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ナノミネラル複合材料によるアスファルト道路舗装の改良(IMPROVING ASPHALT ROAD PAVEMENT USING ENGINEERED NANO MINERAL COMPOSITES)

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2022-03-29 スウォンジー大学

スウォンジー大学とブラウンシュヴァイク工科大学の研究者が、環境に優しい新規のナノアスファルトバインダーを開発しました。この製品は、従来のアスファルトと比較して、アスファルト混合物の製造時のエネルギー消費を大幅に削減すると同時に、蒸気や温室効果ガスの排出を最小限に抑える新しいクラスのウォームミックスアスファルト(WMA)添加剤を生成し、大規模でも効果的に作用します。

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アスファルトバインダーにおける工学的ナノコンポジット Engineered nanocomposites in asphalt binders

Goshtasp Cheraghian, Michael P. Wistuba, Sajad Kiani, Ali Behnood, Masoud Afrand and Andrew R. Barron

From the journal Nanotechnology Reviews

Published:March 2, 2022

Engineered nanocomposites in asphalt binders
Recently, nanotechnology has been effectively used in the field of road pavement. Oxidation and aging of asphalt cause d...

 

ナノミネラル複合材料によるアスファルト道路舗装の改良(IMPROVING ASPHALT ROAD PAVEMENT USING ENGINEERED NANO MINERAL COMPOSITES)

Abstract

Recently, nanotechnology has been effectively used in the field of road pavement. Oxidation and aging of asphalt cause deterioration of road pavements and increase asphalt-related emissions. We propose an anti-aging strategy to interrupt the asphalt deterioration by using engineered clay/fumed silica nanocomposites. In this research, the morphological, chemical, thermal, mechanical, and rheological properties of nano-modified asphalt binders are meticulously analyzed in various conditions. The experiment results proved that this composite efficiently disrupts the chemical oxidation and decomposition in the mixture and reduces the aging rate. Remarkably, asphalt binder rheology experiments revealed that the addition of 0.2–0.3 wt% of nano-reinforced materials maximized their rheological resistance after short- and long-term aging. Moreover, nanoparticles improve the moisture resistance efficiency and in turn overcome the critical issue of moisture in low production temperature within the framework of warm mix asphalt technology. This cost-effective, facile, and scalable approach in warm mix asphalt mixtures can contribute to increased sustainability and lifespan of pavements and a reduction in greenhouse gas emissions.

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