Estoque de carbono em produtos madeireiros em edifícios residenciais de estruturas em concreto armado

Abstract

The use of wood shows many environmental advantages when compared to its substitutes such as concrete, iron, aluminum, plastic and others. Its production requires low power consumption and its use is a way to immobilize carbon. The objective of this study was to evaluate and to estimate carbon in woody products used in the construction of a popular residential building. The building evaluated is composed by 424 apartments and a total area of 30.000m². For that, we used calculations of the relations between volume and basic density to estimate the biomass of the wooden parts. The carbon stock was considered as 50% of the dry mass. The higher amount of carbon stock found was during the construction of the buildings, in concrete formworks, with approximately 98,5 tons. There are about 65kg of carbon stock in doors and door jambs inside in apartment. Substituting wood in the floors would result in a 163 kg carbon immobilization potential. Th substitution for wood windows would add add 52 kg of carbon in each apartment. The results allow to observe that the carbon immobilized occurred in the temporary wood use during the constructions. The substitution of products such as ceramic and aluminum for wood would result in tons of carbon stock in these residential condominiums.