Effect of used motor oil as a rejuvenator on crumb rubber modifier’s released components to asphalt binder

Deef-Allah, Eslam; Abdelrahman, Magdy

doi:10.1177/1477760620918600

Cited by 10 publications

(7 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The high percentage of ECR, 20% by the weight of the total binder, decreased the low aromatic fractions in the asphalt binder. The rubber particles absorbed the low-molecular-weight components in the asphalt binders during the swelling process, then the rubber particles released the polymeric components in the asphalt binder's matrix [38,43]. These polymeric components increased the binders' stiffnesses and elasticities, which agreed with the MSCR test results.…”

Section: Thermal Analysis Results For Asphalt Binderssupporting

confidence: 79%

“…on increasing the stiffnesses and elasticities of EABs. The rubber particles released polymeric components in the asphalt binder's matrix [38,43], which increased the stiffnesses and elasticities of asphalt binders. These findings were proved in the Thermal Analysis Results for ECR Section (Section 3.3.2).…”

Section: Frequency Sweep Test Resultsmentioning

confidence: 99%

“…The ECR's components were investigated using TGA before, originally received, and after the extraction process from lab mixes. The rubber components investigated by other researchers [38,[43][44][45] were the oily components, natural rubber (NR), synthetic rubber (SR), and filler. Two peaks were observed in the DTG for the originally received ECR, note Figure 15a.…”

Section: Thermal Analysis Results For Ecrmentioning

confidence: 99%

See 2 more Smart Citations

Interactions between RAP and virgin asphalt binders in field, plant, and lab mixes

Deef-Allah¹,

Abdelrahman²

2022

World J. Adv. Res. Rev.

View full text Add to dashboard Cite

Reclaimed asphalt pavement (RAP) has been used in asphalt mixes for several years in the United States. However, the interactions between the RAP binder and the virgin asphalt binder (VAB) need further investigations. Thus, the main objective of this study was to explore the rheological and chemical properties of extracted asphalt binders (EABs) from plant, field, and lab mixes. The plant mixes were collected from behind the paver, reheated to the compaction temperature, and compacted in the lab. The field mixes were collected as cores within two weeks after the end of the construction process. The lab mixes were fabricated in the lab using the same materials used in the plant and field mixes. The mixes contained high asphalt binder replacement percentages by RAP, which were greater than 30%. The EABs were treated as rolling thin film oven aged VABs (RTFO AVABs). The rheological properties of EABs and RTFO AVABs were analyzed using temperature sweep, frequency sweep, and multiple stress creep recovery tests. Chemical investigations of EABs and RTFO AVABs were carried out using Fourier transform infrared spectroscopy and thermogravimetric analysis. The EABs from plant or lab mixes showed higher stiffnesses than EABs from field mixes. This occurred because of the extra heating that was implemented for the plant mixes before the compaction in the lab, which caused more interactions between the RAP binder and VABs. The fabrication mechanism, mixing and short-term aging processes, used in lab mixes caused more interactions between RAP binder and VABs than in the field mixes.

show abstract

Section: Thermal Analysis Results For Asphalt Binderssupporting

confidence: 79%

Section: Frequency Sweep Test Resultsmentioning

confidence: 99%

Section: Thermal Analysis Results For Ecrmentioning

confidence: 99%

See 1 more Smart Citation

Interactions between RAP and virgin asphalt binders in field, plant, and lab mixes

Deef-Allah¹,

Abdelrahman²

2022

World J. Adv. Res. Rev.

View full text Add to dashboard Cite

show abstract

“…Figure 11 indicates that the peak corresponding to the stretching vibration of CCH of hydrogen on the CC double bond and that of CC in oleylamine at 3005 cm −1 and that of CC at 1570 cm −1 both disappeared after mixing with the matrix asphalt 42,43 . After mixing with oleylamine, the CH on the aromatic ring in the matrix asphalt disappeared at 3055 cm −1 44 . In addition, the aromatic ring substitution peak at 900–670 cm −1 45 in the matrix asphalt also changed, thus indicating that the CC in the oleylamine will undergo further substitution reaction with the CH on the aromatic ring in the asphalt.…”

