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Chaochao Liu
National Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science & Technology, 410004 Hunan, China

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Review
Published: 28 June 2020 in Construction and Building Materials
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This article presented the latest development of testing methods concerning surface textures and skid resistance of asphalt pavements. A review of the repeatability and harmonization of field-testing methods for macrotexture is outlined. Measuring methods of skid resistance both in lab and in situ are reviewed. The harmonization research on the laboratory and field-testing methods are summarized. The recent progress of skid-resistance modeling of asphalt pavement from well-known research work is summarized. This article also suggests a few key research directions. First, compared with macrotexture, standard testing procedures for microtexture also need to be established for uniform and comparable characterization methods. Second, the gap between lab test and field test for skid resistance should be bridged to realize more accurate estimation of pavement frictional properties in the phase of lab design. There is the need for the International Friction Index (IFI) model to be reevaluated when the data is acquired from testers installed with ribbed tires. Third, the accurate tire modeling of the dynamically frictional contact between tire and pavement still needs to be improved. The parameters of pavement textures, traffic volume, water, hydroplaning, temperature, and friction law on tire-pavement friction should be considered in depth in the modeling aspect.

ACS Style

Miao Yu; Zhanping You; Guoxiong Wu; Lingyun Kong; Chaochao Liu; Junfeng Gao. Measurement and modeling of skid resistance of asphalt pavement: A review. Construction and Building Materials 2020, 260, 119878 .

AMA Style

Miao Yu, Zhanping You, Guoxiong Wu, Lingyun Kong, Chaochao Liu, Junfeng Gao. Measurement and modeling of skid resistance of asphalt pavement: A review. Construction and Building Materials. 2020; 260 ():119878.

Chicago/Turabian Style

Miao Yu; Zhanping You; Guoxiong Wu; Lingyun Kong; Chaochao Liu; Junfeng Gao. 2020. "Measurement and modeling of skid resistance of asphalt pavement: A review." Construction and Building Materials 260, no. : 119878.

Journal article
Published: 28 April 2020 in Applied Sciences
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In this paper, two types of Styrene-Butadiene-Rubber (SBR) were adopted to modify the Buton-rock asphalt (BRA) modified asphalt, aiming to select a binder with excellent comprehensive performances. Powder SBR and latex SBR (0%, 2%, 4%, 6%, and 8%), were mixed with the 15 w% BRA modified asphalt. The characterization of rheological properties included dynamic shear rheometer, rotational viscometer, and bending beam rheometer test. The short-term aging performance was characterized by the ratio of the complex shear modulus from the un-aged and rolling thin film oven (RTFOT) -aged asphalt. Besides, Fourier transform infrared spectroscopy and scanning electron microscopy were conducted to reveal the modification mechanism. It was observed that the two kinds of BRA-SBR modified asphalt had preferable anti-crack capacity at low temperatures than the BRA modified asphalt. Compared with latex SBR, the powder SBR significantly improved the high-temperature performance, and the anti-aging capacity was stable. However, some negative influence occurred by the addition of latex SBR on the anti-rutting and short-term aging property. According to the micro-mechanism analysis, adding powder SBR and latex SBR into BRA modified asphalt was a physical blending process, and they improved the dispersion state of BRA in asphalt. Based on the comprehensive performance, the recommended combination was BRA and powder SBR.

ACS Style

Fangting Qu; Songtao Lv; Junfeng Gao; Chaochao Liu. Performance and Mechanism of Asphalt Modified by Buton-Rock Asphalt and Different Types of Styrene-Butadiene-Rubber. Applied Sciences 2020, 10, 3077 .

AMA Style

Fangting Qu, Songtao Lv, Junfeng Gao, Chaochao Liu. Performance and Mechanism of Asphalt Modified by Buton-Rock Asphalt and Different Types of Styrene-Butadiene-Rubber. Applied Sciences. 2020; 10 (9):3077.

Chicago/Turabian Style

Fangting Qu; Songtao Lv; Junfeng Gao; Chaochao Liu. 2020. "Performance and Mechanism of Asphalt Modified by Buton-Rock Asphalt and Different Types of Styrene-Butadiene-Rubber." Applied Sciences 10, no. 9: 3077.

