Design and performance of high-toughness ultra-thin friction course in south China

Yu, Jianying; Chen, Fuda; Deng, Wen Jun; Ma, Youchun; Yu, Huayang

doi:10.1016/j.conbuildmat.2020.118508

Cited by 25 publications

(12 citation statements)

References 29 publications

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“…In addition, the coarse aggregate voids-filling method (CAVF) was adopted to design the gradation of bituminous mixtures, including base bitumen and nano-TiO 2 /CaCO 3 modified bitumen, and the gradation curve is illustrated in Figure 1 [ 42 ]. According to the specification JTG E20-2011, the optimum asphalt-aggregate ratios of base original bituminous concrete as well as nano-TiO 2 /CaCO 3 modified bituminous concrete were obtained by Marshall design method.…”

Section: Raw Materials and Experimental Methodsmentioning

confidence: 99%

Experimental Characterization of Viscoelastic Behaviors of Nano-TiO2/CaCO3 Modified Asphalt and Asphalt Mixture

Wu¹,

Li²,

Wang³

et al. 2021

Nanomaterials

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The purpose of this paper is to promote the application of nano-TiO2/CaCO3 in bituminous materials and present an experimental characterization of viscoelastic behaviors of bitumen and bituminous mixture modified by nano-TiO2/CaCO3. In this work, a series of viscoelastic behavior characterization tests were conducted, including dynamic shear rheometer (DSR) test for bitumen, uniaxial static compression creep test and dynamic modulus test for bituminous mixture. Moreover, various viscoelastic models with clear physical meanings were used to evaluate the influence of nano-TiO2/CaCO3 on the macroscopic performance of bitumen and bituminous mixture. The results show that bitumen and its mixtures are time-temperature dependent. The Christensen-Anderson-Marasteanu (CAM) model of frequency sweep based on DSR test indicated that adding nano-TiO2/CaCO3 can effectively capture the sensitivity of temperature. In addition, the incorporation of nano-TiO2/CaCO3 in bituminous mixture can significantly enhance the high-temperature anti-rutting, and slightly improve the low-temperature anti-cracking as well. At the same time, the modified Burgers model can accurately describe the viscoelastic behavior of bituminous mixtures in the first two creep stages, reflecting the consolidation effect of bituminous mixture. Also, the generalized Sigmoidal model can accurately grasp the characteristics of the relationship between dynamic modulus and reduced frequency and achieve good prediction effects in a wider frequency range.

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Section: Raw Materials and Experimental Methodsmentioning

confidence: 99%

Experimental Characterization of Viscoelastic Behaviors of Nano-TiO2/CaCO3 Modified Asphalt and Asphalt Mixture

Wu¹,

Li²,

Wang³

et al. 2021

Nanomaterials

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“…The GT-8 special binder (PG100 high-viscosity and high-elasticity modified bitumen, technical indicators see Table 1), which was the result of the research group's previous research [15], is used as the main raw material to prepare high-viscosity emulsified bitumen. The resulting high-viscosity emulsified bitumen has good elastic recovery and rutting resistance performance as well as superior dynamic viscosity.…”

Section: Methodsmentioning

confidence: 99%

“…It can efficiently improve the road surface smoothness, anti-skid performance, and noise reduction effect, as well as repair moderate to mild road diseases [5]. Since the introduction of very thin asphalt concrete (Bétons Bitumineux Trés Minces, BBTM) and ultra-thin asphalt concrete (Bétons Bitumineux Ultra Minces, BBUM) in France in the 1970s [6,7], countries around the world have been competing to develop and apply ultra-thin wear layer technology, including SMA10 in Germany [8], Novachip and OGFC in the United States [9][10][11][12], Lastika in Indonesia [13], VTHMAL in the United Kingdom [14], and GT Tech in China [15].…”

Section: Introductionmentioning

confidence: 99%

Design of Cold-Mixed High-Toughness Ultra-Thin Asphalt Layer towards Sustainable Pavement Construction

