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PIARC (World Road Association), founded in 1909 and comprising 125 member governments from all over the world, is the global forum for exchange of knowledge and experience on roads, road transport policies and practices. With consultative status to the Economic and Social Council of the United Nations, the Association is contributing to a stable and sustainable global development of the road and transport sector.

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Extending the Longevity of Pothole Repairs Development of a Water-Activated Asphalt Primer - Chambéry 2026 Honourable Mention

Pavement damage has become increasingly frequent on expressways in Japan, primarily due to the growing impacts of climate change. In summer, ambient temperatures can exceed 40 °C, causing asphalt pavements to suffer from rutting and blistering. During winter, infiltrated water penetrates the pavement structure and undergoes repeated freeze-thaw cycles—freezing at night and thawing during the day.