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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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Optimal use of marginal materials in accordance with Spain's PG-3 standard

This article describes the Spanish standard PG-3 standard, which aims at enhancing the use of existing natural resources on jobsites and in the vicinity for road and bridge construction.