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Desenvolvimento e caracterização de argamassas autonivelantes para implementação industrial
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A presente dissertação foi desenvolvida no âmbito da obtenção de grau de Mestre em
Engenharia Química, tendo o trabalho experimental sido realizado na empresa Diera - Fábrica
de Revestimentos, Colas e Tintas, Lda., com o objetivo de desenvolver formulações de
argamassas autonivelantes com potencial de implementação a nível industrial.
Este tema torna-se relevante devido à crescente necessidade de soluções de construção que
permitam maior rapidez de execução, qualidade de acabamento e que proporcionem melhores
condições de segurança em obra para os trabalhadores, contribuindo simultaneamente para o
reforço da competitividade da Diera no mercado.
Neste contexto, torna-se fundamental compreender os principais fatores que influenciam o
desempenho das argamassas autonivelantes, nomeadamente a constituição, as propriedades
fundamentais, com especial atenção nos sistemas binário e ternário, bem como o papel crucial
dos aditivos na otimização das propriedades mecânicas.
Experimentalmente, procedeu-se ao desenvolvimento de diferentes formulações à escala
laboratorial (36 formulações), avaliando-se o seu comportamento através de ensaios de
caracterização granulométrica e de fluidez, bem como o aspeto superficial e o desempenho
mecânico, nomeadamente resistências à flexão e à compressão. Das formulações
desenvolvidas foram validadas seis formulações que apresentaram o melhor desempenho
global, sendo caracterizadas quanto aos seus perfis granulométricos, fluidez e evolução das
resistências mecânicas aos 7 e 28 dias de cura.
Os resultados obtidos demonstraram a viabilidade técnica das formulações desenvolvidas e o
seu potencial de transição da escala laboratorial para uma futura escala industrial, cumprindo
os requisitos normativos de desempenho da norma EN 13813:2002-Screed material and floor
screeds – Screed material – Properties and requirements. Estas formulações representam uma
oportunidade para a Diera disponibilizar novas soluções autonivelantes no mercado da
construção civil, contribuindo para as metas estratégicas da empresa para o ano de 2026.
Foram ainda desenvolvidas duas formulações de produtos cimentícios adicionais,
nomeadamente, uma argamassa autonivelante de grande espessura e de um graute, cujos
resultados preliminares evidenciaram potencial para futuros desenvolvimentos e otimização.
The present dissertation was developed as part of the requirements for the Master’s degree in Chemical Engineering, with the experimental work carried out at Diera - Fábrica de Revestimentos, Colas e Tintas, Lda., with the aim of developing self-levelling mortar formulations with potential for industrial implementation. This topic becomes relevant due to the growing need for construction solutions that allow faster execution, better finishing quality, and provide safer working conditions for workers, while simultaneously contributing to strengthening Diera’s competitiveness in the market. In this context, it becomes essential to understand the main factors that influence the performance of self-levelling mortars, namely their composition, fundamental properties, with special attention to binary and ternary systems, as well as the crucial role of additives in optimizing mechanical properties. Experimentally, different formulations were developed at the laboratory scale (36 formulations), with their behaviour being evaluated through particle size distribution and flowability tests, as well as their surface appearance and mechanical performance, including flexural and compressive strengths. From the formulations developed, six were validated as having the best overall performance, and they were characterized in terms of their particle size profiles, flowability, and the evolution of mechanical strengths at 7 and 28 days of curing. The results obtained demonstrated the technical feasibility of the developed formulations and their potential to transition from the laboratory scale to a future industrial scale, meeting the performance regulatory requirements of the standard EN 13813:2002 – Screed material and floor screeds – Screed material – Properties and requirements. These formulations represent an opportunity for Diera to offer new self-levelling solutions in the construction market, contributing to the company's strategic goals for 2026. Additionally, two formulations of other cementitious products were developed, namely a thick self-levelling mortar and a grout, whose preliminary results showed potential for future development and optimization.
The present dissertation was developed as part of the requirements for the Master’s degree in Chemical Engineering, with the experimental work carried out at Diera - Fábrica de Revestimentos, Colas e Tintas, Lda., with the aim of developing self-levelling mortar formulations with potential for industrial implementation. This topic becomes relevant due to the growing need for construction solutions that allow faster execution, better finishing quality, and provide safer working conditions for workers, while simultaneously contributing to strengthening Diera’s competitiveness in the market. In this context, it becomes essential to understand the main factors that influence the performance of self-levelling mortars, namely their composition, fundamental properties, with special attention to binary and ternary systems, as well as the crucial role of additives in optimizing mechanical properties. Experimentally, different formulations were developed at the laboratory scale (36 formulations), with their behaviour being evaluated through particle size distribution and flowability tests, as well as their surface appearance and mechanical performance, including flexural and compressive strengths. From the formulations developed, six were validated as having the best overall performance, and they were characterized in terms of their particle size profiles, flowability, and the evolution of mechanical strengths at 7 and 28 days of curing. The results obtained demonstrated the technical feasibility of the developed formulations and their potential to transition from the laboratory scale to a future industrial scale, meeting the performance regulatory requirements of the standard EN 13813:2002 – Screed material and floor screeds – Screed material – Properties and requirements. These formulations represent an opportunity for Diera to offer new self-levelling solutions in the construction market, contributing to the company's strategic goals for 2026. Additionally, two formulations of other cementitious products were developed, namely a thick self-levelling mortar and a grout, whose preliminary results showed potential for future development and optimization.
Descrição
Palavras-chave
Additives Mechanical performance Formulation development Mortar flowability Building materials Binary and Ternary system Aditivos Desempenho mecânico Desenvolvimento de formulações Fluidez da argamassa Materiais de construção Sistema binário e ternário