Performance analysis of nano modified bitumen and hot mix asphalt

Saltan, Mehmet; Terzi, Serdal; Karahançer, Şebnem

doi:10.1016/j.conbuildmat.2018.04.014

Cited by 51 publications

(20 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gong et al [34] showed that CNT increased the softening point and reduced the penetration of asphalt binder. Saltan et al [38] in their research showed that using CNT enhanced the asphalt performance in moisture sensitivity. Yoo et al [39] investigated the effect of 0.5% and 1% carbon fiber and 0.5% CNT on the characteristics of asphalt mixtures.…”

Section: Introductionmentioning

confidence: 99%

Improving the Moisture Sensitivity of Asphalt Mixtures by Simultaneous Modification of Asphalt Binder and Aggregates with Carbon Nanofiber and Carbon Nanotube

Nikookar

Movahhed

Ayoubinejad

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

Moisture sensitivity of asphalt mixtures may cause damage due to cohesion in asphalt binder membrane and adhesion between aggregate and asphalt binder that result in considerable damage to the pavements. Therefore, by determining the adhesion quality in a modified aggregate-asphalt binder system, one can choose the suitable material compositions to decrease the moisture sensitivity of mixtures. In this study, the effects of modified asphalt binder with carbon nanofiber and modified aggregates with carbon nanotube on the moisture sensitivity of asphalt mixtures were simultaneously explored. For investigating the moisture sensitivity, the indirect tensile strength test and surface free energy concept were implemented. The results of the indirect tensile strength test revealed that modification of asphalt binder and aggregates with carbon nanofiber and carbon nanotube, respectively, increased the indirect tensile strength and tensile strength ratio values of mixtures. The results of surface free energy indicated that using carbon nanofiber and carbon nanotube enhanced the adhesion free energy of the aggregate-asphalt binder system. Moreover, utilizing carbon nanofiber to modify asphalt binder enhanced the cohesion free energy values in the asphalt binder membrane. Also, carbon nanofiber and carbon nanotube brought detachment energy of the system toward zero, indicating less desire for the mixtures to be stripped. Generally, investigations performed by the two methods showed that covering aggregates by carbon nanotube as well as utilizing carbon nanofiber as an asphalt binder modifier had a positive impact on decreasing moisture sensitivity of asphalt mixtures.

show abstract

Section: Introductionmentioning

confidence: 99%

Improving the Moisture Sensitivity of Asphalt Mixtures by Simultaneous Modification of Asphalt Binder and Aggregates with Carbon Nanofiber and Carbon Nanotube

Nikookar

Movahhed

Ayoubinejad

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…Different sources, different dosages, and different blending methods of modified asphalt will affect the rheological properties and aging properties of asphalt [ 25 ]. Nano-SiO 2 presents a special silane tetrahedral structure known as agglomeration [ 26 , 27 ]. Generally, the high-temperature performance of nano-SiO 2 modified asphalt is better than base asphalt, and the high-temperature performance of modified asphalt is more excellent with the increase of nano-SiO 2 content.…”

Section: Introductionmentioning

confidence: 99%

Resistance to Ultraviolet Aging of Nano-SiO2 and Rubber Powder Compound Modified Asphalt

et al. 2020

View full text Add to dashboard Cite

Ultraviolet (UV) aging degrades the life span of asphalt pavement, nanomaterials used as modifiers exhibit good shielding function on UV light, but generally degrade the low-temperature property of asphalt, a compound modification was found to be a solution. In this study, nano-SiO2 and rubber powder were blended together with base asphalt to prepare compound modified asphalt. Compound modified asphalt with different blending dosages were subjected to UV light via a self-made UV aging simulation chamber. Basic performance tests and rheological tests were conducted including the UV aging influence. An optimum compound ratio was finally recommended based on the goal to remove the adverse effect of nano-SiO2 on the thermal cracking. Results show that the anti-UV aging property of asphalt is improved obviously due to the blocking function of nano-SiO2 and carbon black in rubber powder, and the enhancing effect of nano-SiO2 is found to be the most significant.

show abstract

“…These unique properties of nano-materials can provide a bridge between macroscopic materials and molecular structures to improve the mechanical, thermodynamic, and chemical properties of a material. Existing studies show that nano-materials can successfully modify asphalt binders to improve the pavement performance, especially the high-temperature performance [14][15][16][17][18][19][20][21][22][23][24][25]. Particularly, the effects from the nano-particles are more significant, owing to the much larger surface area per unit mass as a nanomaterial decreases in size.…”

Section: Introductionmentioning

confidence: 99%

Investigating the pavement performance and aging resistance of modified bio-asphalt with nano-particles

et al. 2020

View full text Add to dashboard Cite

Bio-asphalt binders have been proposed as replacements for traditional asphalt binders, owing to advantages such as environmental protection, low costs, and abundant resources. However, a limitation of bio-asphalt binders is that their high-temperature performance is not suitable for pavement construction. In recent years, nano-particles have been widely used to improve the pavement performance of asphalt binders, particularly the high-temperature performance. Thus, the nano-particles might also provide a positive modified effect on the high-temperature performance of bio-asphalt binders. Based on this, five types of nanoparticles including SiO 2 , CaCO 3 , TiO 2 , Fe 2 O 3 , and ZnO are selected for the preparation of modified bio-asphalt binders, using different dosages of nano-particles and bio-oil. The high-and low-temperature performances, aging resistance, workable performance, and water stability of the nano-modified bio-asphalt binders and mixtures are investigated. The results reveal that, the high-temperature performance and aging resistance of the nanomodified bio-asphalt binders and mixtures are improved at increased nano-particle dosages, whereas their low-temperature performance is slightly weakened. The effects of the nano-particles on the workable performance and water stability are insignificant.

show abstract

Performance analysis of nano modified bitumen and hot mix asphalt

Cited by 51 publications

References 5 publications

Improving the Moisture Sensitivity of Asphalt Mixtures by Simultaneous Modification of Asphalt Binder and Aggregates with Carbon Nanofiber and Carbon Nanotube

Improving the Moisture Sensitivity of Asphalt Mixtures by Simultaneous Modification of Asphalt Binder and Aggregates with Carbon Nanofiber and Carbon Nanotube

Resistance to Ultraviolet Aging of Nano-SiO2 and Rubber Powder Compound Modified Asphalt

Investigating the pavement performance and aging resistance of modified bio-asphalt with nano-particles

Contact Info

Product

Resources

About