A review on the utilization of waste material in asphalt pavements

Victory, Waikhom

doi:10.1007/s11356-021-18245-0

Cited by 24 publications

(4 citation statements)

References 31 publications

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“…Steel slag filler is a high basicity filler, with strong adhesive bonding ability to asphaltbinder. Thus, as reported in the literature [30][31][32], steel slag utilization may valuably serve as an effective way to save the limited and diminishing natural resources. The chemical composition and mineral composition of steel slag are extremely complex, and the interaction between asphalt-binder and steel slag aggregate-filler depends on mechanical reinforcement and physicochemical interaction [33].…”

Section: Introductionmentioning

confidence: 83%

Research on the Interaction Capability and Microscopic Interfacial Mechanism between Asphalt-Binder and Steel Slag Aggregate-Filler

Chen

Wen

Zhou³

et al. 2022

Coatings

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To explore the applicability of steel slag porous asphalt mixture, the interaction capability and microscopic interfacial mechanism between asphalt-binder and steel slag aggregate-filler were investigated in this laboratory study. These objectives were accomplished by comparing and analyzing the differences between steel slag and basalt aggregates in interacting with the asphalt-binder. The study methodology involved preparing basalt and steel slag asphalt mortar to evaluate the penetration, ductility, softening point, toughness, and tenacity. Thereafter, the interaction capability between the asphalt-binder and aggregates was characterized using the interaction parameters of the asphalt mortar obtained from dynamic shear rheometer (DSR) testing. For studying the functional groups and chemical bonding of the asphalt mortar, the Fourier Transform infrared (FTIR) spectrometer was used, whilst the interfacial bonding between the asphalt-binder and aggregates was analyzed using the scanning electron microscope (SEM). The corresponding test results indicated that the physical and rheological properties of the two asphalt mortars were similar. However, whilst the FTIR analysis indicated domination through chemical reactions, the interaction capability and interfacial bonding between the asphalt-binder and steel slag aggregates exhibited superiority over that between the asphalt-binder and basalt aggregates, with pronounced adsorption peaks appearing in the steel slag asphalt mortar spectrum. On the other hand, the SEM test revealed that, compared with the basalt, the micro-interfacial phases between the steel slag and asphalt-binder were more continuous and uniform, which could potentially enhance the interfacial bond strength between the asphalt-binder and aggregates (filler).

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Section: Introductionmentioning

confidence: 83%

Research on the Interaction Capability and Microscopic Interfacial Mechanism between Asphalt-Binder and Steel Slag Aggregate-Filler

Chen

Wen

Zhou³

et al. 2022

Coatings

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“…8,9 The reuse of large amounts of steel slag as filling materials will facilitate the conservation of natural resources, reduce waste storage space, and minimize the mining process for raw materials. 6 Currently, steel slag has been widely applied in the construction field, such as being an additive in cement production, [10][11][12][13][14][15][16] embankments, 17 road construction, [18][19][20][21] backfill materials, [22][23][24] and bonded composites. 25 Although steel slag has great potential as a filler material, its use has been limited due to three main disadvantages that harm the surrounding environment: steel slag has 1) toxic components, 26,27 2) radioactive properties, 13,28 and 3) heavy metals, 29,30 which have a serious impact on the environment, especially in surface and ground water.…”

Section: Introductionmentioning

confidence: 99%

Assessment of water quality under real-world conditions: effects of steel slag backfills on ground and surface water

Le¹,

Le²,

Cao³

et al. 2022

Environ. Sci.: Water Res. Technol.

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“…The problems caused by the disposal of scrap tires are international in scope, and remain an environmental concern that many countries must handle [ 3 ]. From 1.6 billion new tires produced yearly, 1 billion scrap tires are generated, and it is estimated that only 100 million are forwarded to recycling facilities [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Contribution of Asphalt Rubber Mixtures to Sustainable Pavements by Reducing Pavement Thickness

et al. 2022

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Asphalt rubber mixtures have been used as pavement surface layers due to their ability to prevent early degradation, and are considered a sustainable option. This study performed analysis comparing the fatigue resistance of asphalt rubber mixtures of different combinations of asphalt bases, crumb rubber, and gradation, in order to estimate the performance of asphalt rubber mixtures as pavement surface layers. The methodology was developed in a laboratory and involved asphalt rubber production by continuous and terminal blend systems with different crumb rubbers and asphalt base types. Asphalt rubber mixtures with varying gradations and an unmodified asphalt mixture as a reference were produced. The mechanical behavior as a dynamic modulus and with respect to fatigue resistance was evaluated using a four-point bending test. In order to verify each of the asphalt rubber mixtures’ contribution as a surface layer, pavement structures were designed and their lifespans were compared. The findings showed that all asphalt rubber mixtures presented higher fatigue resistance than the reference. For pavement design, in comparison with the reference mixture, the thickness of the surface layer could be reduced by at least 50% while achieving the same life, proving its successful performance. This study demonstrated the effective contribution of crumb rubber from scrap tires as an asphalt modifier for producing sustainable mixtures with adequate fatigue performance.

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A review on the utilization of waste material in asphalt pavements

Cited by 24 publications

References 31 publications

Research on the Interaction Capability and Microscopic Interfacial Mechanism between Asphalt-Binder and Steel Slag Aggregate-Filler

Research on the Interaction Capability and Microscopic Interfacial Mechanism between Asphalt-Binder and Steel Slag Aggregate-Filler

Assessment of water quality under real-world conditions: effects of steel slag backfills on ground and surface water

Contribution of Asphalt Rubber Mixtures to Sustainable Pavements by Reducing Pavement Thickness

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