Moisture stability improvement of asphalt mixture considering the surface characteristics of steel slag coarse aggregate

Chen, Zongwu; Gong, Zhenlong; Jiao, Yu‐Yong; Wang, Yi; Shi, Kui; Wu, Jianchao

doi:10.1016/j.conbuildmat.2020.118987

Cited by 51 publications

(10 citation statements)

References 31 publications

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“…On the one hand, the high strength and interlocking structure of the steel slag aggregates restrained the development of the macro-cracks in aggregates and binders, which weaken the phenomenon of brittle fracture of aggregates [ 59 ]. On the other hand, the rough and porous texture of the steel slag aggregates could absorb more structural bitumen [ 61 ]. Furthermore, the existing studies showed that the chemical acid–base reaction between weak acid bitumen and strong basic steel slag enhances the adhesion between aggregate and bitumen [ 62 , 63 ].…”

Section: Resultsmentioning

confidence: 99%

Fracture Behavior of Permeable Asphalt Mixtures with Steel Slag under Low Temperature Based on Acoustic Emission Technique

Zhu

Liu

et al. 2020

Sensors

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Acoustic emission (AE), as a nondestructive testing (NDT) and real-time monitoring technique, could characterize the damage evolution and fracture behavior of materials. The primary objective of this paper was to investigate the improvement mechanism of steel slag on the low-temperature fracture behavior of permeable asphalt mixtures (PAM). Firstly, steel slag coarse aggregates were used to replace basalt coarse aggregates with equal volume at different levels (0%, 25%, 50%, 75%, and 100%). Then, the low-temperature splitting test with slow loading was used to obtain steady crack growth, and the crack initiation and propagation of specimens were monitored by AE technique in real time. From the low-temperature splitting test results, SS-100 (permeable asphalt mixtures with 100% steel slag) has the optimal low-temperature cracking resistance. Therefore, the difference of fracture behavior between the control group (permeable asphalt mixtures without steel slag) and SS-100 was mainly discussed. From the AE test results, a slight bottom-up trend of sentinel function was founded in the 0.6–0.9 displacement level for SS-100, which is different from the control group. Furthermore, the fracture stages of the control group and SS-100 could be divided based on cumulative RA and cumulative AF curves. The incorporation of 100% steel slag reduced the shear events and restrained the growth of shear cracking of the specimen in the macro-crack stage. Finally, the considerable drops of three kinds of b-values in the final phase were found in the control group, but significant repeated fluctuations in SS-100. In short, the fracture behavior of PAM under low temperature was significantly improved after adding 100% steel slag.

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Section: Resultsmentioning

confidence: 99%

Fracture Behavior of Permeable Asphalt Mixtures with Steel Slag under Low Temperature Based on Acoustic Emission Technique

Zhu

Liu

et al. 2020

Sensors

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“…Researches have indicated that gradation [27], bitumen [28] and mineral [29], were the main factors affecting water stability and viscoelasticity. Under the same gradation of different mixtures, bitumen and mineral had a greater impact on performance after hydrodynamic pore pressure damage.…”

Section: Mechanism Explorationmentioning

confidence: 99%

Influence of Hydrodynamic Pore Pressure Damage on the Performance of Hot-Mixed Renewable Asphalt Mixture

Zeng¹,

Li²,

Yang³

et al. 2023

Journal of Renewable Materials

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For evaluating the water stability of hot-mixed renewable asphalt mixture (HRM), the traditional methods are all tested under still water conditions. Except for damage in still water conditions, the hydrodynamic pore pressure generated by the tire driving on the surface water has a great impact. Thus, the RAP contents of the HRMs were designed at 0%, 30%, 45% and 60% with AC-25 gradation. Then, the self-designed evaluation methods of water stability and dynamic modulus were studied. Finally, the mechanism of the influence of hydrodynamic pore pressure damage on HRMs was studied. The results show that the water stability of HRM containing 30% RAP is equivalent to that of 45% RAP, and the water stability of HRM containing 60% RAP decreases significantly. The Contabro test after MIST treatment can be used as an evaluation method for hydrodynamic pore pressure damage on HRM. Low-speed, heavy-load traffic and larger RAP content have greater damage to the mixture after hydrodynamic pore pressure damage. The performance differences between the aged bitumen and pure bitumen, as well as the aged minerals and new minerals, are continuing to be enlarged in hydrodynamic pore pressure conditions, finally affecting the water stability and dynamic modulus of the HRMs.

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“…Limbah yang dihasilkan tersebut apabila tidak dikelola tentunya akan menjadi masalah yang berkaitan dengan aspek lingkungan. Upaya pemanfaatan limbah sebagai pengganti agregat kasar telah dilaporkan sebelumnya, seperti penggunaan slag besi [5], limbah keramik dan porselin [6], limbah bata ringan [7], limbah beton daur ulang [8], hingga potongan ban bekas [9]. Salah satunya adalah limbah marmer yang dihasilkan pada produksi pengolahan marmer.…”

Section: Pendahuluanunclassified

Pemanfaatan Limbah Batu Marmer sebagai Substitusi Parsial Agregat Kasar pada Campuran Beton terhadap Kuat Tekan Beton

Safari,

Setiawan

2023

DINAREK

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<p>Penelitian ini bertujuan untuk memanfaatkan limbah pecahan marmer sebagai bahan subtitusi parsial batu pecah alami dalam pembuatan beton. Pecahan marmer diperoleh dari daerah Padalarang, Kabupaten Bandung Barat. Sebagai benda uji dalam penelitian ini, digunakan benda uji berbentuk silinder beton berukuran 10 cm × 20 cm. Persentase limbah marmer yang digunakan sebesar 10%, 25%, 50% dan 75% dari total berat agregat kasar yang dibutuhkan. Penggunaan limbah marmer sebagai bahan pengisi dalam adukan beton tidak menurunkan nilai slump dari beton normal. Nilai slump beton dengan agregat kasar dari limbah marmer adalah sebesar 75 – 100 mm, yang masih memenuhi kriteria slump untuk pekerjaan struktur di lapangan. Sementara itu penggantian agregat kasar dengan limbah batu marmer hingga 25% mampu menghasilkan beton dengan nilai kuat tekan beton 30,1 MPa, lebih tinggi 18,97 % dari pada campuran beton normal. Penambahan limbah marmer di atas 50% mengalami penurunan nilai kuat tekan beton. Penggunaan limbah marmer hingga 75% meningkatkan berat jenis beton hingga 2,8% daripada berat jenis beton normal.</p>

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Moisture stability improvement of asphalt mixture considering the surface characteristics of steel slag coarse aggregate

Cited by 51 publications

References 31 publications

Fracture Behavior of Permeable Asphalt Mixtures with Steel Slag under Low Temperature Based on Acoustic Emission Technique

Fracture Behavior of Permeable Asphalt Mixtures with Steel Slag under Low Temperature Based on Acoustic Emission Technique

Influence of Hydrodynamic Pore Pressure Damage on the Performance of Hot-Mixed Renewable Asphalt Mixture

Pemanfaatan Limbah Batu Marmer sebagai Substitusi Parsial Agregat Kasar pada Campuran Beton terhadap Kuat Tekan Beton

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