Utilization of gneiss coarse aggregate and steel slag fine aggregate in asphalt mixture

Chen, Zongwu; Wu, Shaopeng; Wen, Jun; Zhao, Meiling; Yi, Mingwei; Wan, Jiuming

doi:10.1016/j.conbuildmat.2015.05.070

Cited by 74 publications

(30 citation statements)

References 23 publications

(39 reference statements)

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“…Due to the instability and uncleanness of steel slag fine aggregate, it would weaken the pavement performance of asphalt mixture [26,27]. In addition, the lager specific surface area of steel slag fine aggregate would cause more volume expansion and additional bitumen consumption in comparison with SSCA [28,29]. Considering engineering performance and economy, basalt fine aggregate was used as fine aggregate in this study, and steel slag fine aggregate was not adopted.…”

Section: Properties Test Values Specificationmentioning

confidence: 99%

Laboratory Evaluation on the Performance of Porous Asphalt Mixture with Steel Slag for Seasonal Frozen Regions

et al. 2019

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Porous asphalt mixtures with steel slag (PAM-SS), as an eco-friendly and low-cost pavement material, are conducive to addressing the issue of urban floods and natural resource shortages. The primary objective of this paper was to explore the feasibility of the application of PAM-SS for seasonal frozen regions, and ascertain the optimal replacement percentage of natural aggregate. Steel slag coarse aggregate (SSCA) was used to replace basalt coarse aggregate (BCA) at four levels (25%, 50%, 75%, 100%) by equal volume. The volume characteristics, mechanical properties, low-temperature cracking resistance, water stability, and freeze-thaw (F-T) durability of the mixture were assessed. The results indicated that the low-temperature cracking resistance of the mixture was significantly enhanced and acoustic emission (AE) energy was uniformly released by the incorporation of steel slag. Furthermore, the porosity, permeability, Marshall stability (MS), and the resistance against water damage and F-T cycles were also significantly improved. Based on the experimental results, the complete replacement of natural aggregate is advisable to obtain an optimal overall performance.

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Section: Properties Test Values Specificationmentioning

confidence: 99%

Laboratory Evaluation on the Performance of Porous Asphalt Mixture with Steel Slag for Seasonal Frozen Regions

et al. 2019

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“…Wang Q divided BOF steel slags into three grades based on alkalinity: low alkalinity slag ( M < 1.8), intermediate alkalinity slag (1.8 < M < 2.5) and high alkalinity slag ( M > 2.5) [33]. Chen indicated that intermediate alkalinity slag and high alkalinity slag had better adhesion to asphalt binder [3]. Therefore, It can be seen from the XRF results, all three steel slags are medium-high alkalinity steel slags ( M > 1.8) and has good adhesion to asphalt binder.…”

Section: Resultsmentioning

confidence: 99%

“…In recent years, rapid development of transportation infrastructure has aroused various obstacles [1], the lack of substantive natural aggregates which possess significant qualities is the most urgent one [2]. Substantive natural aggregates made asphalt mixtures inferior in moisture damage, crack resistance and rutting deformation in road construction [3,4]. The lack of them has made researchers to take other measures to alleviate the crisis, like the use of industrial waste [5].…”

Section: Introductionmentioning

confidence: 99%

Morphological Discrepancy of Various Basic Oxygen Furnace Steel Slags and Road Performance of Corresponding Asphalt Mixtures

et al. 2019

Materials

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Due to the difference of cooling and treatment processes (rolling method, hot braised method, layer pouring method), basic oxygen furnace (BOF) steel slag can be mainly classified as roller steel slag (RSS), hot braised steel slag (HBSS) and layer pouring steel slag (LPSS). Treatment difference directly results in the performance variations of different BOF steel slag and corresponding asphalt mixtures. The primary purpose of this research was to examine the effects of different cooling and treatment processes on the morphological discrepancy of different BOF steel slag. Also, the road performances of corresponding asphalt mixtures, and mechanism between steel slag performance and road performance were studied. The results show that LPSS owns the largest variability of angular index and texture index, and RSS has the most balanced morphological parameters. The structure of RSS asphalt mixture is advantageous for improving the ability of the asphalt mixture to resist the deformation and enhancing the stability of structure. Higher content of CaO and lower content of SiO2 make the acid-base reaction of RSS asphalt mixture most intense, which contribute to the best road performance of it.

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“…This was because the specific gravity of BOF slag was larger than limestone, and volume control method was used in order to consistently maintain the volume composition of different mixtures. Therefore, the gradation curves for different mixtures were not completely overlapped in the coordinate system of mass passing percent (1, 11).…”

Section: Methodsmentioning

confidence: 99%

Function Evaluation of Asphalt Mixture with Industrially Produced BOF Slag Aggregate

Zhao

Chen

et al. 2016

Journal of Applied Biomaterials & Functional Materials

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Utilization of gneiss coarse aggregate and steel slag fine aggregate in asphalt mixture

Cited by 74 publications

References 23 publications

Laboratory Evaluation on the Performance of Porous Asphalt Mixture with Steel Slag for Seasonal Frozen Regions

Laboratory Evaluation on the Performance of Porous Asphalt Mixture with Steel Slag for Seasonal Frozen Regions

Morphological Discrepancy of Various Basic Oxygen Furnace Steel Slags and Road Performance of Corresponding Asphalt Mixtures

Function Evaluation of Asphalt Mixture with Industrially Produced BOF Slag Aggregate

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