“…Several research studies have been conducted to develop indicators for airborne emissions (with global warming potential) of construction materials considering the production phase (e.g. Campos, Punhagui, & John, 2011;Lima, 2010;Punhagui, Campos, Gonzalez Barroso, and John, 2012;Saade, Oliveira, Silva, and Gomes, 2010;Souza, 2012). There are, also, some results from research conducted by material producer associations regarding environmental indicators related to a specific sector, such as the Brazilian Steel Institute (IABr, 2010), a sustainability indicator related to the steel sector.…”