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Wentong Huang
School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China

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Journal article
Published: 07 March 2021 in Materials
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The construction of sponge city is a major green innovation to implement the concept of sustainable development. In this study, the road performance of permeable asphalt concrete (PAC), which displays pronounced water permeability and noise reduction that are favorable for sponge cities, has been improved with a two-fold modification using styrene–butadiene–styrene (SBS) and crumb rubber (CR). Four percent SBS and three different ratios (10%, 15%, and 20%) of CR have been used to modify the virgin asphalt binder. The Marshall design has been followed to produce PAC samples. To evaluate the asphalt binder performance, multiple-stress creep-recovery (MSCR) test, linear amplitude sweep (LAS) test, and engineering property test programs including softening point test, penetration test, and rotational viscosity test have been conducted. Freeze–thaw splitting test, Hamburg wheel-tracking test, resilient modulus test, and permeability coefficient test have been performed to evaluate the asphalt mixture performance. The test results show that the addition of SBS and CR reduces the permeability coefficient, but significantly improves the high temperature performance, fatigue performance, and rutting resistance as well as the resilient modulus. However, the optimum rubber content should not exceed 15%. Meanwhile, after adding CR and SBS modifier, the indirect tensile strength (ITS) and tensile strength ratio (TSR) increase. It indicates that the moisture stability and crack resistance have been improved by the composite modification effect.

ACS Style

Wentong Huang; Xiao Liu; ShaoWei Zhang; Yu Zheng; Qile Ding; Bin Tong. Performance-Guided Design of Permeable Asphalt Concrete with Modified Asphalt Binder Using Crumb Rubber and SBS Modifier for Sponge Cities. Materials 2021, 14, 1266 .

AMA Style

Wentong Huang, Xiao Liu, ShaoWei Zhang, Yu Zheng, Qile Ding, Bin Tong. Performance-Guided Design of Permeable Asphalt Concrete with Modified Asphalt Binder Using Crumb Rubber and SBS Modifier for Sponge Cities. Materials. 2021; 14 (5):1266.

Chicago/Turabian Style

Wentong Huang; Xiao Liu; ShaoWei Zhang; Yu Zheng; Qile Ding; Bin Tong. 2021. "Performance-Guided Design of Permeable Asphalt Concrete with Modified Asphalt Binder Using Crumb Rubber and SBS Modifier for Sponge Cities." Materials 14, no. 5: 1266.

Journal article
Published: 06 January 2021 in Construction and Building Materials
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In recent years, reclaimed asphalt pavement (RAP) is widely used in pavement construction because of its merits on both economic and environmental aspects. The use of RAP contributes to significant reduction on resource consumption, construction emission and the overall construction costs. To better utilize RAP, different rejuvenators are applied to soften the aged bitumen and enhance the blending efficiency between new and aged bitumen. Although the engineering performance of RAP mixtures has been well studied, the interaction among new bitumen, aged bitumen and rejuvenators still remains unclear. This study is conducted for rejuvenating mechanism investigation by chemical and rheological analyses. To achieve this goal, three typical rejuvenators (soft bitumen, warm mix surfactant, and bio-rejuvenator) were mixed with aged bitumen. Various tests including Dynamic Shear Rheometers (DSR), Fourier Transform Infrared (FTIR) spectroscopy and Gel Permeation Chromatography (GPC) were performed. It is found that all three rejuvenators exhibited certain effect on restoring rheological performance of aged bitumen. The softening effect of DAT and bio-rejuvenator were strongest when aged bitumen percentages were 30% and 80% respectively. The incorporation of appropriate percentage of aged bitumen improved the fatigue lives of rejuvenated bitumen. Soft bitumen exhibited the optimal performance on improving fatigue resistance of rejuvenated bitumen. Additionally, the alterations of functional group indices and molecular distribution can be considered as explanations for the regenerating effect of rejuvenators. Moreover, the sulfoxide index of FTIR and three GPC parameters can be used as reliable indicators to predict the rheological properties of rejuvenated bitumen.

ACS Style

Wentong Huang; Yunfei Guo; Yu Zheng; Qile Ding; Can Sun; Jiangmiao Yu; Minye Zhu; Huayang Yu. Chemical and rheological characteristics of rejuvenated bitumen with typical rejuvenators. Construction and Building Materials 2021, 273, 121525 .

AMA Style

Wentong Huang, Yunfei Guo, Yu Zheng, Qile Ding, Can Sun, Jiangmiao Yu, Minye Zhu, Huayang Yu. Chemical and rheological characteristics of rejuvenated bitumen with typical rejuvenators. Construction and Building Materials. 2021; 273 ():121525.

