Application of Construction and Demolition Waste in Civil Construction in the Brazilian Amazon—Case Study of the City of Rio Branco
The lack of usable aggregates for civil construction in Rio Branco (capital of Acre, a Federal State in the Amazon region) makes the production and use of recycled aggregates from construction and demolition waste (CDW) an alternative of great interest. In this study, a comprehensive characterizatio...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-04-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/14/9/2247 |
| _version_ | 1797536152220073984 |
|---|---|
| author | Fernando da Silva Souza José Maria Franco de Carvalho Gabriela Grotti Silveira Vitória Cordeiro Araújo Ricardo André Fiorotti Peixoto |
| author_facet | Fernando da Silva Souza José Maria Franco de Carvalho Gabriela Grotti Silveira Vitória Cordeiro Araújo Ricardo André Fiorotti Peixoto |
| author_sort | Fernando da Silva Souza |
| collection | DOAJ |
| description | The lack of usable aggregates for civil construction in Rio Branco (capital of Acre, a Federal State in the Amazon region) makes the production and use of recycled aggregates from construction and demolition waste (CDW) an alternative of great interest. In this study, a comprehensive characterization of CDW collected from 24 construction sites of six building types and three different construction phases (structures, masonry, and finishing) was carried out. The fine and coarse recycled aggregates were produced and evaluated in 10 different compositions. The aggregates’ performance was evaluated in four mixtures designed for laying and coating mortars with a total replacement of conventional aggregates and a mixture designed for a C25 concrete with 50% and 100% replacement of conventional aggregates. CDW mortars showed lower densities and greater water retention, initial adhesion, and mechanical strength than conventional mortars. CDW concretes presented lower densities and greater resistance to chloride penetration than conventional concrete, with a small mechanical strength reduction. The recycled CDW aggregates proved to be technologically feasible for safe application in mortars and concrete; for this reason, it is believed that the alternative and proposed methodology is of great interest to the Amazonian construction industry, considering the high costs of raw materials and the need for defining and consolidating a sustainable development model for the Amazon region. |
| first_indexed | 2024-03-10T11:55:35Z |
| format | Article |
| id | doaj.art-fc0af942063b4454b3b5f8413a7c429a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T11:55:35Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-fc0af942063b4454b3b5f8413a7c429a2023-11-21T17:22:07ZengMDPI AGMaterials1996-19442021-04-01149224710.3390/ma14092247Application of Construction and Demolition Waste in Civil Construction in the Brazilian Amazon—Case Study of the City of Rio BrancoFernando da Silva Souza0José Maria Franco de Carvalho1Gabriela Grotti Silveira2Vitória Cordeiro Araújo3Ricardo André Fiorotti Peixoto4Laboratory of Materials for Civil Construction, Department of Civil Engineering, Federal University of Ouro Preto, 35400-000 Ouro Preto, BrazilLaboratory of Composite Materials, Department of Civil Engineering, Federal University of Viçosa, 36570-900 Viçosa, BrazilLaboratory of Materials for Civil Construction, Department of Civil Engineering, Federal University of Acre, 69920-900 Rio Branco, BrazilLaboratory of Materials for Civil Construction, Department of Civil Engineering, Federal University of Acre, 69920-900 Rio Branco, BrazilLaboratory of Materials for Civil Construction, Department of Civil Engineering, Federal University of Ouro Preto, 35400-000 Ouro Preto, BrazilThe lack of usable aggregates for civil construction in Rio Branco (capital of Acre, a Federal State in the Amazon region) makes the production and use of recycled aggregates from construction and demolition waste (CDW) an alternative of great interest. In this study, a comprehensive characterization of CDW collected from 24 construction sites of six building types and three different construction phases (structures, masonry, and finishing) was carried out. The fine and coarse recycled aggregates were produced and evaluated in 10 different compositions. The aggregates’ performance was evaluated in four mixtures designed for laying and coating mortars with a total replacement of conventional aggregates and a mixture designed for a C25 concrete with 50% and 100% replacement of conventional aggregates. CDW mortars showed lower densities and greater water retention, initial adhesion, and mechanical strength than conventional mortars. CDW concretes presented lower densities and greater resistance to chloride penetration than conventional concrete, with a small mechanical strength reduction. The recycled CDW aggregates proved to be technologically feasible for safe application in mortars and concrete; for this reason, it is believed that the alternative and proposed methodology is of great interest to the Amazonian construction industry, considering the high costs of raw materials and the need for defining and consolidating a sustainable development model for the Amazon region.https://www.mdpi.com/1996-1944/14/9/2247construction and demolition wasterecycled aggregatesustainable developmentAmazon regioneco-efficient cement composite |
| spellingShingle | Fernando da Silva Souza José Maria Franco de Carvalho Gabriela Grotti Silveira Vitória Cordeiro Araújo Ricardo André Fiorotti Peixoto Application of Construction and Demolition Waste in Civil Construction in the Brazilian Amazon—Case Study of the City of Rio Branco Materials construction and demolition waste recycled aggregate sustainable development Amazon region eco-efficient cement composite |
| title | Application of Construction and Demolition Waste in Civil Construction in the Brazilian Amazon—Case Study of the City of Rio Branco |
| title_full | Application of Construction and Demolition Waste in Civil Construction in the Brazilian Amazon—Case Study of the City of Rio Branco |
| title_fullStr | Application of Construction and Demolition Waste in Civil Construction in the Brazilian Amazon—Case Study of the City of Rio Branco |
| title_full_unstemmed | Application of Construction and Demolition Waste in Civil Construction in the Brazilian Amazon—Case Study of the City of Rio Branco |
| title_short | Application of Construction and Demolition Waste in Civil Construction in the Brazilian Amazon—Case Study of the City of Rio Branco |
| title_sort | application of construction and demolition waste in civil construction in the brazilian amazon case study of the city of rio branco |
| topic | construction and demolition waste recycled aggregate sustainable development Amazon region eco-efficient cement composite |
| url | https://www.mdpi.com/1996-1944/14/9/2247 |
| work_keys_str_mv | AT fernandodasilvasouza applicationofconstructionanddemolitionwasteincivilconstructioninthebrazilianamazoncasestudyofthecityofriobranco AT josemariafrancodecarvalho applicationofconstructionanddemolitionwasteincivilconstructioninthebrazilianamazoncasestudyofthecityofriobranco AT gabrielagrottisilveira applicationofconstructionanddemolitionwasteincivilconstructioninthebrazilianamazoncasestudyofthecityofriobranco AT vitoriacordeiroaraujo applicationofconstructionanddemolitionwasteincivilconstructioninthebrazilianamazoncasestudyofthecityofriobranco AT ricardoandrefiorottipeixoto applicationofconstructionanddemolitionwasteincivilconstructioninthebrazilianamazoncasestudyofthecityofriobranco |