12 publications
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Influence of Constant Micro Strain Levels on the Strength Properties of the Asphalt Concrete mixtureBy saad sarsam
Abstract: Asphalt concrete mixture is designed to resist the deformation and vehicular traffic loading throughout its service life. However, when the asphalt concrete pavement practices over loading within the service life period, it exhibits cracking and rutting. In the present investigation, an attempt has been taken to understand the strength performance of asphalt concrete when practicing variable levels of constant stresses. Asphalt concrete mixture was prepared at optimum asphalt cement requirement …
Published in Trends in Transport Engineering and Applications · Vol. 10, Issue 3, 2023 · pp. 29–35 Read article →
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Assessing the Influence of Loading Mode and Stabilization on the Deformation of Gypseous soilBy saad sarsam
Abstract: Gypseous subgrade soil usually exhibit acceptable strength when compacted with optimum moisture requirement and tested in dry condition. However, it loses its strength when came in touch with water. Such behaviour possesses a risk of failure when such soil is implemented in the construction of roadway embankment. In the present investigation, Gypseous soil was implemented in the construction of eight embankment models. The first model was the soil tested in …
Published in Journal of Geotechnical Engineering · Vol. 10, Issue 2, 2023 · pp. 34–40 Read article →
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Assessing the Sensitivity of the Strength Properties of Asphalt Concrete Mixture to the Variation in Asphalt Binder ContentBy saad sarsam
Abstract: The variationsin the asphalt cement binder content withinthe job mix formula, may exhibit a great influence on the required strength properties of asphalt concrete mixture. The present investigation deals with asphalt concrete mixtures which are usually implemented for wearing course pavement layer. The mixtures were prepared at optimum binder content of 4.8 %, and at ± 0.5 % of the optimum binder content and subjected to the short-term ageing process.Slab …
Published in Trends in Transport Engineering and Applications · Vol. 9, Issue 2, 2022 · pp. 26–34 Read article →
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Implementation of Image Processing Technique to Assess the Surface Free Energy of Asphalt BinderBy saad sarsam
Abstract: The adhesive properties of asphalt binder are considered as a major issue in the durability of the pavement. When asphalt cement does not match the standard specification required for paving work, one of the existing remedy processes is to implement modifiers to enhance the quality. Image processing technique can detect the variation in the adhesive properties through the assessment of surface free energy of the binder. In the present assessment, …
Published in Trends in Transport Engineering and Applications · Vol. 9, Issue 1, 2022 Read article →
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Assessing the influence of aggregates and cement type on the properties of roller compacted concreteBy saad sarsam
Abstract: Roller compacted concrete pavement is suitable for heavy traffic and harsh environment. In the present investigation, roller compacted concrete slab samples have been prepared using two types of aggregates, (crushed and rounded), and two types of cement binder, (ordinary Portland and sulphate resistant). Cubes and beam specimens have been extracted from the slab samples with the aid of diamond saw. Specimens were tested for bulk density, ultrasound pulse velocity, compressive …
Published in Trends in Transport Engineering and Applications · Vol. 8, Issue 2, 2021 · pp. 1–7 Read article →
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Detecting the Additives Impact on The Durability of Asphalt ConcreteBy saad sarsam
Abstract: Modification of asphalt cement with additives is considered as a sustainable issue to enhance the asphalt concrete quality and durability among the expected service life. An attempt has been made in the present investigation to detect the influence of modification of the asphalt binder by 2 % silica fumes and 4 % fly ash additives on the durability of asphalt concrete in terms of fatigue life under long-term ageing and …
Published in Trends in Transport Engineering and Applications · Vol. 8, Issue 2, 2021 · pp. 21–29 Read article →
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Assessment of Deformation under Repeated Cracking-Healing Cycles of Asphalt ConcreteBy saad sarsam
Abstract: The Asphalt concrete wearing course is subjected to direct tyre loading and practices distresses such as microcracks. However, asphalt pavement is known to exhibit self-healing ability of microcracks under repeated loading with rest period and controlled environment. In this work, the permanent deformation of the wearing course was assessed under repeated cracking and healing cycles. Asphalt concrete specimens of 100 mm diameter and 63 mm height have been prepared with …
Published in Trends in Transport Engineering and Applications · Vol. 7, Issue 3, 2020 · pp. 13–25 Read article →
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Modeling the Influence of Microcrack Healing on Deformation of Asphalt Concrete Using NDTBy saad sarsam, Nazar Sajad Kadium
Abstract: Asphalt concrete pavement practices heavy loading and environmental impacts through its service life. Micro cracks usually initiate and accumulate to form various types of distresses. However, asphalt concrete has the ability of self-healing with rest periods and hot environment conditions. The mechanical properties of Asphalt concrete is complex due to its dependency of temperature, loading frequency, and strain level. In this investigation, asphalt concrete specimens of wearing, binder and base …
Published in Trends in Transport Engineering and Applications · Vol. 6, Issue 3, 2019 · pp. 37–47 Read article →
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Assessing the Durability of Stone Matrix Asphalt ConcreteBy saad sarsam, Shahed Mahmood
Abstract: Stone Mastic Asphalt (SMA) is widely used throughout the world as one of the preferred asphalt surfacings. The local specifications define asphalt concrete durability based on maximum loads at failure. Therefore, it is required to assess the durability of the road surface materials of SMA and their ability to resist operational effects in terms of environmental impact. In this investigation, the durability of stone matrix asphalt concrete was assessed in …
Published in Trends in Transport Engineering and Applications · Vol. 6, Issue 3, 2019 · pp. 1–8 Read article →
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Dynamic Behavior of Recycled Asphalt ConcreteBy saad sarsam, Mohammed Chaloob Saleem
Abstract: Utilizing reclaimed asphalt pavement (RAP) in new asphalt mixtures has increased in recent years because of its economic and environmental benefits. The dynamic behavior of the recycled asphalt concrete (with cutback and emulsion) in terms of resilient modulus (Mr), rutting resistance, and permanent microstrain have been investigated in this work. Cylindrical specimens of 102 mm in diameter and 102 mm in height have been prepared from the recycled mixture after …
Published in Trends in Transport Engineering and Applications · Vol. 5, Issue 3, 2018 · pp. 1–7 Read article →
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Modeling Pedestrian Walking and Crossing Characteristics at Nasiriya CBDBy saad sarsam, alaa almusawi
Abstract: To empower and support walking, comprehension of pedestrian and development of safe facilities for walking is essential. This work examines the factors which influence walking and crossing speed. The variations in walking speed of pedestrians are modeled and related to pedestrian characteristics such as gender, age group, and clothing traditions. On the other hand, the crossing speed of pedestrians was detected, and modeled. The counts of pedestrians were performed using …
Published in Trends in Transport Engineering and Applications · Vol. 5, Issue 3, 2018 · pp. 8–17 Read article →
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Dynamic Behavior of Asphalt Stabilized and Grid Reinforced Subgrade SoilBy saad sarsam, Ahmad AL Sandok
Abstract: The impact of repeated loading (punching shear) on Asphalt stabilized and grid reinforced subgrade soil have been investigated in this study. Specimens of 152mm diameter and 116 mm in height have been prepared, cured, and then tested using the pneumatic repeated load system PRLS. The deformation-load repetitions data were recorded for each case. Data were fed to the finite element software for the modeling process. An assessment was conducted to …
Published in Trends in Transport Engineering and Applications · Vol. 5, Issue 2, 2018 · pp. 1–9 Read article →