Bitumen and asphalt concrete modified by nanometer-sized particles: Basic concepts, the state of the art and future perspectives of the nanoscale approach

Caputo, Paolino; Porto, Michele; Angelico, Ruggero; Loise, Valeria; Calandra, Pietro; Rossi, Cesare Oliviero

doi:10.1016/j.cis.2020.102283

Cited by 65 publications

(36 citation statements)

References 144 publications

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“…In addition, due to the advantages of simple operation, economy, real time, and no radiation, ultrasound can be used in the follow-up of PSA and the evaluation of efficacy and guide the suction and injection treatment of articular cavity effusion. In the future, to establish a unified, simple, and effective ultrasonographic scoring standard for PSA will be of great significance for the diagnosis and prognosis evaluation of PSA [1][2][3][4][5][6][7][8][9][10].…”

Section: Discussionmentioning

confidence: 99%

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The Clinical Value of High-Frequency Ultrasound in the Diagnosis of Psoriatic Arthritis

Yang

Peng

Yan

2021

Scientific Programming

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Objective. To investigate the clinical value of high-frequency ultrasound in psoriatic arthritis (PSA). The study subjects were 32 outpatients and inpatients with PSA who were pathologically diagnosed from January 2018 to September 2020, including 11 males and 21 females, aged 25–70 years old, with an average of (49.8 ± 14.0) years old. All patients underwent ultrasound and physical examination, including the small joints of the hands and feet on both sides, nails, and the main attachment points of the lower limbs (quadriceps tendon, patellar ligament, Achilles tendon, and plantar fascia attachment). The involvement of these joints, attachment points, and nails was observed and counted, respectively, and statistically analyzed. Results. Physical examination revealed 406 (406/1792, 22.66%) joint lesions, 79 (79/320, 24.69%) attachment inflammation, and 84 (84/320, 26.25%) nail lesions. Ultrasonography revealed 492 (492/1792, 27.46%) joint lesions, 166 (166/320, 51.88%) attachment inflammation, and 203 (203/320, 63.44%) nail lesions. The positive rate of ultrasound examination was higher than that of physical examination ( P < 0.001 ). Conclusion. Ultrasonography can detect joint, attachment, and nail lesions earlier than physical examination in patients with PSA. Ultrasonography is of great value in the diagnosis of PSA.

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Section: Discussionmentioning

confidence: 99%

“…Physical examination and ultrasonic examination results of 320 attachment points in 30 PSA patients(1).…”

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confidence: 99%

The Clinical Value of High-Frequency Ultrasound in the Diagnosis of Psoriatic Arthritis

Yang

Peng

Yan

2021

Scientific Programming

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“…Most work throughout the world on the use of nanotechnology solutions in pavement engineering has been concentrated on the improvement of binders for asphaltic materials [15,16]. This trend is no surprise due to the popularity of the concept of fulldepth asphalt pavements, the vulnerability of asphalt binder characteristics to the effects of aging (and associated problems [4]) and the considerable investments needed in the construction of full-depth asphalt pavements.…”

Section: Background-primary Benefits Of the Introduction Of New-age Nanotechnology Solutions (Nano-silanes) In Pavement Materials Design mentioning

confidence: 99%

Nanotechnology Incorporation into Road Pavement Design Based on Scientific Principles of Materials Chemistry and Engineering Physics Using New-Age (Nano) Modified Emulsion (NME) Stabilisation/Enhancement of Granular Materials

Jordaan

Steyn

2021

Applied Sciences

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The use of naturally available materials not conforming to traditional specifications or standards in the base and sub-base layers of road pavement structures and stabilised with New-age (Nano) Modified Emulsions (NME) have been tested, implemented and successfully verified through Accelerated Pavement Testing (APT) in South Africa. This was made possible through the development and use of a materials design procedure addressing fundamental principles and based on scientific concepts which are universally applicable. The understanding and incorporation of the chemical interactions between the mineralogy of the materials and an NME stabilising agent (compatibility between the chemistry of the reactive agents and material mineralogy) into the design approach is key to achieving the required engineering properties. The evaluation of the stabilised materials is performed using tests indicative of the basic engineering properties (physics) of compressive strengths, tensile strengths and durability. This article describes the basic materials design approach that was developed to ensure that organofunctional nano-silane modified emulsions can successfully be used for pavement layer construction utilising naturally available materials at a low risk. The enablement of the use of naturally available materials in all pavement layers can have a considerable impact on the unit cost and lifecycle costs of road transportation infrastructure.

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“…In recent years, nanotechnology has been widely used in asphalt modification, which has obvious effect on improving the hightemperature performance of asphalt [1][2][3][4][5]. Caputo et al introduced the properties of nanoparticles in an easy to review their use in bitumen and asphalt preparation and Silica, ceramic, clay, other oxides, and inorganic nanoparticles and discussed the framework of their use in bitumen and asphalt preparation for various scopes [6]. Li et al found that the addition of nanomaterials could dramatically enhance the properties of an asphalt material such as viscoselasticity, high-temperature properties, and the resistances to aging, fatigue, and moisture [7].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Response and Structure Optimization of Nanomodified Asphalt Pavement

Tian²,

Zhang

2021

Advances in Civil Engineering

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Nanomaterials are widely used in the preparation of modified asphalt because they can improve the high-temperature performance of matrix asphalt and have achieved good engineering results. However, the existing research mainly focuses on the material analysis and formula development of nanomodified asphalt and has not yet been involved in the mechanical response of the nanomodified asphalt pavement structure. The mechanical response contains the horizontal tensile stress and the vertical compressive stress of SiO2 modified asphalt pavement. It is unable to propose the matching pavement structure combination for the unique material characteristics of nanomodified asphalt, which leads to the increase of the possibility of pavement diseases and material waste. Hence, considering that semirigid base is the most widely used base type in China, two different structural models of nanomodified asphalt pavement are established according to the current specifications. The effects of pavement thickness, material type, and pavement design parameters on the mechanical response of nanomodified asphalt pavement are analyzed, and then the principle of optimal mechanical performance is taken and the optimal combination of nanomodified asphalt pavement structure is proposed.

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Bitumen and asphalt concrete modified by nanometer-sized particles: Basic concepts, the state of the art and future perspectives of the nanoscale approach

Cited by 65 publications

References 144 publications

The Clinical Value of High-Frequency Ultrasound in the Diagnosis of Psoriatic Arthritis

The Clinical Value of High-Frequency Ultrasound in the Diagnosis of Psoriatic Arthritis

Nanotechnology Incorporation into Road Pavement Design Based on Scientific Principles of Materials Chemistry and Engineering Physics Using New-Age (Nano) Modified Emulsion (NME) Stabilisation/Enhancement of Granular Materials

Mechanical Response and Structure Optimization of Nanomodified Asphalt Pavement

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