Gravel - round (gravel and sand quarry operation)

The activity generating the emissions is gravel and sand quarry operation. The Reference Product is gravel, round. The product "gravel, round" represents round gravel, which is co-produced with sand in the same process. The module corresponds to the production of 1 kg of sand (35%) and gravel (65%). The largest use of construction sand and gravel is as aggregate for the production of concrete. The second largest use is 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 amounts of reference products were expressed relative to the production volumes. 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/9017/documentation