16, 12, and 10) % by weight of aggregates. Three types of additives, (hydrated lime, fly ash, and fumed silica) were implemented as partial substitute of Portland cement. Core …
Published in International Journal of Concrete Technology · Vol. 7, Issue 2, 2021 · pp. 9–15 Read article →
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Correlating the Strength Parameters of Rubber Modified Asphalt ConcreteBy Saad Issa Sarsam
Abstract: Building verified models can help in predicting performance characteristics of asphalt concrete and saving time and money. An attempt has been made in the present investigation to prepare asphalt concrete mixtures for wearing course. Crumb rubber was implemented to prepare modified asphalt binder, which was obtained from Nasiriyah, Erbil, and Dourah oil refineries. Asphalt concrete specimens of control and rubber modified binder have been prepared and tested for Marshall stability, …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 7, Issue 1, 2021 · pp. 15–20 Read article →
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Impact of Microcrack Healing Techniques on Resilient behavior of Asphalt ConcreteBy Saad Issa Sarsam, Husham Mohammed Al Tuwayyij
Abstract: Concentrated efforts on the development of innovative materials and techniques for asphalt pavement repair are going on, many of them related to crack healing. Flexible pavement usually practices repeated loading and environmental impacts and suffers distresses throughout its service life. Microcracks initiates and can heal itself under controlled conditions. In this Concentrated efforts on thedevelopment of innovative materials and techniquesfor asphalt pavement repair are going on, many of them related …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 6, Issue 1, 2020 · pp. 33–41 Read article →
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Comparative Assessment of Tensile and Shear Behavior of Cold, Warm and Hot Mix Asphalt ConcreteBy Saad Issa Sarsam
Abstract: The environment awareness of toxic gases emissions during the production, transportation, and construction of hot mix asphalt concrete (HMAC) have led to the development of Warm, half warm, and cold mix asphalt concrete. Such development of alternative mixtures is considered as sustainable materials in asphalt concrete paving process. The temperature reduction in the mixing of binder during production, handling, and compaction of the mix results in saving energy, reduction of …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 5, Issue 2, 2019 · pp. 39–47 Read article →
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Field Assessment of Runway Pavement Surface Texture for Baghdad International AirportBy Saad Issa Sarsam
Abstract: One of the major serviceability issues which reflects the suitability of the airport runway for serving international flights is the surface texture of concrete pavement. The concrete surface of the runway 33R-15L of Baghdad international airport is badly covered with large spots of aeroplanes tyre rubber. The international flight companies had claimed that the rough surface of the runway concrete pavement caused damage and deterioration to their aeroplane’s tyres. The …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 5, Issue 2, 2019 · pp. 6–21 Read article →
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Flexural Behavior of Recycled Asphalt ConcreteBy Saad Issa Sarsam
Abstract: The operational health of the road network is of the utmost importance for economic and social life. Fatigue life is affected by the growth and accumulation of cracks, under the action of repeated vehicular loading, aging and effect of the environment. The flexural behavior of asphalt concrete depends mainly on the flexibility of the pavement mixture which deteriorate gradually with time. Recycling could be a suitable action to reserve such …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 4, Issue 2, 2018 · pp. 32–37 Read article →
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Assessment of Pedestrian Walking Speed Through the Religious Occasions in IraqBy Saad Issa Sarsam
Abstract: The design of safe pedestrian facilities usually depends on assessment of pedestrian characteristics and behavior. In this investigation, pedestrian walking speed through the religious occasion has been monitored at three locations: Al-Kadhimiya (Imam Al-Kadim), Najaf, and Karbala (Imam Al-Husain) holy shrines. Video captures of the pedestrians through their walking to the two holy shrines have been prepared and analyzed for walking speed, gender, age groups, and clothing tradition. The pedestrian …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 4, Issue 2, 2018 · pp. 1–13 Read article →
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Influence of Compaction Technique on Shear Strength of Modified Subgrade SoilBy Saad Issa Sarsam, Ahmad Zuhair AL Sandok
Abstract: The subgrade soil is considered as the foundation for the roadway structure, it is responsible to provide the required stability for the overlaying pavement layers and to limit the deformation due to traffic load repetitions by furnishing homogeneous stress distribution. For poor soil condition, grid reinforcement or Asphalt stabilization techniques are usually implemented to control the deformation and improve shear strength of poor granular subgrade soil. In this work, the …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 4, Issue 1, 2018 · pp. 17–25 Read article →
