Comprehensive performance evaluation of low-carbon modified asphalt based on efficacy coefficient method

Chen, Qian; Wang, Chaohui; Wen, Penghui; Wang, Menghao; Zhao, Jianxiong

doi:10.1016/j.jclepro.2018.08.316

Cited by 63 publications

(20 citation statements)

References 14 publications

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“…Moreover, the rutting factors for T3 modified asphalt binder after RTFO aging and PAV aging is always the best, which shown that the rheological characters of TMA binder can be promoted by negative ions treated method during two aging procedure, both RTFOT aging and PAV aging. of tourmaline modifier [35]. Moreover, the rutting factors for T3 modified asphalt binder after RTFO aging and PAV aging is always the best, which shown that the rheological characters of TMA binder can be promoted by negative ions treated method during two aging procedure, both RTFOT aging and PAV aging.…”

Section: Aging Resistance Of Tmamentioning

confidence: 84%

“…The rutting factor G * / sin δ of original asphalt and modified asphalt decreases rapidly with increasing temperature. Tourmaline modified asphalt has a higher rutting factor than original asphalt, which means that the properties of modified asphalt binder to combat shear deformation when the temperature is high can be enhanced by the addition of tourmaline modifier [35]. Moreover, the rutting factors for T3 modified asphalt binder after RTFO aging and PAV aging is always the best, which shown that the rheological characters of TMA binder can be promoted by negative ions treated method during two aging procedure, both RTFOT aging and PAV aging.…”

Section: Aging Resistance Of Tmamentioning

confidence: 99%

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Research on the Rheological Characteristics and Aging Resistance of Asphalt Modified with Tourmaline

Dong

Wang

et al. 2019

Materials

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Tourmaline modified asphalt (TMA) binders were prepared with different modifier types and contents in this research. The routine properties, rheological properties, and aging resistance were evaluated to research the function of tourmaline on the performances of asphalt binders. Test results show that the storage stability can be improved significantly by the smaller particle size and negative-ion treated surface of tourmaline modifier. It indicates that the stiffness and rutting-resistance of TMA binder can be enhanced significantly, and the elastic component of the viscoelastic characteristic can also be increased. Moreover, the complex viscosity and the Zero Shear Viscosity (ZSV) values of tourmaline modified asphalt are increased within the test frequency range, which results in the improvement of deformation resistance of tourmaline modified asphalt. When mixed with asphalt, the tourmaline modifier maintains a two-phase structure, which results in the good rheological property for tourmaline modified asphalt.Materials 2020, 13, 69 2 of 13 powder on the performance of asphalt binders were studied [22]. The influence of calcium carbide modifier on the performances of pavement was emphatically studied [23,24]. The effects of tourmaline on asphalt density, dynamic stability, and flow value were analyzed, and the micro-mechanism of tourmaline modified asphalt was also studied [25][26][27][28]. Organic tourmaline exhibits excellent storage stability due to its reduced surface polarity, which pioneer a new way for the development of mineral and copolymer composites [29]. Çelikbilek et al. evaluated the performances of Tourmaline modified asphalt (TMA) mixture by the means of Grey multi-criteria evaluation model. It was indicated that the model had good reliability and practicability in TMA mixture, which can provide a new theoretical basis for the widely application of TMA [30].The utilization of tourmaline in relative fields has become more and more popular. However, the comprehensive research on the properties of TMA and its mixture is still limited. The main work of this research is to study the properties of TMA under different modifier types and contents. The influences of tourmaline on storage stability, rheological characteristics, aging resistance, and microscope structure of TMA are all analyzed by various experiment methods.

