| Autor: |
Luiz de Brito Prado Vieira, Antônio Domingues de Figueiredo, Fabio Cirilo, Vicente Bueno Verdiani, Leonardo Moreira de Lima |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Revista IBRACON de Estruturas e Materiais, Vol 15, Iss 6 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
1983-4195 |
| DOI: |
10.1590/s1983-41952022000600011 |
| Popis: |
abstract: The volume of waste generated by ready-mix concrete (RMC) plants in Brazil is significant. According to Oliveira et al. [1] waste from construction and demolition in Brazil was approximately 45-79 million tons and most of those waste is sent to landfills (79%). This study presents an assessment of the RMC plant waste reduction capacity using 3 different methods: (a) reuse of concrete in the fresh state by using hydration-stabilizing admixtures (HSA); (b) recycling of concrete aggregates by separating the aggregates from the cement paste before the concrete hardens; (c) recycling of hardened concrete as aggregates through the crushing process. Results indicated that concretes with compressive strengths up to 25.0 MPa are more effective in reducing CO2 emission and consequently CO2 footprint when using method (b); if evaluating higher resistance classes, method (a) was the most effective. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
