http://repositorio.lnec.pt:8080/jspui/handle/123456789/63 2026-04-04T20:59:29Z http://repositorio.lnec.pt:8080/jspui/handle/123456789/1018922 The Influence of the Substrate and the Environmental Conditions on the Performance of Lime-Based Repair Mortars: Paimogo Fort, a Case Study Santos A.; Veiga, M. R.; Santos Silva, A. In order to revitalize and preserve the Paimogo Fort, a Portuguese coastline military fortification built in 1674 and classified as of public interest since 1957, several limebased repair rendering mortars were developed, considering the compatibility requirements with the original ones. In this investigation, the different lime-based mortar compositions proposed are briefly described and their main physical and mechanical characteristics are analyzed at successive ages (28, 90 and 180 days). Furthermore, some applications of the same mortars’ compositions on different porous substrates were carried out and their performances in laboratory and in situ conditions were compared. Finally, the possible degradation mechanisms and the impact of the composition, interaction with the substrate and climatic and environmental conditions on the durability of the mortars are discussed. The main outcomes show that mortars with some content of quicklime result in a balanced solution for the restoration work of the fort; they show an increase of more than 50% of strength compared to slaked air lime mortars, namely when applied on a mediumabsorbent substrate. When applied on very absorbent substrates, although improving the compressive strength and porosity, all lime-based mortar compositions suffer a decrease in their modulus of elasticity and adhesion to the substrate. Air lime mortar compositions applied on a very absorbent and porous substrate generally show an increase in their mechanical strength when subjected to the severe marine environment of the fort. 2025-01-22T00:00:00Z http://repositorio.lnec.pt:8080/jspui/handle/123456789/1018918 Towards Industrial Implementation: Experimental Campaign Based on Variations in Temperature, Humidity, and CO2 Concentration in Forced Carbonation Reactions of Recycled Aggregates Bastos, D.; Farinha, C.; Pederneiras, C.; Veiga, M. R.; Bogas, J.; Infante Gomes, R.; Santos Silva, A. This research presents a sensitivity analysis of various parameters that affect the carbonation of recycled aggregates (RAs), namely CO2 concentration, temperature, and relative humidity. The range of parameter values is close to that found in cement plant chimneys with regard to the forced carbonation of RAs. With this purpose, the main characteristics of flue gas streams (CO2 concentration, temperature, and relative humidity) from two Portuguese cement plants were identified and used in this research. The results indicated that temperatures around 60 ◦C and CO2 concentrations around 25% accelerate the carbonation reaction and increase CO2 absorption in mixed recycled aggregates (MRAs). CO2 absorption consistently decreased as the relative humidity was reduced from 60% to 40%. The highest amount of CO2 captured was by a recycled concrete aggregate (RCA) in the conditions of 23 ◦C, 60% RH, and 25% CO2. Overall, the RAs were able to capture a significant amount of CO2, ranging from 52 to 348 kg of CO2 per tonne of cement paste, depending on the nature of the RA. These findings drawn from a parametric campaign provide valuable insights into the potential enforcement of carbonation for recycled aggregates under conditions that closely reflect those found in cement plants. 2025-04-30T00:00:00Z http://repositorio.lnec.pt:8080/jspui/handle/123456789/1018453 Recuperação e salvaguarda do “genius loci” de um Forte das Memórias – Paimogo, Lourinhã Antunes V.; Menezes, M.; Tomás, C.; Cruz, C.; Liestol, G.; Serra, J. O Projeto “Forte das Memórias” (financiado pelo Programa Europeu EEA Grants) objetiva a revitalização do património (material e imaterial) através da salvaguarda do Forte de Nossa Senhora dos Anjos de Paimogo, Lourinhã (Portugal). Este visa incrementar a cultura comunitária local através da recuperação do conhecimento tecnológico tradicional e da história do lugar. A investigação que está a ser levada a cabo assenta numa dinâmica de interação comunitária que possibilitará dar a conhecer, em contexto expositivo a ser integrado no espaço do Forte, o espírito do lugar. O genius loci será recuperado numa interação direta entre lugar, identidade, comunidade e práticas socioculturais, como tal, lugar-comum, frequentado e apropriado pela comunidade local desde tempos idos. O Projeto contempla a investigação sobre a história e a cultura associadas ao Forte de Paimogo, incluindo entrevistas com moradores locais, pesquisa documental, análise de imagens históricas e outras fontes de informação. O trabalho em curso também inclui a reabilitação do Forte, que será realizada de forma a respeitar a arquitetura e os materiais originais, bem como a instalação de uma exposição permanente que contará a história do Forte e a sua relação com a comunidade local. A exposição será composta por fotografias, audiovisuais e outros materiais coletados durante a pesquisa. O Projeto ainda perspetiva a organização de oficinas e atividades para a comunidade local que se relacionam à história e à cultura do Forte, como palestras e debates, entre outras. O objetivo é contribuir para a consciencialização da importância do Forte e de sua história, promovendo a preservação do património local. O Projeto prevê ainda a criação de um site e de uma plataforma virtual que permitirá à comunidade local acessar e interagir com as informações coletadas durante o processo de pesquisa. Esta plataforma também servirá para ampliar a disseminação dos resultados e atividades do Projeto. 2024-12-01T00:00:00Z http://repositorio.lnec.pt:8080/jspui/handle/123456789/1018451 Connecting the dots in the Coastal Memory Fort at UNESCO Geoparque Oeste Portugal: collaborative efforts in art history and conservation. Antunes V.; Tomás, C.; Liestol, G.; Serra, J.; Ferreira, V.; Mateus, L.; Menezes, M. The Forte das Memórias (Coastal Memory Fort) project aims to revitalise tangible and intangible heritage through the safeguarding of the 17th century fort of Nossa Senhora dos Anjos de Paimogo, Lourinhã (Portugal). Located on the cliffs of Paimogo Beach – a place marked by the historical landing of the Duke of Wellington’s forces during the Napoleonic Wars – the fort stands as a prime example that brings together the best of Portuguese military architecture of former eras. The project endeavours to make this building become a living part of community identity once more. 2024-01-01T00:00:00Z