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Caraterização experimental de agregados provenientes do processamento de rochas
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A presente dissertação, desenvolvida nos Departamentos de Ciências da Terra e de En-
genharia Civil da Faculdade de Ciências e Tecnologias da Universidade Nova de Lisboa, incide
na problemática da produção e gestão de resíduos do setor de produção de rocha ornamental.
Para que se possa dar uma nova aplicabilidade aos materiais, são necessários estudos
que possibilitem obter informações acerca do seu comportamento em diversos ambientes e
integrados em diferentes meios. Para tal, e como tema principal desta dissertação, foi realizada
uma campanha experimental que consistiu na realização de provetes de argamassa incorpo-
rando resíduos de Mármore e de Granito, em substituição parcial ao agregado normalizado,
numa proporção de 10%, 15% e 20%, em massa.
A campanha experimental é composta por duas séries, nas quais diferem os traços com-
posicionais, sendo a Série 1 correspondente a provetes de argamassa com um traço de 1:3
(ligante: agregado), e a Série 2 correspondente a provetes com um traço composicional de 1:5
(ligante: agregado). O agregado utilizado na produção das amassaduras trata-se de um agre-
gado normalizado e o ligante utilizado foi o cimento de Portland do tipo II/B-L- 32,5 N. Os
provetes de ambas as séries foram posteriormente submetidos a ensaios de caraterização física
e mecânica, com fim à obtenção de parâmetros resistentes, nomeadamente resistência à com-
pressão, resistência à tração por flexão, absorção de água, massa volúmica e porosidade.
Os resultados provenientes da campanha experimental efetuada foram posteriormente
analisados e comparados com trabalhos realizados por outros autores, que efetuaram estudos
no âmbito da incorporação de resíduos da mesma natureza em argamassas.
This thesis, developed in the department of Earth Sciences and Civil Engineering of the Faculty of Sciences and Technologies of NOVA University of Lisbon, incident on the problem of production and management of waste from the ornamental rock production and transfor- mation sector. In order to give a new applicability to those materials, studies are needed to obtain In- formation about their behaviour and integration in different environments. The main theme of this thesis is an experimental campaign, consisted of carrying out mortar tests incorporating marble and granite residues, in partial replacement to normalized aggregate sand, in a pro- portion of 10, 15 and 20%, by mass. The experimental campaign is composed of two series, in which the compositional traits differ, being the Series 1 corresponding to proof of mortar with a trace of 1:3 (binder: aggre- gate), and Series 2 corresponding to proof with a compositional trait of 1:5 (binder: aggre- gate). The aggregate used in the production of mortars was a standardized sand and the binder used was cement Portland type II/B-L- 32.5 N. Evidence for both series was provided after testing physical and mechanical properties, aiming at the durability and resistant parameters. The results from the experimental campaign carried out were subsequently analysed and compared with works from other authors, also carried out in the scope to incorporate waste of the same nature in mortars.
This thesis, developed in the department of Earth Sciences and Civil Engineering of the Faculty of Sciences and Technologies of NOVA University of Lisbon, incident on the problem of production and management of waste from the ornamental rock production and transfor- mation sector. In order to give a new applicability to those materials, studies are needed to obtain In- formation about their behaviour and integration in different environments. The main theme of this thesis is an experimental campaign, consisted of carrying out mortar tests incorporating marble and granite residues, in partial replacement to normalized aggregate sand, in a pro- portion of 10, 15 and 20%, by mass. The experimental campaign is composed of two series, in which the compositional traits differ, being the Series 1 corresponding to proof of mortar with a trace of 1:3 (binder: aggre- gate), and Series 2 corresponding to proof with a compositional trait of 1:5 (binder: aggre- gate). The aggregate used in the production of mortars was a standardized sand and the binder used was cement Portland type II/B-L- 32.5 N. Evidence for both series was provided after testing physical and mechanical properties, aiming at the durability and resistant parameters. The results from the experimental campaign carried out were subsequently analysed and compared with works from other authors, also carried out in the scope to incorporate waste of the same nature in mortars.
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Palavras-chave
Sustentabilidade Resíduos de mármore Resíduos de granito Argamassas