CLS RcK37 S4 XC3 D25 CEM IV A 32,5 N LHSR LP CAM

The concrete studied is CLS Rck37 S4 XC3 D25 CEM IV A 32,5 N LH/SR LP CAM.

For the evaluation of impact, the declared unit of concrete is 1 m3. The reference period for the collected data is the year 2023. The total amount of concrete made, in the considered period, is <100 m3. According to EN 15804:2012+A2:2019/AC:2021 the study spans from “cradle to gate with options”, with the modules: A1, A2, A3, B1, B2, B3, B4, B5, B6, B7, C1, C2, C3, C4 and D. Exclusion of input and output data, i.e. “cut off criteria”, is fixed at 1%, in term of mass, energy and environmental relevance. Thus, a process can be neglected if its contribution is minor to 1% of the total mass, primary energy and total impact. However, all processes for which data are available are considered, even though with a contribution minor than 1%.

The production of concrete is modelled by primary data collected in CERNUSCO S/N (MI) is the production site for the above said considered reference period. Allocation is avoided, whenever possible, by dividing the system into sub-systems. When allocation cannot be avoided, mass allocation is applied. For the modeling of waste, the “Polluter pays principle” is applied.