Journal article
Published: 15 February 2020 in Journal of Cleaner Production
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In order to improve the aging resistance of bio-asphalt, the Buton-rock asphalt (BRA) was selected to modify bio-asphalt. The rheological and Micro-property tests were performed on four types of BRA modified bio-asphalt under different aging degrees. The bio-asphalt with 5% contents of bio-oil was prepared as the base binder. The BRA contents for the four types of BRA modified bio-asphalt were 5%, 10%, 15%, and 20% by weight of the base binder. A series of rheological property tests were performed on BRA modified bio-asphalt with unaged or aged by rolling thin film oven test (RTFOT), or pressure aging vessel (PAV) test for 5 h, 15 h, or 20 h, respectively. The dynamic shear rheometer (DSR) was utilized to reveal the sensitivity of high-temperature properties to aging, including temperature sweep (TS) test at 60 °C and multiple stress creep recovery (MSCR) test at 58 °C. The deterioration of low-temperature performance was demonstrated by the bending beam rheometer (BBR). The effects of aging on the microstructures of the binders were investigated by scanning electron microscopy (SEM). The results show that the BRA improves the high-temperature performance of bio-asphalt, and the higher the content of BRA, the more remarkable the increase is. The BRA modified bio-asphalt is generally more sensitive to aging compared to neat asphalt. The high-temperature properties of BRA modified bio-asphalt with 20% BRA content is equivalent to neat asphalt. The bio-oil greatly improves the low-temperature rheological properties of BRA modified asphalt. The BRA improves the sensitivity of bio-asphalt to aging under low-temperature conditions. The suggested optimal content range of BRA is 15%–20%. The micro-surface of the BRA modified bio-asphalt is flat and has no void structure, crack-free and silver streaks appear after aging. The developed BRA modified bio-asphalt can meet the technical requirements of highway engineering and has outstanding aging resistance. The use of BRA and bio-oil can reduce the consumption of petroleum asphalt, dramatically reduce the cost of materials, and produce exceptional ecological benefits.

ACS Style

Songtao Lv; Xinghai Peng; Chaochao Liu; Fangting Qu; Xuan Zhu; Weiwei Tian; Jianlong Zheng. Aging resistance evaluation of asphalt modified by Buton-rock asphalt and bio-oil based on the rheological and microscopic characteristics. Journal of Cleaner Production 2020, 257, 120589 .

AMA Style

Songtao Lv, Xinghai Peng, Chaochao Liu, Fangting Qu, Xuan Zhu, Weiwei Tian, Jianlong Zheng. Aging resistance evaluation of asphalt modified by Buton-rock asphalt and bio-oil based on the rheological and microscopic characteristics. Journal of Cleaner Production. 2020; 257 ():120589.

Chicago/Turabian Style

Songtao Lv; Xinghai Peng; Chaochao Liu; Fangting Qu; Xuan Zhu; Weiwei Tian; Jianlong Zheng. 2020. "Aging resistance evaluation of asphalt modified by Buton-rock asphalt and bio-oil based on the rheological and microscopic characteristics." Journal of Cleaner Production 257, no. : 120589.

Journal article
Published: 27 September 2019 in Construction and Building Materials
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The objective of this study was to introduce lignin as a bio-additive to modify the base asphalt and investigate the high-temperature rheological performances of lignin modified asphalts and virgin asphalt. In this study, asphalt PG 58-28 was selected as the virgin asphalt, and four contents, 2%, 4%, 6% and 8%, of the total binder by weight of lignin were incorporated in the base binder. Rotational viscosity (RV), dynamic shear rheometer (DSR), and multiple stress creep recovery (MSCR) tests were conducted to characterize the rheological performances of different types of asphalts. Linear amplitude sweep (LAS) test was employed to evaluate the fatigue performance. The results showed that the incorporation of lignin increased the viscosity of virgin asphalt at different rotational speeds. The activation energy showed an increasing trend as the lignin increased compared with the virgin asphalt. Meanwhile, the lignin incorporated into the asphalt binder increased the elastic components, and improved the resistance of asphalt binder to the permanent deformation regardless of the lignin contents. The addition of lignin in the asphalt binder could retard oxidation reactions that occurred in the asphalt during the rolling thin film oven aging. In addition, the incorporation of lignin may degrade the fatigue life of asphalt. However, when the content of lignin was less than 8%, the reduction was small. This study could provide a prospective foundation for the utilization of lignin extracted from waste biomass as an exceptional and renewable bio-additive in the field of asphalt pavement engineering.

ACS Style

Junfeng Gao; Hainian Wang; Chaochao Liu; Dongdong Ge; Zhanping You; Miao Yu. High-temperature rheological behavior and fatigue performance of lignin modified asphalt binder. Construction and Building Materials 2019, 230, 117063 .

AMA Style

Junfeng Gao, Hainian Wang, Chaochao Liu, Dongdong Ge, Zhanping You, Miao Yu. High-temperature rheological behavior and fatigue performance of lignin modified asphalt binder. Construction and Building Materials. 2019; 230 ():117063.

Chicago/Turabian Style

Junfeng Gao; Hainian Wang; Chaochao Liu; Dongdong Ge; Zhanping You; Miao Yu. 2019. "High-temperature rheological behavior and fatigue performance of lignin modified asphalt binder." Construction and Building Materials 230, no. : 117063.

