Behavior of Hot-Mix Asphalt Containing Blast Furnace Slag as Aggregate: Evaluation by Mass and Volume Substitution

Quintana, Hugo Alexánder Rondón; Ruge, Juan Carlos; Farias, Márcio Muniz de

doi:10.1061/(asce)mt.1943-5533.0002574

Cited by 24 publications

(13 citation statements)

References 28 publications

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“…The effect on the resistance of HMA, after the replacement of the coarse fraction of a natural aggregate with BF slag, has been evaluated by performing specific tests. Although significant enhancement in the properties of the HMA mixture has been detected, when limestone is totally replaced, the adhesive properties of the asphalt-aggregate system will be worse [71].…”

Section: By-products Reuse In Road Constructionmentioning

confidence: 99%

Reuse and Recycling of By-Products in the Steel Sector: Recent Achievements Paving the Way to Circular Economy and Industrial Symbiosis in Europe

Branca

Colla

Algermissen

et al. 2020

Metals

129

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Over the last few decades, the European steel industry has focused its efforts on the improvement of by-product recovery and quality, based not only on existing technologies, but also on the development of innovative sustainable solutions. These activities have led the steel industry to save natural resources and to reduce its environmental impact, resulting in being closer to its “zero-waste” goal. In addition, the concept of Circular Economy has been recently strongly emphasised at a European level. The opportunity is perceived of improving the environmental sustainability of the steel production by saving primary raw materials and costs related to by-products and waste landfilling. The aim of this review paper was to analyse the most recent results on the reuse and recycling of by-products of the steelmaking cycles as well as on the exploitation of by-products from other activities outside the steel production cycle, such as alternative carbon sources (e.g., biomasses and plastics). The most relevant results are identified and a global vision of the state-of-the-art is extracted, in order to provide a comprehensive overview of the main outcomes achieved by the European steel industry and of the ongoing or potential synergies with other industrial sectors.

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Section: By-products Reuse In Road Constructionmentioning

confidence: 99%

Reuse and Recycling of By-Products in the Steel Sector: Recent Achievements Paving the Way to Circular Economy and Industrial Symbiosis in Europe

Branca

Colla

Algermissen

et al. 2020

Metals

129

View full text Add to dashboard Cite

show abstract

“…The main principle of the specific surface area conversion method is based on the principle that the same surface area of the aggregate adsorbs the same amount of asphalt. The asphalt-aggregate ratio of asphalt mortar calculated with the specific surface area conversion method is generally low [30,31]. Thus, the δ volume correction method was employed for the calculation of asphalt-aggregate ratio of asphalt mortar in this study.…”

Section: Preparation Of Asphalt Mortar Containing Osw Fillermentioning

confidence: 99%

Aggregate-Bitumen Interface Enhancement Mechanism of Utilization of Oil Shale Waste as Fine Aggregate in Open Grade Friction Course

Guo

Chen

et al. 2019

Coatings

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Oil shale waste (OSW), as fine aggregate in the mixture (particle size less than 4.75 mm), can effectively improve the overall properties of open grade friction course (OGFC), but the reinforcement mechanism is not clear. Thus, a comprehensive investigation of the reinforcement mechanism of OSW as fine aggregate is essential to provide better understanding for promoting its engineering application. In this paper, the reinforcement mechanism of OSW was explored through numerical calculations and laboratory tests from three aspects: macroscopic mechanical characteristics of mixture, micromechanics of asphalt mortar containing OSW filler, and adsorption characteristics of OSW. Numerical simulation results showed that the aggregate with a particle size greater than 4.75 mm in OGFC is the skeleton, which is the main loading bearing aggregate, and the skeleton bears more than 85% of external loads. The beam bending test and indirect tensile test results illustrated that the introduction of OSW improves the shear resistance and flexure-tension resistance properties of asphalt mortar, which is beneficial the overall properties of OGFC. From the Brunauer Emmett Tell test and Scanning Electron Microscope test, it was known that OSW has large specific surface area, dense pore structure, and various mesoporous shapes, which means a larger adsorption area and stronger adsorption with asphalt binder. Three self-developed tests containing asphalt adsorption capacity test, infiltrated asphalt saturation test and aggregate-bitumen interface observation test manifested that the existence of “claws”-pointed synapses at OSW-bitumen interface is the main reason for the significant improvement of properties of asphalt mortar containing OSW filler.

