Use of Construction and Demolition Waste in Lateritic Concrete

Abstract

In recent decades the problem of construction and demolition waste has been receiving more attention due to possible ecological and economic damage caused by them. This is because they are produced in large quantities and often receive inadequate disposal, being deposited illegally in vacant lots, public places and even in areas of environmental preservation. The practice of recycling of construction and demolition waste (CDW) by construction is an alternative that minimizes the amount of waste generated and the impacts caused by them. Moreover, the introduction of alternative materials might reduce the production costs of construction. In Brazil, there is great availability of lateritic concretions. This material, according to some studies, proved to be a viable alternative to be used as coarse aggregate in concrete production. In this study, it is used the CDW as a filler to replace 10% of Portland cement and, as coarse aggregate, lateritic concretions. Tests of physical properties of coarse and fine aggregates and determination of the mechanical strength of hardened concrete were made. The construction and demolition waste used as filler to replace the mass of cement in the mixture proved to be a viable alternative.

O Não Verbal Na Leitura De Memes No Ensino-Aprendizagem De Espanhol Como Língua Adicional

“…Como contribución teórica, tenemos el Análisis del Discurso (AD) basado en los estudios de Orlandi (2009Orlandi ( , 2012 y Pecheux (2010) y para analizar el no verbal Souza (2001Souza ( , 2011Souza ( , 2018 y Courtine (2013). Para analizar el género meme nos basamos en los autores Lara (2017,2020) y Candido;Gomes (2015). Nuestro estudio nos permite entender el meme como un género multimodal que permite actividades de lectura diversas, críticas y también divertidas.…”

“…Para o desenvolvimento deste trabalho, pensamos o processo leitor pelo viés da Análise do Discurso (AD) com base nos escritos de Orlandi (2009Orlandi ( , 2012 e Pêcheux (2010), a leitura do não verbal e de textos imagético-verbais com foco na produção de Souza (2001Souza ( , 2011Souza ( , 2018 e Courtine (2013). Para analisar o gênero digital meme temos as autoras Lara (2017,2020) e Candido;Gomes (2015).…”