Evaluating Low-Temperature fracture toughness of steel slag Aggregate-Included asphalt mixture using response surface method

Shaker, Hamid; Ameri, Mahmoud; Aliha, M.R.M.; Rooholamini, Hamed

doi:10.1016/j.conbuildmat.2023.130647

Cited by 11 publications

(3 citation statements)

References 11 publications

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“…By symmetric and asymmetric three-point bend loading of the disk, both pure mode I and pure mode II deformations are introduced easily by the ENDB sample. [117][118][119][120][121][122] Under mode I and mode II loading conditions, the stressintensity factors or SIFs (that are defined by K I and K II , respectively) are written as below relations for the ENDB sample:…”

Section: Mode I and Mode Ii Fracture Test Configurationsmentioning

confidence: 99%

“…An edge vertical crack of depth a is cut in the middle of flat surface of the disk. By symmetric and asymmetric three‐point bend loading of the disk, both pure mode I and pure mode II deformations are introduced easily by the ENDB sample 117–122 . Under mode I and mode II loading conditions, the stress‐intensity factors or SIFs (that are defined by K I and K II , respectively) are written as below relations for the ENDB sample:

K_{I} goodbreak= \frac{3 italicPS}{D B^{2}} Y_{I} \sqrt{πa}

K_{II} goodbreak= \frac{6 P . S . S^{'}}{D B^{2} ((), S goodbreak+ S^{'})} Y_{II} \sqrt{πa} .

…”

Section: Mode I and Mode Ii Fracture Test Configurationsmentioning

confidence: 99%

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Comparative cracking resistance‐cost study for the hot mix asphalt (HMA) mixtures made of natural and recycled asphaltic materials

Ghoroghi,

Haghighatpour,

Aliha

et al. 2023

Fatigue Fract Eng Mat Struct

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Cracking performance of control and RAPed hot mix asphalt (HMA) mixtures was studied under low and medium temperatures. The effects of recycled asphalt pavement (RAP) content (0 and 50%), compaction method, and temperature (−20, 0 and +20°C) on KIf and KIIf were investigated. Cracking resistances of both modes showed similar trends. The fracture toughness of RAPed mixture at +20°C was higher than the control mixture. However, at −20°C, KIf and KIIf obtained from the RAPed mixture were about 22% lower than control mixture. A cost analysis was performed to compare the manufacturing costs of both mixtures. Accordingly, the cost of HMA mixture containing 50% RAP was 26% less than the control mixture. The proposed life‐cost index in the RAPed mixture was 10, 25, and 100% greater than the control mixture at −20, 0, and +20°C, respectively. Temperature and RAP content had the most important impacts on fracture toughness and cost, respectively.

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Section: Mode I and Mode Ii Fracture Test Configurationsmentioning

confidence: 99%

K_{I} goodbreak= \frac{3 italicPS}{D B^{2}} Y_{I} \sqrt{πa}

K_{II} goodbreak= \frac{6 P . S . S^{'}}{D B^{2} ((), S goodbreak+ S^{'})} Y_{II} \sqrt{πa} .

…”

Section: Mode I and Mode Ii Fracture Test Configurationsmentioning

confidence: 99%

Comparative cracking resistance‐cost study for the hot mix asphalt (HMA) mixtures made of natural and recycled asphaltic materials

Ghoroghi,

Haghighatpour,

Aliha

et al. 2023

Fatigue Fract Eng Mat Struct

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“…Fewer studies involved the use of the Superpave mix design [155] procedure through the use of a shear gyratory compactor [156][157][158]. In general, an increase in OBC was, again, observed when adding steel slags to asphalt mixtures (for instance, the absorbed bitumen of an EAFS mixture was found to be 0.3-0.4% higher with respect to a control mixture [159]).…”

Section: Leachingmentioning

confidence: 99%

The Use of Steel Slags in Asphalt Pavements: A State-of-the-Art Review

et al. 2023

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Steel slag is a by-product obtained through the separation of molten steel from impurities in steel-making furnaces. It can be produced by different types of furnaces (blast, basic oxygen, electric arc, ladle furnaces). The reuse of metallurgical slags in road pavements can pursue aims of recycling and environmental sustainability. Based on the extensive literature, the paper presents a state-of-the-art review concerning the use of slags in asphalt pavements, discussing the main controversial literature findings. Slag manufacturing processes, chemical, morphological, and physical characteristics, affect its contribution to the asphalt mixture, when it partially or fully substitutes natural aggregates. Legislative state-of-the-art environmental issues, weathering, and leaching aspects are also discussed. The main mechanical and durability properties of pavements containing different types of slags are analyzed based on laboratory and field studies. Generally, the higher mechanical properties of steel slag suggest that its inclusion in asphalt mixtures can provide high-performance pavement layers (excellent strength and stiffness, superior rutting and fatigue resistance, low moisture susceptibility). However, several research gaps still exist (e.g., mix design and seasoning procedure, bitumen–aggregate affinity, low-temperature behavior, brittleness); they are discussed to direct possible future study efforts to clarify specific technical aspects, such as, for example, the effect of slag morphology and physical properties on the final mix properties and the development of specific mix design guidelines.

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A Life Cycle Assessment of an Asphalt Mixture with Steel Slag and Reclaimed Asphalt

Moura,

Silva,

Oliveira

et al. 2024

Lecture Notes in Civil Engineering

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Evaluating Low-Temperature fracture toughness of steel slag Aggregate-Included asphalt mixture using response surface method

Cited by 11 publications

References 11 publications

Comparative cracking resistance‐cost study for the hot mix asphalt (HMA) mixtures made of natural and recycled asphaltic materials

Comparative cracking resistance‐cost study for the hot mix asphalt (HMA) mixtures made of natural and recycled asphaltic materials

The Use of Steel Slags in Asphalt Pavements: A State-of-the-Art Review

A Life Cycle Assessment of an Asphalt Mixture with Steel Slag and Reclaimed Asphalt

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