Section: Resultsmentioning

confidence: 99%

Preparation and properties evaluation of shape memory epoxy asphalt composites with high toughness and damping

Zhang

Huang

Zhang

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

Shape memory materials have received great scientific attention for engineering applications because of their unique memory recoverable properties. In this study, high toughness and strong damping shape memory epoxy asphalt composites (SMEAC) were prepared, which can be widely used in the fields of bridge self-repairing expansion joints, crack sealants, vibration control, and damping devices in earthquake engineering. The mechanical properties, shape memory properties, and shape memory mechanism of SMEAC were analyzed by macroscopic and microscopic tests. The direct tensile tests showed that SMEAC has excellent toughness and strength. The temperature sweep test revealed that SMEAC has good damping properties. The shape memory recovery performance of SMEAC was analyzed by thermomechanical analyzer, and X-ray diffraction showed the change of full width at half maxima in SMEAC before and after deformation at microscopic level. Infrared spectroscopy and fluorescence microscopy indicated that the asphalt phase in SMEAC could participate in the curing reaction, which enhanced the miscibility between the asphalt phase and the epoxy resin phase. Finally, the curing mechanism of epoxy asphalt composites was derived by combining infrared spectral analysis.This work provides a theoretical reference for developing new shape memory materials and open up a new application mode for epoxy asphalt.

show abstract

“…Thermal characteristics of asphalt binders are analyzed by thermogravimetric analysis (TGA) by monitoring changes in thermograph (TG) parameters and derivative of thermograph (DTG) shapes [8][9][10][11]. TG re ects the relationship between temperature and mass loss, and DTG explicates the relationship between temperature and decomposition rate [12][13][14]. TG parameters are the onset temperature (T onset ), the endset temperature (T endset ), and the percentage of residue (%R) or char [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Thermal, Chemical and Rheological Properties of Asphalt Binders Extracted from Field Cores

Deef-Allah

Abdelrahman

2022

Preprint

Self Cite

View full text Add to dashboard Cite

Asphalt binders were extracted and recovered from field cores that were collected from different routes. These cores were for asphalt mixes containing virgin asphalt binders (VABs) with different performance grades (PGs) and different asphalt binder (ABR) replacement percentages by reclaimed asphalt pavement (RAP) and/or recycled asphalt shingles (RAS). These mixes had ages between 4 and 14 years during the sampling process, thus the extracted asphalt binders (EABs) were treated as long-term aged binders. Using RAP/RAS in asphalt mixes alters the performance of EABs at intermediate temperatures. Thus, the resistance of EABs to fatigue cracking was explored through rheological testing that included Superpave fatigue cracking parameter (|G*|.sinδ) and the number of load repetitions to failure (Nf). Thermal properties of EABs were evaluated using thermogravimetric analysis; different parameters were evaluated from the thermal analysis [e.g., percentage of residue (%R) and onset temperature (Tonset)]. The chemical properties of EABs were examined by a Fourier transform infrared (FTIR) spectroscopy through evaluating carbonyl (ICO), sulfoxide (ISO), aromatic (ICC), and aliphatic (ICH) indices. The relationships between the resistance of EABs to fatigue cracking, thermal and chemical properties were scrutinized. Ages of mixes, ABR percentage by RAP/RAS, and PGs of VABs controlled the resistance of EABs to fatigue cracking. Direct relationships were observed between |G*|.sinδ and %R, ISO and Nf, ICH and Nf, ICO and %R, and ICC and %R. Inverse relationships were found between Nf and Tonset, Nf and %R, Nf and ICO, Nf and ICC, %R and ISO, and %R and ICH.

show abstract

Effect of used motor oil as a rejuvenator on crumb rubber modifier’s released components to asphalt binder

Cited by 10 publications

References 28 publications

Interactions between RAP and virgin asphalt binders in field, plant, and lab mixes

Interactions between RAP and virgin asphalt binders in field, plant, and lab mixes

Preparation and properties evaluation of shape memory epoxy asphalt composites with high toughness and damping

Thermal, Chemical and Rheological Properties of Asphalt Binders Extracted from Field Cores

Contact Info

Product

Resources

About