# Life Cycle Carbon Assessment of Mortars with Carbonated and Non-Carbonated Recycled Aggregates
## 3 Life Cycle Inventory
### Transport (A2)  
The raw materials were transported from their origin to the mortar plant. The mortar plant considered in this analysis was SecilTek, located in Montijo. Thus, the distance \begin{table}
\begin{tabular}{c c c} \hline \hline \multirow{2}{*}{**Rexcled**} & \multicolumn{2}{c}{**GWP (kg CO2 eq./kg)**} \\ \cline{2-3}  & **Associated with** & **Associated with** \\  & **RA Treatment** & **CO2 Capture** & **Total** \\ \hline MRA-RP & \(4.39\times 10^{-4}\) & & \(4.39\times 10^{-4}\) \\ \hline RCA-RP & \(1.45\times 10^{-3}\) & & \(1.45\times 10^{-3}\) \\ \hline RCA-IS & \(1.45\times 10^{-3}\) & & \(1.45\times 10^{-3}\) \\ \hline RCA-IW & \(1.45\times 10^{-3}\) & & \(1.45\times 10^{-3}\) \\ \hline CA-L & \(1.45\times 10^{-3}\) & & \(1.45\times 10^{-3}\) \\ \hline MRA-RP Carbonated & \(4.39\times 10^{-4}\) & \(-6.60\times 10^{-3}\) & \(-6.16\times 10^{-3}\) \\ \hline RCA-RP Carbonated & \(1.45\times 10^{-3}\) & \(-8.80\times 10^{-3}\) & \(-7.35\times 10^{-3}\) \\ \hline RCA-IS Carbonated & \(1.45\times 10^{-3}\) & \(-9.70\times 10^{-3}\) & \(-8.25\times 10^{-3}\) \\ \hline RCA-IW Carbonated & \(1.45\times 10^{-3}\) & \(-4.09\times 10^{-2}\) & \(-3.95\times 10^{-2}\) \\ \hline CA-L Carbonated & \(1.45\times 10^{-3}\) & \(-4.90\times 10^{-2}\) & \(-4.76\times 10^{-2}\) \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Environmental GWP impact of recycled aggregates. \begin{table}
\begin{tabular}{c c} \hline \hline \multirow{2}{*}{**Rexcled Aggregates**} & **Carbonation Conditions** & **CO2 Captured (kg of CO2 per Tonne of Aggregate)** \\ \hline MRA-RP Carbonated & \(23\,^{\circ}\)C, \(60\%\) RH, \(25\%\) [CO2] for \(5\) h & \(6.6\) \\ RCA-RP Carbonated & \(23\,^{\circ}\)C, \(60\%\) RH, \(25\%\) [CO2] for \(12\) h & \(9.7\) \\ RCA-IS Carbonated & \(23\,^{\circ}\)C, \(60\%\) RH, \(25\%\) [CO2] for \(12\) h & \(8.8\) \\ RCA-IW Carbonated & \(23\,^{\circ}\)C, \(60\%\) RH, \(25\%\) [CO2] for \(12\) h & \(40.9\) \\ CA-L Carbonated & \(23\,^{\circ}\)C, \(60\%\) RH, \(25\%\) [CO2] for \(5\) h & \(49.0\) \\ \hline \hline \end{tabular}
\end{table} 
Table 5: CO2 uptake of aggregates [19]. between each raw material origin and Seciltek was evaluated. Due to the close distance to the mortar plant, it was defined a cement plant from the Secil group, located in Outao. A medium distance from several suppliers was chosen to define the distance travelled by the natural aggregates (sand). It was assumed that admixtures came from the centre of Portugal. CDWs were the raw materials that had a greater transport distance. Figure 1 shows a scheme of the transport of CDWs from their origin to the mortar plants. CDWs originate in specific locals during construction and demolition actions and then are transported to recycling plants. From recycling plants, the recycled aggregates can be sent to the mortar plant where they are used as aggregates (1 st scenario) or can be transported to cement plants to be carbonated (2 nd scenario). Therefore, carbonated aggregates have additional transport distances. In Table 6, the route of each recycled aggregates is detailed.