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Comparative Modeling of Pavement Surface Texture Variables Using ANN and SPSS SoftwareBy Saad Issa Sarsam
Abstract: The health of Roadway pavement surface is considered as one of the major issues for safe driving. Pavement surface condition is usually referred to micro and macro textures which enhances the friction between the pavement surface and vehicular tires, while it provides a proper drainage for heavy rainfall water. Measurement of the surface texture is not yet standardized, and many different techniques are implemented by various road agencies around the …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 2, Issue 2, 2016 · pp. 30–40 Read article →
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Influence of Moisture Damage on Resilient Modulus of Asphalt ConcreteBy Saad Issa Sarsam
Abstract: Deterioration of asphalt concrete pavement by the action of moisture damage is a major problem facing the serviceability and durability of flexible pavement, it starts with micro cracking of the pavement surface due to load repetitions, and followed by stripping and disintegration of pavement layer. In this investigation, the influence of moisture damage on resilient modulus of asphalt concrete had been assessed under repeated tensile and shear stresses. Asphalt concrete …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 2, Issue 2, 2016 · pp. 12–19 Read article →
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Modeling the Shape of Compaction Curve for Asphalt Stabilized SoilBy Saad Issa Sarsam
Abstract: The knowledge and modeling of the exact shape of the laboratory compaction curve provides a means for a good understanding of the susceptibility of soil to water. The models provide effective means for quantifying the sensitivity of the compaction process to the various factors affecting the process. The basic mathematical description of soil compaction is the relationship between molding moisture and the dry density. Two types of soil and three …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 2, Issue 1, 2016 · pp. 10–21 Read article →
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Comparative Assessment of Drivers Characteristics at Baghdad Urban and Suburban AreaBy Saad Issa Sarsam
Abstract: Abstract The importance of road safety demands that the components of safe driving be understood. Variability among people, in terms of gender, age, socio-economic levels, education, health, driving experience, and tradition could have major impacts on the field of vision and the perception reaction time, which seem to be good measures of safe driving. In Baghdad, public efforts have managed to stabilize or decrease accident rates; however, because of the …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 1, Issue 1, 2015 · pp. 15–24 Read article →
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Implementation of Close Range Photogrammetry to Evaluate Distresses at Asphalt Pavement SurfaceBy Saad Issa Sarsam, Afrah Mekki Daham, Amal Mahdi Ali
Abstract: Roadway pavements surface deteriorate with time because of traffic loading, environment conditions, and poor pavement maintenance management. The aim of this research is to implement close range photogrammetry technique for evaluation of the pavement surface distresses. The assessment was based on comparison with the traditional visual inspection method and validation of its equivalency with visual evaluation. The asphalt concrete pavement surface distresses such as (cracking type and crack width, patching …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 1, Issue 1, 2015 · pp. 1–14 Read article →
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Field Investigation on the Use of Mobile Phone While DrivingBy Saad Issa Sarsam, Duaa Mouiad Lafta, Nawaf Hani Muslem
Abstract: While talking through mobile phone, drivers are much less aware of what is happening on the road around them; fail to see road signs, maintain proper lane position and steady speed; react more slowly and take longer to brake. Moreover, drivers are more likely to enter unsafe gaps in traffic, feel more stressed and frustrated, and are more likely to tailgate the vehicle in front. This paper demonstrates field investigation …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 1, Issue 2, 2015 · pp. 11–19 Read article →
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Assessment of Pedestrian Walking Characteristics at Erbil CBDBy Saad Issa Sarsam, Marwa Wahab Abdulameer
Abstract: To enable and encourage walking, understanding of the characteristics of pedestrian movements is vital. The restrictions on vehicular movement, and scarcity of parking lots had changed the whole traffic movement to the unserviceable condition. Therefore, walking is considered as the most efficient mode of transportation at Erbil CBD area. In developing countries like Iraq, however, the recognition of the importance of pedestrian walking studies is still infancy; the published data …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 1, Issue 2, 2015 · pp. 1–10 Read article →