A Review on The Exploration of Nanomaterials Application in Pavement Engineering (original) (raw)

Special Issue on Nano-Modified Asphalt Binders and Mixtures to Enhance Pavement Performance

Applied Sciences

This Special Issue is dedicated to the use of nanomaterials for the modification of asphalt binders to support the analysis of the relevant properties and to determine if the modification indicated a more efficient use of asphalt mixtures’ fabrication or their modification in the context of asphalt mixtures’ fabrication and the improvement (or lack thereof) of these last ones to constitute effective asphalt pavement layers [...]

Assessment of Nanomaterials Use in Asphalt

International Journal of Constructive Research in Civil Engineering (IJCRCE)

Abstract:This article reviews the advances of using nanomaterials in hot mix asphalt. Clay nanoparticles are raw materials used in the manufacture of asphalt. Adding nanoparticles such as nanoparticles, nanosilica and nanotubes to asphalt typically increases the viscosity of asphalt binders and improves the wear and tear resistance of asphalt mixtures. Using nanoclay as a second modifier in polymer modified asphalt can improve storage stability and aging resistance of polymer modified asphalt. Nanotechnology has gradually infiltrated the asphalt industry. It now appears that the magical effects of nanomaterials have been proposed to improve asphalt performance. To illustrate many prospective applications, researchers have undertaken a series of positive and effective measures in preparing modified asphalt to demonstrate the modification mechanism and improve the result of its performance. In this study, first, different nanomaterials used in asphalt modification are presented, and then the methods used in asphalt modification with these materials and finally the impact of nanomaterials on basic asphalt performance and modification mechanisms are discussed

Impact of Nano Materials on the Properties of Asphalt Cement

Eurasian Journal of Science and Engineering

Traditional pavement materials are difficult to meet the realistic specifications of current and future highway pavement design requirements. Crude oil refineries with different sizes and efficiencies produce Asphalt cements (rheological and physical) which sometimes need modifications according to the pavement type, environment condition and site requirements. The interest of researchers in nanotechnology applications, particularly in the field of pavement materials, has increased over the last decade. In the present research Aluminum Oxide (Al2O3) and Silica Oxide (Si2O3) were used as Nano material modifiers to investigate their effects on Asphalt cement properties. Three percentages (3, 5, and 7%) by weight from both of them were mixed with asphalt type 40/50 penetration grade obtained from Lanas/Erbil refinery. Rheological and physical properties were investigated for all samples in the laboratory. Results showed that both Nano (silica and alumina) decreased the penetration value by (5) percent and increase the ductility value and softening point temperature. Furthermore, rotational viscosity and stiffness of the modified Asphalt cement found to be increasing gradually with adding more percentages of Nano materials, while temperature sensitivity decreases. Results also recommended that adding (5%) by weight for both Nano materials considered as optimum amount. Low productivity obtained at low and intermediate temperatures mixing Nanoparticles to the asphalt binder.

Microstructure and Performance Analysis of Nanomaterials Modified Asphalt

Nanomaterials have been generally applied in all fields all over the world, because of their distinctive physical and chemical characteristics. In order to improve the properties of asphalt and asphalt mixtures, the selection of nanometer materials for modifying the base asphalt was processed. Furthermore, a series of asphalt experiments were performed to analyze the basic performance of these asphalt with varying nanometer material contents. The tests included penetration, ductility, softening point, viscosity and atomic force microscope (AFM). Property comparison between modified asphalt and base asphalt was undertaken. Additionally, AFM images of modified asphalt at the optimum nanomaterials content were presented, which indicated that 2% carbon nano powders modified asphalt has an excellent uniformity structure in the base asphalt compared with microstructures of the other nanomaterials modified asphalt. Besides, mechanical performance tests of asphalt mixtures were carried out, and showed that the properties of nanomaterial modified asphalt were superior to those of the base asphalt.

Nanomaterials Applied in Asphalt Modification: A Review

Nanotechnology has been gradually penetrated into the field of asphalt modification. Seemingly magic effects of nanomaterials have now been brought to improve the performance of asphalt. To demonstrate many of the prospective applications, researchers have conducted a series of positive and effective efforts dealing with the preparation of modified asphalt to demonstrate the mechanism of modification and the resultant improvement in performance. In this review, various nanomaterials used in asphalt modification are initially presented, followed by the methods employed to modify the asphalt with these materials and finally the effects of nanomaterials on the performance of base asphalt are presented and the modification mechanisms are discussed. Based on the current research results, the influence of preparation process parameters on the compatibility of every phase in the modified asphalt and the stability of the modified asphalt system are described. Finally, the development trend of the topic field is projected.

Evaluation of Asphalt Enhanced with Locally Made Nanomaterials

This research work focused on the investigation of the properties of asphalt binder modified with different percentages of nanoclay (NC), and nanosilica. The nanosilica was manufactured from two different sources: silica fume (NSF) and rice husk (NSH). Results showed that, NSF tends to decrease the penetration and increase the softening point temperature (SFT) and rotational viscosity (RV). However, NC content more than 3% was found to increase the penetration and decrease both RV and SFT. Using smaller percentages of NC increased both SFT and RV and decreased the penetration. Up to 3% of NSH exhibited improvement in penetration, SFT, and RV, however slight or no improvement was observed at higher contents. The Dynamic Shear Rheometer (DSR) results showed obvious improvement in the Superpave performance grade. Both NSF and NC were found to improve Marshall stability of the asphalt mixtures.

Developments of nano materials and technologies on asphalt materials – A review

Construction and Building Materials, 2017

h i g h l i g h t s Many factors had effects on the properties of nano-modified asphalt binder. Nano materials improved low and high temperature performances of asphalt binder. Studies on nano modified mixtures were less than those on nano modified binders. Economic, ecological and environmental evaluations of need to be considered.

Assessment of Asphalt Binders and Hot Mix Asphalt Modified with Nanomaterials

Periodica Polytechnica Civil Engineering

In the recent times, asphalt binder modification has emerged an inevitable alternative in the paving industry to ensure better performing pavements against the distresses caused by common factors such as; moisture susceptibility and high-temperature sensitivity of asphalt binders. Nanomaterials, as asphalt-modifiers, have proved to be the most promising materials in the industry owing to their higher active surface area and small particle size. This study was devoted to assessing the modification influence of three different types of nanomaterials, including nano-Bentonite, nano-CaCO3, and ZycoTherm, on the properties of asphalt binder and HMA. Conventional and rheological tests on asphalt binders, as well as, Marshall mix design and modified Lottman test on laboratory-prepared HMA specimens were conducted in order to signify the influence of nanomodification. The research findings suggested that nanomaterials can potentially enhance the high-temperature susceptibility resistance, s...

A Review of Nanomaterials’ Effect on Mechanical Performance and Aging of Asphalt Mixtures

Applied Sciences

This review addresses the effects of the modifications with nanomaterials, particularly nanosilica, nanoclays, and nanoiron, on the mechanical performance and aging resistance of asphalt mixtures. The desire for high-performance and long-lasting asphalt pavements significantly pushed the modification of the conventional paving asphalt binders. To cope with such demand, the use of nanomaterials for the asphalt binder modification seems promising, as with a small amount of modification an important enhancement of the asphalt mixture mechanical performance can be attained. Several studies already evaluated the effects of the modifications with nanomaterials, mostly focusing on the asphalt binder properties and rheology, and the positive findings encouraged the study of modified asphalt mixtures. This review focuses on the effects attained in the mechanical properties of the asphalt mixtures, under fresh and aged conditions. Generally, the effects of each nanomaterial were evaluated wit...