Chicago/Turabian Style

Wentong Huang; Yunfei Guo; Yu Zheng; Qile Ding; Can Sun; Jiangmiao Yu; Minye Zhu; Huayang Yu. 2021. "Chemical and rheological characteristics of rejuvenated bitumen with typical rejuvenators." Construction and Building Materials 273, no. : 121525.

Journal article
Published: 18 June 2020 in Construction and Building Materials
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The work aims at investigating on interface fracture properties and nonlinear fracture model between ECC and concrete under salt freeze-thaw cycles. Based on the interface nonlinear fracture mechanism, a three-parameter nonlinear fracture model was proposed to comprehensive and accurately reflect the degradation law of interface fracture properties under salt freeze-thaw cycles. The experimental results showed that the salt freeze-thaw erosion had a very negative effect on interface fracture properties. Moreover, the occurrence of interface fracture under salt freeze-thaw cycles was affected remarkably by ECC strength grade, and the higher ECC strength always leads to later occurrences of interface fracture. Regardless of cycles, the fracture propagation process of all specimens included three phases: initial crack, stable crack propagation, and instability failure. Moreover, the three phases all occurred at the interface, and the crack did not extend to ECC or concrete substrate. Meanwhile, the fibers bridging effect was very significant at the phases of crack stable propagation and instability failure. Only one kind of wedge-splitting load-crack mouth opening displacement (CMOD) curve was observed. As number of cycles increased, slope of rising section curve and ultimate wedge-splitting loads all gradually decreased, while the CMOD corresponding to ultimate splitting load had little change. The salt freeze-thaw erosion had a very negative effect on three fracture parameters. Moreover, the three fracture parameters all decreased continuously with the increasing number of cycles.

ACS Style

Xiaowei Wu; Jun Tian; Hongwei Ma; Yu Zheng; ShaoWei Hu; Wenwei Wang; Yinfei Du; Wentong Huang; Can Sun; Zhongfeng Zhu. Investigation on interface fracture properties and nonlinear fracture model between ECC and concrete subjected to salt freeze-thaw cycles. Construction and Building Materials 2020, 259, 119785 .

AMA Style

Xiaowei Wu, Jun Tian, Hongwei Ma, Yu Zheng, ShaoWei Hu, Wenwei Wang, Yinfei Du, Wentong Huang, Can Sun, Zhongfeng Zhu. Investigation on interface fracture properties and nonlinear fracture model between ECC and concrete subjected to salt freeze-thaw cycles. Construction and Building Materials. 2020; 259 ():119785.

Chicago/Turabian Style

Xiaowei Wu; Jun Tian; Hongwei Ma; Yu Zheng; ShaoWei Hu; Wenwei Wang; Yinfei Du; Wentong Huang; Can Sun; Zhongfeng Zhu. 2020. "Investigation on interface fracture properties and nonlinear fracture model between ECC and concrete subjected to salt freeze-thaw cycles." Construction and Building Materials 259, no. : 119785.

Journal article
Published: 12 March 2019 in Applied Sciences
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Previous studies have showed that rock asphalt (RA) or diatomite were used to modify the petroleum bitumen. This paper presents the findings from a study conducted to evaluate the potential impact of RA and diatomite on the rheological characteristics of bitumen composites. RA and diatomite with three different dosages were added into the petroleum bitumen: 18% RA, 13% RA+7% diatomite, and 16% RA+9% diatomite by weight. The rheological characteristics of the RA and diatomite modified bitumens were evaluated in this study. The tests conducted included temperature sweep and frequency sweep tests with a dynamic shear rheometer (DSR), a Brookfield rotation viscosity test, and a scanning electron microscope test. The research showed that the addition of RA and diatomite to petroleum bitumen considerably increased the apparent viscosity, dynamic shear modulus, and rutting resistance in bitumen specimens. However, the DSR test indicated a slight reduction in the fatigue performance of composites made of RA and diatomite modified bitumens. Overall, RA and diatomite are good modifiers for petroleum bitumen for a performance improvement.

ACS Style

Wentong Huang; Duanyi Wang; Peiyong He; Xiang Long; Bing Tong; Jun Tian; Peng Yu. Rheological Characteristics Evaluation of Bitumen Composites Containing Rock Asphalt and Diatomite. Applied Sciences 2019, 9, 1023 .

AMA Style

Wentong Huang, Duanyi Wang, Peiyong He, Xiang Long, Bing Tong, Jun Tian, Peng Yu. Rheological Characteristics Evaluation of Bitumen Composites Containing Rock Asphalt and Diatomite. Applied Sciences. 2019; 9 (5):1023.

Chicago/Turabian Style

Wentong Huang; Duanyi Wang; Peiyong He; Xiang Long; Bing Tong; Jun Tian; Peng Yu. 2019. "Rheological Characteristics Evaluation of Bitumen Composites Containing Rock Asphalt and Diatomite." Applied Sciences 9, no. 5: 1023.