Possibilidades de destinações e reaproveitamentos de resíduos da construção em canteiros de obra de Barra do Garças/MT

Abstract

This study aims to analyze the possibilities for the disposal, reuse, and recycling of construction and demolition waste (CDW) generated at construction sites in the municipality of Barra do Garças, Mato Grosso, Brazil. Given the significant waste generation by the construction industry in Brazil—accounting for approximately 50% to 60% of urban solid waste—the study investigates alternatives for the management and utilization of these materials, taking into account the local context. The methodology employed included a literature review and field research conducted at four construction sites in the region, where the main types of waste were identified. The research revealed a predominance of “Class A” waste (concrete, mortar, and ceramic components), followed by “Class B” waste (wood, cardboard, plastic, and kraft paper), and, to a lesser extent, “Class D” waste (paint and solvent containers). Alternatives for the reuse of these materials both on- and off-site were discussed, such as their conversion into recycled aggregates for use in pavement and non-structural concrete. The study also highlighted the lack of local infrastructure, including the absence of transfer and sorting areas (ATT) and recycling plants, as well as the limited presence of debris collection services— factors that hinder effective CDW management. It is concluded that, despite regional limitations, there is potential to improve construction waste management through public policies, financial incentives, and increased awareness among companies regarding reuse practices within construction sites.