Study on the performance and sustainability of modified waste crumb rubber and steel slag powder/SBS composite modified asphalt mastic

Meng, Yongjun; Yan, Tianyi; Muhammad, Yaseen; Li, Jing; Qin, Pengfei; Ling, Lishan; Rong, Hongliu; Yang, Xiaolong

doi:10.1016/j.jclepro.2022.130563

Cited by 31 publications

(7 citation statements)

References 75 publications

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“…Furthermore, because a large number of nano‐porous fibers are entangled and connected with each other, a stable and well‐developed network structure is formed in asphalt. [ 43 ] This shows that the action mechanism of E‐PAN modified asphalt is similar to that of SBS in asphalt. This means that during the preparation of modified asphalt, the network structure is formed by swelling and development in the asphalt, and the addition of E‐PAN is conducive for the formation of excellent network structure by SBS in asphalt.…”

Section: Resultsmentioning

confidence: 73%

Electrospinning strategy for the preparation of nano‐porous fibers as modifier for inducing the network structure and enhancing mechanical properties of SBS‐modified asphalt

et al. 2022

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Electrospinning is used to control the interface structure of macro‐polyacrylonitrile (PAN) fibers, and nano‐porous fibers (E‐PAN) which possess enhanced adhesion and interface effects. Herein, E‐PAN was prepared via electrospinning and was in turn incorporated into styrene‐butadiene‐styrene (SBS) asphalt to prepare PAN modified asphalt. The effect of E‐PAN addition on the performance of modified asphalt was explored. Fourier transform infrared (FT‐IR) spectroscopy, X‐ray diffraction, scanning electron microscopy, atomic force microscopy (AFM), and AFM tests confirmed that E‐PAN exhibited a highly rough nano‐porous skeleton without any prominent structural damage during the preparation process. The three major indexes, dynamic shearing rheometer, MSCR, rotational viscosity, and thermogravimetric analysis tests results showed that E‐PAN modified asphalt exhibited excellent viscoelasticity, anti‐rutting and anti‐fatigue properties and thermal stability (THRI of 192.7°C). FT‐IR test of the four components of modified asphalt confirmed that E‐PAN chemically crosslinked with the saturates and aromatics in the base asphalt and SBS, which resulted in a uniform and well‐developed network structure. In addition, Brauner‐Emmett‐Teller and fluorescence microscopy results confirmed that E‐PAN got fully swollen in a behavior similar to that of SBS in the base asphalt, and hence helped SBS to form an excellent network structure in asphalt. E‐PAN played the important role of stress buffer, mutual entanglement, and good thermal insulation inside the asphalt.

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Section: Resultsmentioning

confidence: 73%

Electrospinning strategy for the preparation of nano‐porous fibers as modifier for inducing the network structure and enhancing mechanical properties of SBS‐modified asphalt

et al. 2022

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“…After adding rubber powder to asphalt, it will undergo swelling and partial dissolution under high-speed shear loads [ 3 , 32 ]. The swelled rubber powder can adsorb lightweight components (aromatics and saturates) in the asphalt [ 23 , 33 ], resulting in an increase in the relative content of resin and asphaltene in the compound-modified asphalt, and improving the asphalt’s shear deformation resistance.…”

Section: Resultsmentioning

confidence: 99%

Evaluation and Correlation Analysis of the Rheological Properties of Ground Tire Rubber and Styrene Butadiene Styrene Compound-Modified Asphalt

Tan

et al. 2023

Polymers

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With the increase in highway traffic volume, many waste tires are being produced, which puts serious pressure on the global ecological environment. Processing waste tires into powder and adding them to asphalt is an important and effective way to solve this noticeable environmental challenge. In this paper, to produce ground tire rubber (GTR) and styrene-butadiene-styrene (SBS) compound-modified asphalt, GTR was put into SBS-modified asphalt (GTRSA). Subsequently, some ordinary property tests, frequency sweep tests, and multiple stress creep recovery tests were conducted to investigate the conventional properties and rheological properties of GTRSA. Moreover, the 2S2P1D (two springs, two parabolic elements, and one dashpot) model was adopted to analyze the consequences of adding GTR content on the rheological properties of GTRSA. Finally, the Pearson correlation coefficient was employed to reveal the connection between the conventional properties and the rheological properties. The results show that GTR has a great impact on improving the rutting resistance, thermo-sensitive performance, shear resistance capability, stress sensitivity, and creep recovery performance of GTRSA. Adding 20% GTR can improve the creep recovery rate to 80.8%. The 5 °C ductility index suggests that GTR makes a difference to the low-temperature properties. The rheological properties and conventional properties had a strong linear link.

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“…A similar trend was observed for 30% marble dust and 35% marble dust. The possibility for additional fiber-fiber interactions rose when fibre content exceeded 0.8 percent, reducing the production of fiber-matrix and matrix-matrix connections and resulting in flexural strength loss [20][21][22]. In addition, for 100 mm and 125 mm PSF, a similar effect of MD and BD on flexural strength was observed.…”

Section: Flexural Strength Of Unfired Admixed Soil Blockmentioning

confidence: 92%

Studies on the Utilization of Marble Dust, Bagasse Ash, and Paddy Straw Wastes to Improve the Mechanical Characteristics of Unfired Soil Blocks

et al. 2022

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Earthen materials are the world’s oldest and cheapest construction materials. Compacted soil stabilised blocks are unfired admixed soil blocks made up of soil plus stabilisers such as binders, fibres, or a combination of both. The manufacturing and usage of cement and cement blocks raises a number of environmental and economic challenges. As a result, researchers are attempting to develop an alternative to cement blocks, and various tests on unfired admixed soil blocks have been performed. This investigation undertakes use of agricultural waste (i.e., paddy straw fiber and sugarcane bagasse ash) and industrial waste (i.e., marble dust) in manufacturing unfired admixed soil blocks. The applicability of unfired soil blocks admixed with marble dust, paddy straw fiber, and bagasse ash were studied. The marble dust level ranged from 25% to 35%, the bagasse ash content ranged from 7.5% to 12.5%, and the content of paddy straw fibre ranged from 0.8% to 1.2% by soil dry weight. Various tests were conducted on 81 mix designs of the prepared unfired admixed soil blocks to determine the mechanical properties of the blocks, followed by modeling and optimization. The characterization of the materials using XRD and XRF and of the specimens using SEM and EDS were performed for the mineral constituents and microstructural analysis. The findings demonstrate that the suggested method is a superior alternative to burned bricks for improving the mechanical properties of unfired admixed soil blocks.

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Study on the performance and sustainability of modified waste crumb rubber and steel slag powder/SBS composite modified asphalt mastic

Cited by 31 publications

References 75 publications

Electrospinning strategy for the preparation of nano‐porous fibers as modifier for inducing the network structure and enhancing mechanical properties of SBS‐modified asphalt

Electrospinning strategy for the preparation of nano‐porous fibers as modifier for inducing the network structure and enhancing mechanical properties of SBS‐modified asphalt

Evaluation and Correlation Analysis of the Rheological Properties of Ground Tire Rubber and Styrene Butadiene Styrene Compound-Modified Asphalt

Studies on the Utilization of Marble Dust, Bagasse Ash, and Paddy Straw Wastes to Improve the Mechanical Characteristics of Unfired Soil Blocks

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