Spanish firms AMSA and ELSAN, with the Polytechnic University of Catalonia, replaced conventional mineral filler in bituminous road mix with biochar made from olive pits and pine waste. Lab results show comparable durability to standard asphalt, with up to 75% lower CO₂ emissions in the surface layer. The project won Barcelona's "21st Century Street" urban challenge.
(c) Leonardo del Sabio

Barcelona prueba un asfalto con huesos de aceituna que reduce las emisiones un 75%

ECOINVENTOS

Las empresas españolas AMSA y ELSAN, junto con la Universitat Politècnica de Catalunya, sustituyeron el filler mineral del asfalto convencional por biocarbón obtenido de huesos de aceituna y restos de pino. Los ensayos de laboratorio muestran prestaciones comparables al asfalto tradicional, con hasta un 75% menos de emisiones de CO₂ en la capa superficial. El proyecto ganó el reto urbano «La sección de calle del siglo XXI» de Barcelona.

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