12 documents found, page 1 of 2

An Approach to Accurately Identifying Binders in Historic Mortars by the Combin...

Mortars are among the most important materials in building construction. They are generally obtained by mixing aggregates with an inorganic binder. The identification of mortar constituents, particularly the binder type in historic buildings, is one of the essential aspects of building conservation, considering that the new conservation materials must be chemically, mechanically, and physically compatible with ...

20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings...

This paper addresses the study of renders and plasters’ physical and mechanical characteristics from selected buildings awarded during the 20th century with a renowned architectural prize in Lisbon, Portugal. The characterisation was done to understand mortars’ physical and mechanical properties and their evolution during the 20th century. These characteristics will also help determine compatibility requirement...

Materiais de construção produzidos e usados em Portugal que podem suscitar preo...

RESUMO: Na construção civil, é comum a utilização de materiais geológicos, seja diretamente ou incorporados nos materiais de construção. A presença de radionuclídeos naturais nesses materiais pode resultar em exposição à radiação ionizante, seja por meio da exposição externa à radiação gama ou pela inalação do gás radão. A Agência Portuguesa do Ambiente estabelece medidas adequadas para controlar os materiais d...

Weather ageing effects on the long-term thermal conductivity and biological col...

The use of thermal insulation materials in the opaque walls is one of the best strategies toward the improvement of the thermal performance of the building envelope, thereby contributing to increase the energy efficiency of the built environment. In this context, an increasing number of studies are focusing on the development of mortars with enhanced thermal performance, i.e., thermal insulating mortars. Howeve...

Caracterização de revestimentos de imitação de pedra em stucco-marmo com vista ...

Os revestimentos de imitação de pedra em stucco-marmo constituem uma das técnicas decorativas mais representativas do período Barroco na Europa. Em Portugal, entre meados do século XVIII e meados do século XX, a sua utilização foi bastante mais frequente do que se pensava. A falta de informação relativa a estes revestimentos tem posto em perigo a sua preservação. Com vista a colmatar esta lacuna, foi feito um l...

Materiais de construção com interesse histórico: intermediações entre espaço, t...

Study of mechanical properties of alkaline earth hydroxide nanoconsolidants for...

This research intends to study and optimize successful preparative strategies of nano to sub-micro limes,and to improve their efficiency in the inhibition of the degradation process and in the consolidation of wall renders. In this article we report the synthesis and characterization of nanoparticles based on alkali-earth metal hydroxides, precisely calcium and magnesium hydroxides nanoparticles (Ca(OH)2 and Mg...

Earthen plasters based on illitic soils from Barrocal region of Algarve: contri...

Clayish earth-based mortars can be considered eco-efficient products for indoor plastering since they can contribute to improve important aspects of building performance and sustainability. Apart from being products with low embodied energy when compared to other types of mortars used for interior plastering, mainly due to the use raw clay as natural binder, earth-based plasters may give a significant contribut...

Estudos preliminares para consolidação de suportes com pintura mural: síntese e...

-Resumo Neste trabalho apresentam-se os resultados da síntese e da caracterização de nano-materiais de hidróxido de cálcio e de hidróxido de magnésio visando a sua aplicação como consolidantes de suportes com pintura mural. Este estudo preliminar constitui a etapa inicial de um projeto em curso e que tem como principal objetivo o desenvolvimento de novas estratégias de síntese de nano-materiais inovadores para ...

Consolidation and chromatic reintegration of historical renders with lime-based...

Historical renders are exposed to several degradation processes that can lead to a wide range of anomalies,such as scaling, detachments, and pulverization. Among the common anomalies, the loss of cohesion and of adhesion are usually identified as the most difficult to repair; these anomalies still need to be deeply studied to design compatible, durable, and sustainable conservation treatments. The restitution o...