Mechanical Performance of Warm-Mixed Porous Asphalt Mixture with Steel Slag and Crumb-Rubber–SBS Modified Bitumen for Seasonal Frozen Regions

Cheng, Yongchun; Chai, Chao; Liang, Chunyu; Chen, Yu

doi:10.3390/ma12060857

Cited by 24 publications

(18 citation statements)

References 35 publications

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“…First, the asphalt to aggregate ratio (A), crumb-rubber content (B), and basalt fiber content (C) were determined as three independent variables. Then, based on our previous study [22,25,28], the asphalt to aggregate ratio was determined at 4.0, 4.5, and 5.0, and crumb rubber to asphalt ratio was 8%, 10%, and 12%. Basalt fiber content was 0.25%, 0.40%, and 0.55% in relation to the asphalt mixture.…”

Section: Response Surface Methodologymentioning

confidence: 99%

“…The MS test was carried out according to the Chinese standard (GB/T 0709-2011) and specific experimental steps refer to a previous study [22], the Marshall quotient can be calculated from the measured MS and flow value, its calculation method is shown in Equation (2):…”

Section: Marshall Stability Test (Ms)mentioning

confidence: 99%

“…The CPL test was carried out according to the Chinese standard (T 0733-2011), and the adhesion between the binder and aggregate is characterized by the mass loss rate. Its specific experimental steps and calculation method refer to previous study [22].…”

Section: Cantabro Particle Loss Test (Cpl)mentioning

confidence: 99%

“…Before the experiment, the specimens were stored for 6 h in a chamber at −10 • C. For freeze-thaw splitting test, the experimental temperature is 25 • C, and the load application rate is 50 mm/min. Specific conditions and processes of the experiments refer to previous research [22]. At the same time, the PAM made of SBS-modified asphalt and the same aggregate grading (without crumb rubber and basalt fiber) was set as the control group, and the same experiments were carried out.…”

Section: Analysis Of Pavement Performancementioning

confidence: 99%

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A New Eco-Friendly Porous Asphalt Mixture Modified by Crumb Rubber and Basalt Fiber

et al. 2019

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In this paper, the performance of environmentally friendly porous asphalt mixture was optimized by the response surface method. Taking the asphalt-aggregate ratio, crumb-rubber content, and basalt fiber content as the independent variables, the air void, Marshall stability, flow value, Marshall quotient, and Cantabro particle loss are the response values. The best model was determined by fitting the experimental data. After the influence of the independent variables on the response values was clarified, the models were used to optimize the dosage of the asphalt, crumb rubber, and basalt fiber through comprehensive analysis. The results showed that the application of the response surface method can complete the establishment of the models and the optimization of the performance of the porous asphalt mixture with sufficient accuracy. The optimum dosage of the asphalt to aggregate ratio, crumb rubber, and basalt fiber is 4.51%, 11.21%, and 0.42%, respectively. The high-temperature stability, low-temperature crack resistance, water stability, and Cantabro particle loss resistance of the optimized porous asphalt mixture were effectively improved, which provides a reference for the construction of eco-friendly pavement.Sustainability 2019, 11, 5754 2 of 21 worth mentioning that there have been many studies showing that crumb rubber can improve the performance of PAM more comprehensively. Specifically, Jiao et al. [14] researched the failure mode of SBS (styrene-butadiene-styrene)-modified PAM and SBS-crumb-rubber modified PAM by compression and splitting experiments, the results showed that PAM modified by crumb rubber has a more uniform structure and more stable performance. Xie et al. [15] studied the pavement performance of crumb rubber-modified PAM in a long-term operation stage and the results showed that the pavement still showed good anti-rutting performance after five years of operation. Sangiorgi et al. [16] conducted a comprehensive evaluation of the performance of a crumb rubber-modified asphalt mixture. The results showed that although the application of rubber powder reduces the permeability of PAM, it increases the adhesion between the binder and aggregate and decreases the Cantabro particle loss of the mixture. At the same time, the rubber powder-modified asphalt mixture improves its low-temperature crack resistance. The above studies have proved the beneficial effect of crumb rubber on PAM. However, the considerations are relatively simple, and it is impossible to combine various factors to determine the optimum amount of crumb rubber.Fiber-based modifiers have been extensively studied in PAMs [17,18]. It is worth mentioning that basalt fiber is gradually used in modified asphalt mixture due to its high strength, good corrosion resistance, and high-temperature resistance. Cheng et al. [19] determined that the optimum dosage of diatomite and basalt fiber in an asphalt mixture was 14% and 0.32%, respectively, through an orthogonal experimental design. It was found that basalt fiber significantly improves...

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Section: Response Surface Methodologymentioning

confidence: 99%

Section: Marshall Stability Test (Ms)mentioning

confidence: 99%

Section: Cantabro Particle Loss Test (Cpl)mentioning

confidence: 99%

Section: Analysis Of Pavement Performancementioning

confidence: 99%

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A New Eco-Friendly Porous Asphalt Mixture Modified by Crumb Rubber and Basalt Fiber

et al. 2019

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“…The Marshall specimen was compacted on both sides 75 times. The cylinder specimen, with a diameter of 101.6 mm and a height of 63.5 mm, was prepared for the uniaxial creep tests [36][37][38], as shown in Figure 5.…”

Section: Preparationmentioning

confidence: 99%

Investigation on the Micro Deformation Mechanism of Asphalt Mixtures under High Temperatures Based on a Self-Developed Laboratory Test

Guo

Meng

et al. 2020

Materials

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Rutting has always been considered the main disease in asphalt pavement. Dealing with rutting disease would be benefitted by understanding the formation of rutting and testing the rutting performance of mixtures more reasonably. The objective of this paper is to systematically investigate the rutting mechanism by employing a self-designed rutting tester along with the corresponding numerical simulations. The deformation of different positions of the existing tracking tester was found to be inconsistent, and the loading was not in line with reality. Accordingly, a more practical tester was proposed: the reduced scale circular tracking (RSCT) tester integrates the functions of asphalt mixture fabrication and rutting monitoring. The results demonstrated that the loading of the new tester is closer to the actual situation. In addition, determining the stress and displacement characteristics of particles in the asphalt mixture was found to be difficult due to the limitations of the testing methods. Therefore, a two-dimensional virtual rutting test based on the RSCT was built using PFC2D (Particle Flow Code 2 Dimension) to investigate the mechanism of formation in rutting and to obtain the corresponding guidance. The numerical simulation showed that all particles of the specimen tended to move away from the load location. The main cause of rutting formation was the eddy current flow of asphalt mastic driven by coarse aggregates. The aggregates with diameters ranging from 9.5 to 4.75 mm were observed to have the greatest contribution to rutting deformation. Therefore, the aggregate amount of these spans should be focused on in the design of mixture grading.

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Evaluation of performance parameters of cement mortar in semi-flexible pavement using rubber powder and nano silica additives

Davoodi

Esfahani

Bayat

et al. 2021

Construction and Building Materials

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Mechanical Performance of Warm-Mixed Porous Asphalt Mixture with Steel Slag and Crumb-Rubber–SBS Modified Bitumen for Seasonal Frozen Regions

Cited by 24 publications

References 35 publications

A New Eco-Friendly Porous Asphalt Mixture Modified by Crumb Rubber and Basalt Fiber

A New Eco-Friendly Porous Asphalt Mixture Modified by Crumb Rubber and Basalt Fiber

Investigation on the Micro Deformation Mechanism of Asphalt Mixtures under High Temperatures Based on a Self-Developed Laboratory Test

Evaluation of performance parameters of cement mortar in semi-flexible pavement using rubber powder and nano silica additives

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