| Author | Concrete Source |
|---|---|
| Abbaspour et al, 2016 [39] | demolished concrete from various sources such as buildings, curbs and gutters, pipes, and washouts |
| Bestgen et al, 2016 [1] | stockpiles of concrete |
| Bestgen et al, 2016 [27] | collected from quarries |
| Barbudo et al, 2012 [40] | crushed concrete |
| Butera et al, 2014 [9] | collected from selected recycling facilities |
| Butera et al, 2015 [41] | crushing facilities that receive materials from demolition sites (crushed concrete) and material from pre-cast concrete production |
| Coudray et al, 2017 [42] | power plants undergoing deconstruction |
| Del Rey et al, 2015 [23] | construction and demolition waste treatment plants |
| Engelsen et al, 2010 [5] | section of highway and new concrete |
| Engelsen et al, 2017 [43] | (no information) |
| Galvín et al, 2013 [2] | different sources |
| Galvín et al, 2014 [44] | different origins |
| Galvín et al, 2014 [45] | concrete blocks |
| Lopez Meza et al, 2008 [46] | laboratory formulated concrete |
| Roque et al, 2016 [47] | crushed concrete and crushed mixed concrete |
| Saca et al, 2015 [3] | steel plant |
| Rodrigues et al., 2017 [48] | crushed concrete |