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Section: Aging Resistance Of Tmamentioning

confidence: 84%

Section: Aging Resistance Of Tmamentioning

confidence: 99%

Research on the Rheological Characteristics and Aging Resistance of Asphalt Modified with Tourmaline

Dong

Wang

et al. 2019

Materials

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“…The efficacy coefficient method (ECM) has been used by many researchers to evaluate their subjects [29,30]. In this section, ECM was used to comprehensively evaluate the performance of mixed fiber-reinforced asphalt under different fiber mix ratios.…”

Section: Comprehensive Evaluation Methodsmentioning

confidence: 99%

“…In the comprehensive evaluation of MFRA using the efficacy coefficient method (ECM) [29][30], the adopted indexes in the calculation of efficacy coefficient value are the softening point, ductility, From Figure 12, the change pattern of G*/sin δ is the same as G*. LF shows a better enhancement effect on G*/sin δ than BF, and FMR has more of an impact on the G*/sin δ when the frequency is bigger.…”

Section: Comprehensive Performance Evaluationmentioning

confidence: 99%

“…In the comprehensive evaluation of MFRA using the efficacy coefficient method (ECM) [29,30], the adopted indexes in the calculation of efficacy coefficient value are the softening point, ductility, rutting factor, and oil absorption rate. The softening point represents the high-temperature performance, ductility represents the low temperature performance, the rutting factor represents the rheological properties, and the oil absorption rate represents the asphalt absorption ability of the mixed fibers.…”

Section: Comprehensive Performance Evaluationmentioning

confidence: 99%

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Physical, Rheological, and Morphological Properties of Asphalt Reinforced by Basalt Fiber and Lignin Fiber

Kou

Xiao

et al. 2020

Materials

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Studies show that each kind of fiber has its own advantages in improving the properties of asphalt binders. However, there are very limited research studies about mixed fiber-reinforced asphalt (MFRA). In this study, two kinds of fibers, basalt fiber (BF) and lignin fiber (LF), were selected to reinforce SBS (styrene–butadiene–styrene triblock copolymer)-modified asphalt, which is now widely used in pavement engineering. MFRA samples with different fiber mix ratios (FMRs) were prepared for the tests of softening point, ductility, and rheological properties, the micromorphology of which was studied by using scanning electron microscope (SEM). The oil (asphalt) absorption rates of mixed fibers with different FMRs were also tested. The results show that the properties of MFRA were affected by the physical and chemical properties of fibers. Basalt fiber can better strengthen the physical properties of MFRA, while lignin fiber is good for improving the rheological properties, and the oil absorption rate of lignin fiber is higher than that of basalt fiber. Furthermore, the best FMR calculated by the efficacy coefficient method (ECM) was recommended as 1:2 (BF:LF). An interface layer between the fiber and asphalt was observed from the micro images, proving that the fibers bond well with the asphalt. Generally, mixing BF and LF together into SBS-modified asphalt could make full use of the advantages of different fibers and reinforce the comprehensive performance of MFRA better.

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Carbon performance evaluation system and practice analysis for the sustainable enterprises

Zhang

Yue

Tan

et al. 2022

Sustainable Development

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Sustainable development has become society's focal point. In this context, China's paper industry needs to be more concerned about a low-carbon strategy. Therefore, a carbon performance evaluation system must be built to guide the low-carbon enterprise transformation. Based on the carbon value flow analysis, this study takes JX Paper (a paper-making enterprise) as an example to construct a carbon performance evaluation system consisting of carbon input, transfer, and output indicators.The quantitative and qualitative index weights were determined through a principal component analysis and an analytical hierarchy process. The overall carbon performance increased from 2012 to 2021, but room remains for improvement. These results show that the performance evaluation system provides a helpful reference for enterprises to identify the key factors affecting carbon emissions and evaluate their carbon performance. Moreover, objective criteria should be developed to improve sustainable enterprise carbon performance and low-carbon competitiveness.

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Comprehensive performance evaluation of low-carbon modified asphalt based on efficacy coefficient method

Cited by 63 publications

References 14 publications

Research on the Rheological Characteristics and Aging Resistance of Asphalt Modified with Tourmaline

Research on the Rheological Characteristics and Aging Resistance of Asphalt Modified with Tourmaline

Physical, Rheological, and Morphological Properties of Asphalt Reinforced by Basalt Fiber and Lignin Fiber

Carbon performance evaluation system and practice analysis for the sustainable enterprises

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