Journal article
Published: 18 May 2018 in KSCE Journal of Civil Engineering
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In order to reveal the effects of aging on fatigue damage evolution pattern of asphalt mixture, and to reveal the fatigue damage patterns of asphalt pavement during its service life more accurately, the viscoelastic fatigue damage model for the aged asphalt mixtures was proposed based on the Burgers viscoelastic model. The dissipation energy was taken as the damage variable, and the direct tension fatigue tests for asphalt mixture in five different aging degrees were conducted. The viscoelastic parameters of the aged asphalt mixtures were obtained.The calculationmethod of the cumulative fatigue damage was proposed, which considers the aging effects. Moreover, the critical fatigue damage degree and fatigue life calculation equations were derived by employing the fatigue damage model, which were calculated and compared. The calculation errors range from 3% to 18%, which was within an acceptable error range of 30%. The research results show that the aging has a prominent impact on fatigue properties of asphalt mixtures, which could be illustrated by the change of the parameters of the viscoelastic fatigue damage model for the aged asphalt mixtures. The prediction precision of fatigue life is acceptable for using the proposed viscoelastic fatigue damage model.

ACS Style

Songtao Lv; Chaochao Liu; Jianlong Zheng; Zhanping You; Lingyun You. Viscoelastic Fatigue Damage Properties of Asphalt Mixture with Different Aging Degrees. KSCE Journal of Civil Engineering 2018, 22, 2073 -2081.

AMA Style

Songtao Lv, Chaochao Liu, Jianlong Zheng, Zhanping You, Lingyun You. Viscoelastic Fatigue Damage Properties of Asphalt Mixture with Different Aging Degrees. KSCE Journal of Civil Engineering. 2018; 22 (6):2073-2081.

Chicago/Turabian Style

Songtao Lv; Chaochao Liu; Jianlong Zheng; Zhanping You; Lingyun You. 2018. "Viscoelastic Fatigue Damage Properties of Asphalt Mixture with Different Aging Degrees." KSCE Journal of Civil Engineering 22, no. 6: 2073-2081.

Journal article
Published: 29 April 2018 in Applied Sciences
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The objective of this article is to establish a fatigue equation based on the true stress ratio for cement-treated aggregate base materials. The true stress ratio herein means the ratio of the stress and the true strength of the cement-treated aggregate base materials related to loading rates and curing times. The unconfined compressive strength tests and compressive resilience modulus tests were carried out under various loading rates and curing times of 3, 7, 14, 28, 60, 90 days, respectively. According to the test results, the relationship between the unconfined compressive strength (a mix design parameter in China) and the compressive resilience modulus (a structural design parameter and the construction quality control parameter in China) of the cement-treated aggregate base material with different curing times was established. However, it was found that the strengths varied with the loading rates, which is not reflected in the existing fatigue equations. Therefore, it is questionable to obtain the stress ratio of fatigue tests with a fixed strength value obtained from the standard strength test where the loading rate is fixed (in China, the fixed loading rate is 1 mm/min for cement-treated aggregate base materials). Thus, in this paper, the four-point bending strength (i.e., flexural strength) test was carried out at different loading rates to resolve such deficiencies. Based on the strength test results at different loading rates, the true stress ratio of the fatigue test corresponding to the fatigue loading rate can be calculated. Then the four-point bending fatigue test was conducted to establish an improved fatigue equation characterized by the true stress ratio. The results show that the patterns of variation for unconfined compressive strength increasing with the curing time were similar to that of the compressive resilience modulus. The fatigue equation curve based on the true stress ratio can be extended to the strength failure point of (1, 1), where both the true stress ratio and the fatigue life value are one. The internal relationship between the strength failure and the fatigue failure was unified. This article provides a theoretical method and basis for unifying the mix design parameters and the construction quality control parameters.

ACS Style

Songtao Lv; Chaochao Liu; Jingting Lan; Hongwei Zhang; Jianlong Zheng; Zhanping You. Fatigue Equation of Cement-Treated Aggregate Base Materials under a True Stress Ratio. Applied Sciences 2018, 8, 691 .

AMA Style

Songtao Lv, Chaochao Liu, Jingting Lan, Hongwei Zhang, Jianlong Zheng, Zhanping You. Fatigue Equation of Cement-Treated Aggregate Base Materials under a True Stress Ratio. Applied Sciences. 2018; 8 (5):691.

Chicago/Turabian Style

Songtao Lv; Chaochao Liu; Jingting Lan; Hongwei Zhang; Jianlong Zheng; Zhanping You. 2018. "Fatigue Equation of Cement-Treated Aggregate Base Materials under a True Stress Ratio." Applied Sciences 8, no. 5: 691.