The performance of asphalt binder with trichloroethylene: Improving the efficiency of using reclaimed asphalt pavement

Ge, Dongdong; You, Zhanping; Chen, Siyu; Liu, Chaochao; Gao, Junfeng; Lv, Songtao

doi:10.1016/j.jclepro.2019.05.164

Cited by 60 publications

(28 citation statements)

References 29 publications

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“…Creep compliance at low temperature was used to determine the cracking resistance for the asphalt mixture [ 32 , 33 ]. Creep compliance revealed low-temperature behavior and predicted the thermally induced cracking in asphalt pavement at low temperature in the U.S. [ 34 ]. The results for the pre-mist and post-mist CIR mixtures, are shown in Figure 11 .…”

Section: Resultsmentioning

confidence: 99%

Cold In-Place Recycling Asphalt Mixtures: Laboratory Performance and Preliminary M-E Design Analysis

You

Chen

et al. 2021

Materials

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Cold in-place recycling (CIR) asphalt mixtures are an attractive eco-friendly method for rehabilitating asphalt pavement. However, the on-site CIR asphalt mixture generally has a high air void because of the moisture content during construction, and the moisture susceptibility is vital for estimating the road service life. Therefore, the main purpose of this research is to characterize the effect of moisture on the high-temperature and low-temperature performance of a CIR asphalt mixture to predict CIR pavement distress based on a mechanistic–empirical (M-E) pavement design. Moisture conditioning was simulated by the moisture-induced stress tester (MIST). The moisture susceptibility performance of the CIR asphalt mixture (pre-mist and post-mist) was estimated by a dynamic modulus test and a disk-shaped compact tension (DCT) test. In addition, the standard solvent extraction test was used to obtain the reclaimed asphalt pavement (RAP) and CIR asphalt. Asphalt binder performance, including higher temperature and medium temperature performance, was evaluated by dynamic shear rheometer (DSR) equipment and low-temperature properties were estimated by the asphalt binder cracking device (ABCD). Then the predicted pavement distresses were estimated based on the pavement M-E design method. The experimental results revealed that (1) DCT and dynamic modulus tests are sensitive to moisture conditioning. The dynamic modulus decreased by 13% to 43% at various temperatures and frequencies, and the low-temperature cracking energy decreased by 20%. (2) RAP asphalt incorporated with asphalt emulsion decreased the high-temperature rutting resistance but improved the low-temperature anti-cracking and the fatigue life. The M-E design results showed that the RAP incorporated with asphalt emulsion reduced the international roughness index (IRI) and AC bottom-up fatigue predictions, while increasing the total rutting and AC rutting predictions. The moisture damage in the CIR pavement layer also did not significantly affect the predicted distress with low traffic volume. In summary, the implementation of CIR technology in the project improved low-temperature cracking and fatigue performance in the asphalt pavement. Meanwhile, the moisture damage of the CIR asphalt mixture accelerated high-temperature rutting and low-temperature cracking, but it may be acceptable when used for low-volume roads.

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Section: Resultsmentioning

confidence: 99%

Cold In-Place Recycling Asphalt Mixtures: Laboratory Performance and Preliminary M-E Design Analysis

You

Chen

et al. 2021

Materials

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“…(2) The stretching vibration appearing at 1053 cm −1 —which represented the ether bond in hemicellulose—declined after pretreatment, reflecting that degradation of semi-cellulose also occurred [ 25 ]. (3) The peaks near 1160 cm −1 and 1248 cm −1 , represented the C-O stretching of COOH and C-O vibration of the guaiacyl ring [ 40 ] and the peaks at 1430 cm −1 and 1513 cm −1 corresponded to the aromatic skeleton vibration [ 41 ]. The intensities of these absorption peaks decreased at different degrees after pretreatment, indicating that the pretreatment could partially break the linkages between the aromatic ring and the aromatic ring skeleton.…”

Section: Resultsmentioning

confidence: 99%

Biomethane Yield, Physicochemical Structures, and Microbial Community Characteristics of Corn Stover Pretreated by Urea Combined with Mild Temperature Hydrotherm

et al. 2021

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The corn stover (CS)’s compact structure makes it challenging for microorganisms to use in anaerobic digestion (AD). Therefore, improving CS biodegradability has become a key focus in AD studies. Methods are being targeted at the pretreatment of CS, combining advanced urea with mild temperature hydrotherm pretreatment to study its effect on promoting the AD process of CS. The biomethane yield, physicochemical structure, and microbial community characteristics were investigated. CS samples were assigned into groups differed by a range of pretreatment times (from 24 to 96 h) and set at a temperature of 50 °C with a 2% urea addition. Results revealed that the 72-h group obtained the highest biomethane yield of 205 mL/g VS−1, volatile solid (VS) and total solid (TS) removal rates of 69.3% and 47.7%, which were 36.7%, 25.3% and 27.5% higher than those of untreated one, respectively. After conducting several analyses, results confirmed the pretreatment as a method for altering CS microstructures benefits biomethane production. The most resounding differences between pretreated and untreated groups were observed within a microbial community, an integral factor for improved AD performance. This study serves to confirm that this specific pretreatment is an effective method for enhancing biomethane production in CS.

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“…The C=O band area increased slightly after short-term aging and improved significantly after long-term aging (Figure 11d). In order to quantitatively evaluate the influence of aging on the emulsified asphalt residue, we calculated the band area of C=O and S=O under different aging conditions on the basis of the upper limit and lower limit and the baseline [53]. The spectrum area calculation results for the C=O band are shown in Figure 12.…”

Section: Fourier Transform Infrared (Ftir) Testmentioning

confidence: 99%

Laboratory Evaluation of the Residue of Rubber-Modified Emulsified Asphalt

Zhou

Chen

et al. 2020

Sustainability

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Emulsified asphalt has been widely used in various surface treatment methods such as chip seal for low-volume road preservation. Using modified emulsified asphalt made it possible to use chip seal technology on medium- and even high-volume traffic pavements. The main objective of the study is to quantify the residue characteristics of rubber-modified emulsified asphalt and to assess the effectiveness of using crumb rubber to modify emulsified asphalt binder. The four emulsified asphalt residues used the distillation procedure. Then, the rheology characteristics of emulsified asphalt residue were evaluated. The Fourier transform infrared spectroscopy (FTIR) test analyzed the chemical change of emulsified asphalt during the aging procedure. The results indicate that the evaporation method cannot remove all the water in emulsified asphalt. The mass change during the rolling thin film oven (RTFO) process only represented the component change of emulsified asphalt binder residue. Both the high-temperature and low-temperature performance grade of the two emulsified asphalt binders with rubber were lower. The original asphalt binder adopted to emulsification had a crucial influence on the performance of emulsified asphalt. The rubber modification enhanced the property of the emulsified asphalt binder at low temperatures, and the improvement effect was enhanced as the rubber content in the emulsified asphalt was raised. The C=O band was more effective in quantifying the aging condition of the residue. The findings of this study may further advance the emulsified asphalt technology in pavement construction and maintenance.

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The performance of asphalt binder with trichloroethylene: Improving the efficiency of using reclaimed asphalt pavement

Cited by 60 publications

References 29 publications

Cold In-Place Recycling Asphalt Mixtures: Laboratory Performance and Preliminary M-E Design Analysis

Cold In-Place Recycling Asphalt Mixtures: Laboratory Performance and Preliminary M-E Design Analysis

Biomethane Yield, Physicochemical Structures, and Microbial Community Characteristics of Corn Stover Pretreated by Urea Combined with Mild Temperature Hydrotherm

Laboratory Evaluation of the Residue of Rubber-Modified Emulsified Asphalt

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