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24 articles for “asphalt concrete”
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Susceptibility Behaviour of Asphalt Concretes Under Varying Mix Temperature Conditions: Study on Stability and Flow
Abstract: Understanding the behaviour of flexible pavements synonymous with asphalt concretes is one that can be complex due to the make-up of the pavement (asphalt concrete) and the external factors that impedes its performance from production stage to service life. The present study had considered one of the most damaging factors to asphalt concrete – mix temperature; and its effect on some of the mix design properties of asphalt concrete that …
Published in International Journal of Concrete Technology · Vol. 3, Issue 1, 2017 · pp. 1–7 Read article
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A comparative study on the use of conventional and osadebe mix designs in predicting the marshall stability of asphalt concrete
Abstract: Asphalt concrete is an important construction material all over the world with its design always following conventional procedure in developing countries such as Nigeria. This study was channelled towards using Osadebe’s theory in comparison to the conventional design procedure in the design of asphalt concrete providing a handy mathematical model for the determination of the stability of asphalt concrete given any components’ mix proportion and vice versa. Two designs were …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 6, Issue 1, 2020 · pp. 10–23 Read article
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Tensile Strain Reduction in Asphalt Concrete Mixtures through Rubberization at the Asphalt Bound – Subgrade Layer Interface
Abstract: Tensile strains are major contributors in determining the fatigue life of asphalt concrete pavement because they are responsible for fatigue cracking. Therefore, knowledge of strains and their role is of vital importance to the Highway Engineer. However, the focus of the present study was to investigate measures by which these damage contributing factor – “tensile strain” could be reduced at the interface of the asphalt concrete – subgrade layer. The …
Published in International Journal of Concrete Technology · Vol. 2, Issue 1, 2016 · pp. 44–53 Read article
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Impact of Microcrack Healing Techniques on Resilient behavior of Asphalt Concrete
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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Correlating the Strength Parameters of Rubber Modified Asphalt Concrete
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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Correlating the Fatigue Life of Asphalt Concrete with Permanent Deformation
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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Comparative Assessment of Tensile and Shear Behavior of Cold, Warm and Hot Mix Asphalt Concrete
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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Influence of Moisture Damage on Resilient Modulus of Asphalt Concrete
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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An Investigation into the Mechanical and Strength Properties of Rubberized Asphalt Concrete
Abstract: In this study, the suitability of large rubber chunks from shredded tires as aggregates in cold mixes for road construction is investigated. The rubber was used as an additive to the asphalt binder. Thirty percent of rubber by weight was introduced into the binder at a higher temperature and the rubber was allowed to react with the binder. It was shown among other findings that for various particle sizes, the …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 4, Issue 1, 2018 · pp. 11–16 Read article
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Re-characterizing of Asphalt Concrete Mix Design Properties Blended with Waste Engine Oil Fractions for Heavy Traffic. (Case Study; Stability and Density)
Abstract: Waste and rising cost of importing admixtures during construction have influenced research into better ways of recycling local waste and reduce cost of importation of admixtures. Waste Engine Oil are checked as non-bituminous and can be incorporated into asphalt concrete mix design. Different researches have shown that some waste/by-products can be included as additive in hot-blend black-top cement to acquire specific beneficial properties. It is on this basis that this …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 8, Issue 1, 2022 · pp. 14–17 Read article
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Evaluating the Rate of Response on Asphalt Concrete Mix Permeability Influenced by Non-Bituminous Modifier on Light Traffic
Abstract: Characterization of material property is fundamental in the Mechanistic-Empirical design of flexible pavement. One such key material property is the stiffness of the pavement these influences tensile strain levels and is imperative for either the determination or pavement cracking synonymous with pavement life. It is on this basis, that the present study explored techniques that will improve the performance of flexible road pavement by modifying its stiffness; dynamic modulus, E* …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 4, Issue 1, 2018 · pp. 33–39 Read article
