Research on Proportioning Design of Tourmaline Modified Asphalt Mixture

Wang, Xin Qi; Dong, Biao; Wang, Xiaohua

doi:10.4028/www.scientific.net/amm.405-408.1928

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…From the literature, the addition of TP has been proved to be an efficient way to enhance the performance of asphalt binders and asphalt mixtures, respectively. Based on chemical composition analysis, the colloidal structure of the asphalt binder remains as a sol-gel type with TP [30]. From the study [30], the OAC of the three different modified asphalt mixtures with TP dosages of 14%, 17%, and 20% were 5.45%, 5.53% and 5.60% respectively.…”

Section: Literature Review and Study Motivationmentioning

confidence: 99%

“…Based on chemical composition analysis, the colloidal structure of the asphalt binder remains as a sol-gel type with TP [30]. From the study [30], the OAC of the three different modified asphalt mixtures with TP dosages of 14%, 17%, and 20% were 5.45%, 5.53% and 5.60% respectively. Hu et al [31] observed the aging properties of the modified asphalt binder with TP after the thin film oven test (RTFOT).…”

Section: Literature Review and Study Motivationmentioning

confidence: 99%

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Enhancing the Functional and Environmental Properties of Asphalt Binders and Asphalt Mixtures Using Tourmaline Anion Powder Modification

Zhang

Zhou

Xu³

et al. 2021

Coatings

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Due to its good piezoelectric and thermoelectrical properties, tourmaline anion powder (TAP) can be used as a potential modifier to improve the piezoelectric, thermoelectric, rheological, and mechanical properties of asphalt binders and asphalt mixtures, respectively. This study was conducted to investigate the functional, piezoelectric, and thermoelectric properties of a TAP-modified asphalt binder (TAPMA) and the corresponding asphalt mixtures. In the study, the TAPMA’s environmental friendliness, such as the volatile organic compound (VOC) adsorption and metal immobilization, were investigated. Compared to TAP at 3.95 pC/N, the piezoelectric constant of TAPMA was found to be 3.42 pC/N. In general, the results indicated that TAP could potentially improve the functional properties of asphalt binders and asphalt mixtures, including the piezoelectric and thermoelectrical properties. With respect to environmental enhancement, the asphalt binder VOC emission reduced to 50% after TAP addition. In terms of metal immobilization, the heavy metals Fe and Ti exhibited the best stability followed by the alkali metals Li, K and Na, and lastly, Ca and Mg, respectively. Nonetheless, the emission concentrations of all the metals were below the regulatory threshold. Furthermore, the study findings also indicated that TAPMA can potentially adsorb the tail gas emissions of vehicles and heavy metals.

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Section: Literature Review and Study Motivationmentioning

confidence: 99%

Section: Literature Review and Study Motivationmentioning

confidence: 99%

Enhancing the Functional and Environmental Properties of Asphalt Binders and Asphalt Mixtures Using Tourmaline Anion Powder Modification

Zhang

Zhou

Xu³

et al. 2021

Coatings

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“…Based on the aforementioned principle, Mckinley et al [15], Navid and Pilon [16], and Nguyen et al [17] used TAP for absorbing waste heat. Although Wang et al [18][19][20][21][22] have conducted detailed studies with respect to the usage of TAP as a construction material, it is not widely used in highway construction at present. TAP is used as an inorganic asphalt modifier to prepare modified asphalt that exhibits flame-retardant and smoke-suppression properties.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of an Active Cooling Antirutting Asphalt Mixture

Shuan

Li²,

Xu³

et al. 2020

Advances in Materials Science and Engineering

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To reduce the temperature of asphalt pavements in summer and improve their high-temperature stability, tourmaline anion powder (TAP) was used as a modifier to prepare modified asphalt, which actively cools the pavement. The effects of different TAP contents on the high- and low-temperature performance of modified asphalt and its pavement cooling performance were studied based on the dynamic shear rheometer, low-temperature bending beam rheometer, and indoor rutting plate temperature difference tests; subsequently, the optimum TAP content was determined. Modified asphalt was used to prepare an active cooling antirutting asphalt mixture, and its pavement cooling performance was verified via outdoor lighting tests. High- and low-temperature dynamic modulus and low-temperature semicircular splitting tests were used to evaluate the high- and low-temperature performance; further, freeze-thaw splitting and immersion Marshall tests were performed to evaluate the water stability of the active cooling antirutting asphalt mixture. The results denote that TAP is useful for improving the rutting factor of asphalt. When the TAP content is 16% of the asphalt material, the maximum cooling value of the surface in laboratory tests becomes 5.9°C. When compared with an ordinary asphalt mixture, the dynamic stability of the active cooling antirutting asphalt mixture at medium and high temperatures increased by 18%–22%. The fracture energy can be increased by 12% at low temperatures. The maximum cooling value of the surfaces in outdoor tests is 7.2°C, and the water stability slightly decreases; however, it still satisfies the specification requirements.

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“…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].…”

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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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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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Research on Proportioning Design of Tourmaline Modified Asphalt Mixture

Cited by 3 publications

References 5 publications

Enhancing the Functional and Environmental Properties of Asphalt Binders and Asphalt Mixtures Using Tourmaline Anion Powder Modification

Enhancing the Functional and Environmental Properties of Asphalt Binders and Asphalt Mixtures Using Tourmaline Anion Powder Modification

Preparation and Properties of an Active Cooling Antirutting Asphalt Mixture

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

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