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“…They adhere well with asphalt [2], but their inter-granular porosity is a very important disadvantage in hot mix asphalts (HMA) because it results in increased absorption and consumption of asphalt [2][3][4][5][6]. Potentially, one way to deal with this problem would be to fill in the pores with a material that reacts well with the asphalt.…”

Section: Problem Statement and Objectivementioning

confidence: 99%

“…BFS produces aggregates with rough surface textures, angular particles, high porosity and good adhesion which are compatible with bituminous binders but which require larger than normal amounts of asphalt [6,26]. BFS has particles with lower unit weights and specific gravities than those of natural aggregates [2,5], and asphalt mixtures with BFS show good resistance to stripping and high stability [3]. BFS particles generally show low resistance in Los Angeles abrasion tests, and its field performance has been satisfactory [6].…”

Section: Bfs In Asphalt Mixturesmentioning

confidence: 99%

“…An experimental program designed by [3] to evaluate the effects of substituting BFS for natural fine particles in an HMA found that, in conjunction with asphalt, the fine BFS tends to generate a material with improved properties of resistance under monotonic loading (higher indirect tensile resistance) and dynamic loading (higher resilient modulus and resistance to permanent deformation and fatigue). Rondón et al [2] replaced the coarse fraction of a limestone aggregate with a Brazilian BFS measured alternately in terms of mass and volume. When the volume was replaced, all mechanical properties evaluated (Marshall stability, stability/flow ratio, indirect tensile strength, resilient modulus, permanent deformation and fatigue resistance, moisture damage resistance, and abrasion resistance in Cantabro test) were enhanced.…”

Section: Bfs In Asphalt Mixturesmentioning

confidence: 99%

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Evaluation of Hot-Mix Asphalt Containing Portland Cement Treated Blast Furnace Slag

Quintana

Ruge

Bastidas-Martínez

2019

Archives of Civil Engineering

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Iron production’s waste materials include significant quantities of blast furnace slag (BFS) which could potentially be used as a substitute for natural aggregates in hot mix asphalt (HMA) used in highway projects. Although many of properties of slag are interesting, its porosity and absorption rate would lead to greater consumption of asphalt. For this study, a Portland cement (PC) paste was used to reduce the porosity of a BFS. This PC treated BFS (called BFS-C) was then used in an HMA to replace the coarse fraction of a natural aggregate. Marshall, Indirect Tensile Strength (ITS), resilient modulus and Cantabro tests were then carried out on different HMA mixtures that included BFS-C. Using BFS-C, HMA’s resistance under monotonic loading, stiffness under cyclic loading, and resistance to moisture damage increased remarkably. In addition, the Cantabro abrasion resistance of BFS-C improved was better than that of the HMA mixture produced with untreated BFS.

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Behavior of Hot-Mix Asphalt Containing Blast Furnace Slag as Aggregate: Evaluation by Mass and Volume Substitution

Cited by 24 publications

References 28 publications

Reuse and Recycling of By-Products in the Steel Sector: Recent Achievements Paving the Way to Circular Economy and Industrial Symbiosis in Europe

Reuse and Recycling of By-Products in the Steel Sector: Recent Achievements Paving the Way to Circular Economy and Industrial Symbiosis in Europe

Aggregate-Bitumen Interface Enhancement Mechanism of Utilization of Oil Shale Waste as Fine Aggregate in Open Grade Friction Course

Evaluation of Hot-Mix Asphalt Containing Portland Cement Treated Blast Furnace Slag

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