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Re-Characterization of Strength Properties of Asphalt Concrete Mixtures Using Non Bituminous Modifier – Candle Wax
Abstract: Improving the performance of asphalt concrete mixtures synonymous with flexible pavement has been a major concern in highway engineering. However, design of flexible pavement begins with proper material characterization to ensure that designs are appropriate. It is also pertinent to say that sometimes if not most times the properties of the individual materials that make up the pavement structure falls short of desired expectations. This has led to exploring techniques …
Published in International Journal of Concrete Technology · Vol. 2, Issue 1, 2016 · pp. 30–36 Read article
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Flexural Behavior of Recycled Asphalt Concrete
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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Fluctuation of the Viscoelastic Properties of Asphalt Concrete under Variable Strain Level
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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Maximizing Void Properties from Optimized Local Pozzolans in Wearing Course of Bituminous Concrete Mixtures
Abstract: Failure of asphalt pavement has influenced research into better ways to optimize local pozzolans seenas waste and reduce cost of importation of admixtures. Waste Shell Ashes are checked as localassembled by incorporating them in asphalt concrete mix design. Different research has shown thatsome agricultural waste/by-products can be admitted as mineral fillers in hot-mix asphalt concrete toobtain certain desirable properties. It is on this basis that this research attempts to interrogate …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 7, Issue 2, 2021 · pp. 47–54 Read article
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Studying the Effect of Crumb Rubber Inclusion in the Mix Design Properties of HMA Pavement: A Case Study of Light Traffic
Abstract: Improving the performance of flexible road pavement has been one of the major concerns in highway engineering; these are due to the twin problems of temperature and oxidation that were observed to impede its performance during use. One the fundamental aim of this study is to explore the techniques of crumb rubber inclusion (in 0%, 5%, 10%, 15%, 20% and 25%), these severs as modifier to the mix design properties …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 4, Issue 1, 2018 · pp. 26–32 Read article
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Development of Computer Program for Structural analysis of Flexible Pavement
Abstract: Abstract The main objective of this study is evaluating the distresses (rutting and fatigue) happened in the pavement and determines the effect of several parameters on pavement. This study includes two steps, First experimental work to compute stiffness, rutting parameters and fatigue parameters of three asphaltic layers. Second, was a computer program developed by visual basic languish to evaluating the sensitivity of several parameters (resilient modulus, thickness of layer) on …
Published in International Journal of Structural Engineering and Analysis · Vol. 1, Issue 2, 2015 · pp. 30–38 Read article
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Chemical and Geotechnical Evaluation of Steel Slag for Sustainable Construction Practices
Abstract: Steel slag, a byproduct of the steelmaking process, is generated at an estimated 160 kg per ton ofsteel production. This study explores the chemical and mineral compositions of steel slag,highlighting key compounds such as SiO2, CaO, Fe2O3, Al2O3, and MnO, along with mineralcomponents like C3S, C2S, C4AF, and free-CaO. The research emphasizes the extensive applications ofsteel slag in cement-based products, ceramics, road paving, and concrete admixtures. Specifically, itevaluates the incorporation …
Published in International Journal of Analytical and Applied Chemistry · Vol. 10, Issue 2, 2024 · pp. 28–37 Read article
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Improving Durability of Asphalt Pavement Wearing Course Submerged in Water Using Candle Wax as Water Proofing Agent: An Assessment Using RSI, FDI and SDI
Abstract: Asphalt pavements are designed and constructed to meet mostly stability and durability requirements during its design life. However, durability of asphalt pavements also heavily depends on other physical parameters as good drainage facility apart from having good material mix and structural designs. In the wake of asphalt pavements not supported by good drainage measures it is very likely that these pavements will fail sooner than later. On this basis, the …
Published in International Journal of Concrete Technology · Vol. 3, Issue 2, 2017 · pp. 1–10 Read article
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Thermal Effects on Elastic and Rigidity Modulus of Flexible Pavement Wearing Course
Abstract: Laboratory investigation of flexible pavement was carried out using asphalt concrete samples to simulate the behaviour of actual field conditions of a flexible pavement. The study was carried out in order to ascertain the changes that will result in the elastic and rigidity (shear) modulus of flexible pavement when subjected to increasing temperature conditions (thermal effect). The study became pertinent because mechanistic design of flexible pavement requires as input the …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 3, Issue 2, 2017 · pp. 1–7 Read article