Characteristics of asphalt binder and mixture containing nanosilica

Enieb, Mahmoud; Diab, Aboelkasim

doi:10.1016/j.ijprt.2016.11.009

Cited by 119 publications

(57 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The rotational viscosity (RV) test is conducted to examine the viscosity of asphalt at high temperature either at manufacturing or construction [27]. The RV is very important property during mixing because it indicates whether the asphalt binder is sufficiently fluid to be pumped through an asphalt plant or not [28].…”

Section: Rotational Viscosity (Rv)mentioning

confidence: 99%

The physical properties of bitumen modified with ilmenite and bentonite nanoparticles

2020

View full text Add to dashboard Cite

Using nanotechnology in asphalt paving has increased markedly to improve the asphalt characteristics and increase the road life, especially with the significant increase in traffic volumes. The present contribution evaluates the effects of ore nanoparticles namely ilmenite and bentonite on the engineering properties and performance of asphalt binder. The high-resolution transmission electron microscopy (HRTEM) micrograph was used to characterize the investigated nanomaterials. The nanoparticles were blended with asphalt binder with different percentages (0-5% for ilmenite and 0-10% for bentonite by weight of asphalt binder) to determine the appropriate mixing ratio that sustained the desired characteristics. Different tests were conducted to examine the properties of modified asphalt binder among which penetration, softening point, rotational viscosity, penetration index (PI) and ductility. The results of our study revealed an increase in softening point and rotational viscosity and decrease in binder penetration. Moreover, blending of variable amounts of nanomaterials with the asphalt binders has improved their physical properties compared with macroparticles blended and unmodified binders as indicated by the penetration index and ductility test. The most significant improvement in the modified binders was obtained by blending of 5% for two types of nanoparticles. Finally, the rut depth was measured by wheel track test for the modified asphalt mixture, with ilmenite and bentonite, to validate the obtained results. The results show that the engineering performance of asphalt produced from bitumen binder modified with nanoparticles is much better than conventional asphalt and such binder-modified asphalt is strongly recommended for use on site.

show abstract

Section: Rotational Viscosity (Rv)mentioning

confidence: 99%

The physical properties of bitumen modified with ilmenite and bentonite nanoparticles

2020

View full text Add to dashboard Cite

show abstract

“…Ref. [7] investigated the characteristics of asphalt binder and mixture containing nano-silica and found that the addition of nano-silica has a positive influence on different properties of the asphalt binder and mixture. Ref.…”

Section: Nanomaterials and Their Application As A Modifier In Asphaltmentioning

confidence: 99%

“…[6], the application of nanomaterials as asphalt modifiers is growing rapidly in popularity due to its unique characteristics that significantly improve the performance of asphalt binder. It has been shown in several studies that the addition of nano-silica in asphalt mixtures improve the oxidative aging property, increases resistance to the rutting effect, improves the rheological properties of asphalt mixture and decreases the interaction between asphalt molecules [7][8][9][10]. In addition, Ref.…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment for the Production Phase of Nano-Silica-Modified Asphalt Mixtures

2019

View full text Add to dashboard Cite

To combat the rutting effect and other distresses in asphalt concrete pavement, certain modifiers and additives have been developed to modify the asphalt mixture to improve its performance. Although few additives exist, nanomaterials have recently attracted significant attention from the pavement industry. Several experimental studies have shown that the use of nanomaterials to modify asphalt binder results in an improved oxidative aging property, increased resistance to the rutting effect, and improves the rheological properties of the asphalt mixture. However, despite the numerous benefits of using nanomaterials in asphalt binders and materials, there are various uncertainties regarding the environmental impacts of nano-modified asphalt mixtures (NMAM). Therefore, this study assessed a Nano-Silica-Modified Asphalt Mixtures in terms of materials production emissions through the Life Cycle Assessment methodology (LCA), and the results were compared to a conventional asphalt mixture to understand the impact contribution of nano-silica in asphalt mixtures. To be able to compare the relative significance of each impact category, the normalized score for each impact category was calculated using the impact scores and the normalization factors. The results showed that NMAM had a global warming potential of 7.44563 × 103 kg CO2-Eq per functional unit (FU) compared to 7.41900 × 103 kg CO2-Eq per functional unit of the conventional asphalt mixture. The application of LCA to NMAM has the potential to guide decision-makers on the selection of pavement modification additives to realize the benefits of using nanomaterials in pavements while avoiding potential environmental risks.

show abstract

“…In another study on the effect of nanomaterials on moisture damage of asphalt mixtures it was found that using these materials leads to the strength to moisture improvement and increased fatigue life [1]. Mahmoud Enieb and Aboelkasim [25] investigated the feasibility of using nanosilica in bituminous pavements from the perspective of asphalt binder and corresponding mixture characteristics. The result of their research showed the addition of nanosilica material has a positive influence on different properties of the asphalt binder and mixture and can be used to construct durable pavements, thereby reduce the life-cycle costs of the pavement.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Additionally, filler as one of the components of asphalt mixes can affect the two mentioned mechanisms, including adhesive failure and cohesive failure [9][10][11]. It is worth mentioning that over recent years and in line with the advent of nanotechnology, the importance of this issue has caused nanomaterials to be used to modify binder and asphalt mixtures properties by researchers [12][13][14]. Therefore, in this research unlike other researches that only mineral fillers are used to making asphalt mixtures, attempts have been made to investigate and comparing the effect of traditional mineral fillers and nanomaterials on the mechanical properties and durability of hot mix asphalts against moisture damage.…”

Section: Introductionmentioning

confidence: 99%

Comparing the Effect of Nanomaterial and Traditional Fillers on the Asphalt Mixture Properties

2019

View full text Add to dashboard Cite

Several parameters affect asphalt mix performance against loading and environmental conditions. Minor changes in the filler amount or type can cause obvious changes in the asphalt mixture properties. Accordingly, in this research attempts have been made to optimally make asphalt mixture strong against loading and environmental conditions by changing the type, size and percentage of filler used in asphalt mixture. In this line, the effect of two types of cement and nano-silica fillers in two different percentages was investigated and compared as an alternative for part of the main filler in asphalt mixture samples made by two types of limestone and granite aggregate. Cement filler by 2% and 4% of the aggregate mass as the alternative for part of the main filler is added to stone materials before mixing with binder, but nano-silica filler by 2% and4 % of weight of the binder as the alternative for part of the main filler is added to binder and a modified and homogeneous binder is produced using a high speed mixer. In the following, considering the optimum binder content for each mixture, resilient modulus tests were conducted to determine the strength performance against loading and indirect tensile strength ratio was used to determine moisture sensitivity of asphalt mixtures. Results obtained from resilient modulus tests show that the use of nano-silica and cement has been capable of favorably improving the resilient modulus of samples containing these two types of fillers. The improvement of the resilient modulus of samples containing nano-silica is very significant. Additionally, the studies conducted based on the indirect tensile strength ratio show that both types of alternative fillers, especially cement has been capable of desirably improve the strength of asphalt mixtures against moisture damage.

show abstract

Characteristics of asphalt binder and mixture containing nanosilica

Cited by 119 publications

References 22 publications

The physical properties of bitumen modified with ilmenite and bentonite nanoparticles

The physical properties of bitumen modified with ilmenite and bentonite nanoparticles

Life Cycle Assessment for the Production Phase of Nano-Silica-Modified Asphalt Mixtures

Comparing the Effect of Nanomaterial and Traditional Fillers on the Asphalt Mixture Properties

Contact Info

Product

Resources

About