Preparation and characterization of active rejuvenated SBS modified bitumen for the sustainable development of high-grade asphalt pavement

Cao, Zhilong; Chen, Meizhu; Yu, Jianying; Han, Xiaobin

doi:10.1016/j.jclepro.2020.123012

Cited by 46 publications

(29 citation statements)

References 40 publications

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“…The core of the GDC is "ecology". Global economic development and industrializa tion have generated ecological pressures, such as smog, water quality deterioration, and other ecological problems [29][30][31]. The concept of green development proposes to guide the transition of the economic development model from consumption type to economy type, from pollution type to clean type, and from high-carbon type to low-carbon cycle type.…”

Section: The Relationship Between Gdc and Product Production Processmentioning

confidence: 99%

Analysis and Evaluation of Energy Consumption and Carbon Emission Levels of Products Produced by Different Kinds of Equipment Based on Green Development Concept

et al. 2022

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Energy consumption and carbon emission levels in the production process constitute an important basis for the selection of production equipment. The energy consumption and carbon emission levels of the same product produced by different kinds equipment vary greatly from one tool to another. Unfortunately, traditional modes of selection only give qualitative results, so that it is difficult to provide a quantitative reference to enable enterprises to choose appropriate modes of production in the context of the green development concept (GDC). In order to solve this problem, a calculation method for multiple energy consumption and carbon-emission objectives for commodity production is proposed. The focus of this paper is to research the difference between the energy consumption and carbon emission levels of the same product produced by different kinds of equipment. The energy consumption and carbon emissions of different kinds of equipment can be calculated by gray wolf algorithm. The results show that the proposed method can calculate the optimal values of energy consumption and carbon emissions in the same kinds of products produced by different equipment, which can provide assistance for enterprises in choosing the production equipment that best conforms to the green development concept.

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Section: The Relationship Between Gdc and Product Production Processmentioning

confidence: 99%

Analysis and Evaluation of Energy Consumption and Carbon Emission Levels of Products Produced by Different Kinds of Equipment Based on Green Development Concept

et al. 2022

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“…39 In this part, the temperature and shear stress were set at 58 °C and 0.1 kPa, respectively. 20 The repeated creep and recovery test consists of 10 cycles, and each cycle includes 1 s creep procedure and 9 s recovery procedure. The schematic diagram of the repeated creep and recovery test is depicted in Figure 4.…”

Section: Preparation Of Smbmentioning

confidence: 99%

“…1,12,18 In addition, the study conducted by Cortizo et al 13 indicated that the main components of the SBS modifier after oxidative degradation are carboxylic acid and phenol. The research results from Xu et al 19 and Cao et al 20 showed that there are hydroxyl (-OH) and carboxyl (-COOH) terminal groups in the products after the degradation of SBS. Also, the mechanism of thermal-oxidative aging of linear SBS is depicted in Figure 1.…”

Section: ■ Introductionmentioning

confidence: 99%

Effects of Reactive Chain Extension Rejuvenation Systems on the Viscosity–Temperature Characteristics, Rheological Properties, and Morphology of Aged Styrene–Butadiene–Styrene-Modified Bitumen

Han

Mao

et al. 2021

ACS Sustainable Chem. Eng.

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In this study, the reactive chain extension rejuvenators (RCERs) and aromatic hydrocarbon oil (AHO) were applied to construct the reactive chain extension rejuvenation systems (RCERs-AHO), and the effect of RCERs-AHO on the viscosity–temperature characteristics, rheological properties, and morphology of aged styrene–butadiene–styrene (SBS)-modified bitumen (ASMB) was thoroughly studied. Meanwhile, the rejuvenation effect of RCERs-AHO and TDI/HDI-AHO (toluene-2, 4-diisocyanate/hexamethylene diisocyanate and AHO) on ASMB was compared. The results indicated that the RCERs-AHO were more effective in restoring the viscosity of ASMB compared with TDI/HDI-AHO. The critical temperatures of the rutting factor at G*/sinδ = 1.0 kPa of rejuvenated SBS-modified bitumen (RSMB) regenerated by RCERs-AHO were higher than those of RSMB rejuvenated by TDI/HDI-AHO, revealing that RCERs-AHO could better increase the high-temperature rutting resistance of RSMB. Also, the low-temperature cracking resistance of RSMB was obviously enhanced by RCERs-AHO in comparison with TDI/HDI-AHO. The results of the average recovery rate of RSMB revealed that RCERs-AHO could better enhance the deformation recovery ability of RSMB. In addition, fluorescence morphology images clearly indicated that RCERs-AHO could better reconstruct the cross-linking structures of aged SBS compared with TDI/HDI-AHO. The comprehensive analysis of the research results showed that RCERs-AHO could efficiently restore the performances of ASMB to the level of fresh SBS-modified bitumen, and the rejuvenation ability of RCERs-AHO was more obviously excellent than TDI/HDI-AHO.

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“…However, the constant part is modified with the neat asphalt, which causes the asphalt to soften at ambient temperature and increase the penetration [25]. the resin continues to decrease, and the asphaltene content gradually increases, which increases its stiffness and hardness [6,26,27]. Due to the reconstitution of colloidal structure in asphalt, the softening point of asphalt has been significantly improved.…”

Section: Penetration According Tomentioning

confidence: 99%

Study on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt

Wang¹,

Huang

Xin³

et al. 2021

Advances in Civil Engineering

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As a new type of pavement material, bioasphalt has received more and more attention. However, the high-temperature behavior of bioasphalt is poor after blending with asphalt binder. In order to solve this problem and facilitate the waste utilization and resource conservation, the corn stalk bioasphalt/PPA composite modified asphalt was proposed. The conventional performance tests and rheological tests were conducted to evaluate high-temperature and low-temperature behavior. Fourier transform infrared reflection (FTIR) test was undertaken to analyze the mechanism of modified asphalt. The results indicated that blended asphalt penetration and ductility gradually decrease with the PPA content increasing. The softening point and viscosity of the modified asphalt increased, which led to an improvement of blended asphalt’s rigidity. The PPA increased the rutting index of corn stalk bioasphalt/PPA composite modified asphalt. However, bioasphalt had a negative effect on its high-temperature performance. The corn stalk bioasphalt/PPA composite modified asphalt could meet the specification requirement at −18°C considering the creep rate and stiffness modulus, indicating it had outstanding crack resistance. When the PPA and bioasphalt respect to the weight of neat asphalt were 6%–8% and 10%–16%, respectively, the corn stalk bioasphalt/PPA composite modified asphalt performance was optimal. However, shear time and shear rate merely affected the proposed modified asphalt performance. The bioasphalt did not affect the chemical structure of asphalt. However, PPA generated new functional groups (P-O single bond, phosphate (RO)3P = O, and P=O double bond) causing a chemical modification in the asphalt binder. This study can provide a basis for applying bioasphalt, making road engineering more economical and environmentally friendly.

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Preparation and characterization of active rejuvenated SBS modified bitumen for the sustainable development of high-grade asphalt pavement

Cited by 46 publications

References 40 publications

Analysis and Evaluation of Energy Consumption and Carbon Emission Levels of Products Produced by Different Kinds of Equipment Based on Green Development Concept

Analysis and Evaluation of Energy Consumption and Carbon Emission Levels of Products Produced by Different Kinds of Equipment Based on Green Development Concept

Effects of Reactive Chain Extension Rejuvenation Systems on the Viscosity–Temperature Characteristics, Rheological Properties, and Morphology of Aged Styrene–Butadiene–Styrene-Modified Bitumen

Study on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt

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