Gravel - crushed (gravel production)

The activity generating the emissions is gravel production, crushed. The Reference Product is gravel, crushed. The product "gravel, crushed" represents crushed stone from open granite or basalt quarries. Although finer stones require more crushing energy than coarse ones, no distinction between gravel sizes was done, due to lack of detailed information. Crushed gravel is used as aggregate for construction, usually applied for concrete production or as a raw material in pavement subbase, for example as foundation material for highways, railways, runways, etc. Other major uses include aggregate for hot mix asphalt, and filler for highway, dam, and other back-filling. Smaller volumes of construction sand and gravel are used in plaster and gunite sands, snow and ice control, and railroad ballast. The Reference Product amount is 1. The cut-off classification is allocatable product. The activity type is ordinary transforming activity. Please refer to the ecoinvent documentation for full details: https://ecoquery.ecoinvent.org/3.12/cutoff/dataset/21575/documentation