Yang

Chen

et al. 2021

Buildings

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Ultra-thin asphalt overlay has become the mainstream measure of road preventive maintenance due to its good economic benefits and road performance. However, hot mix asphalt concrete technology is widely used at present, which is not the most ideal way to promote energy saving and emission reduction in the field of road maintenance. At the same time, the ultra-thin friction course based on cold mix technology, such as slurry seal layer, micro-surface, and other technologies, are still far behind the hot mix friction course in terms of crack resistance. In this research, by establishing an integrated design of materials and structures, a cold paving technology called “high-toughness cold-mixed ultra-thin pavement (HCUP)” is proposed. The high-viscosity emulsified bitumen prepared by using high-viscosity and high-elasticity modified bitumen is used as the binder and sticky layer of HCUP. The thickness of HCUP is 0.8–2.0 cm, the typical thickness is 1.2 cm, and the nominal maximum size of the coarse aggregate is 8 mm. Indoor tests show that HCUP-8 has water stability, anti-skid performance, high temperature performance, peeling resistance, and crack resistance that are not weaker than traditional hot-mixed ultra-thin wear layers such as AC-10, Novachip, and GT-8. At the same time, the test road paving further proved that HCUP-8 has excellent road performance with a view to providing new ideas for low-carbon and environmentally friendly road materials.

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“…High-viscosity asphalt binder and HUFC-8 gradation were selected to test the laboratory performance of the HUFC asphalt mixture. The results showed that the HUFC asphalt mixture had excellent mechanical properties and skid resistance, and the paving technology had the potential to be applied on a large scale [ 18 ]. Cui et al developed an ultra-thin wear course (UTWC) asphalt mixture and compared it with a conventional asphalt mixture.…”

Section: Introductionmentioning

confidence: 99%

Laboratory and Field Performance Evaluation of High-Workability Ultra-Thin Asphalt Overlays

et al. 2022

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The defects of poor workability and inadequate pavement performance of the ultra-thin asphalt overlay limited its application in the preventive maintenance of pavements. In this study, a high-workability ultra-thin (HWU) asphalt overlay scheme was proposed. A high-strength-modified asphalt binder and an optimized HWU-10 gradation were used to prepare the HWU asphalt mixture and explore its laboratory performance. Furthermore, the HWU asphalt mixture was used for the test road paving. Based on the field performance test results before and after the test road for one year of traffic operation, the application performance of the HWU asphalt mixture and styrene-butadiene-styrene (SBS)-modified asphalt mixture was compared and analyzed. The results showed that the HWU asphalt mixture possessed satisfactory laboratory pavement performance, and its high-temperature stability and moisture damage resistance were better than those of the SBS-modified asphalt mixture. The asphalt mixture prepared using HWU-10 gradation was easily compacted and showed good workability. After one year of operation, all field performance of the ultra-thin overlay paved with HWU asphalt mixture met the specification requirements, but its flatness and skid resistance decreased. It is worth mentioning that the HWU asphalt mixture was significantly better than the SBS-modified asphalt mixture in terms of performance degradation resistance and rutting resistance. The studies to enhance the road intersection pavement performance and ensure the homogeneous dispersion of polyester fibers in the asphalt mixture will be considered in the future.

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Design and performance of high-toughness ultra-thin friction course in south China

Cited by 25 publications

References 29 publications

Experimental Characterization of Viscoelastic Behaviors of Nano-TiO2/CaCO3 Modified Asphalt and Asphalt Mixture

Experimental Characterization of Viscoelastic Behaviors of Nano-TiO2/CaCO3 Modified Asphalt and Asphalt Mixture

Design of Cold-Mixed High-Toughness Ultra-Thin Asphalt Layer towards Sustainable Pavement Construction

Laboratory and Field Performance Evaluation of High-Workability Ultra-Thin Asphalt Overlays

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