Versão em português
N.º 26
pp. 11-21


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In situ evaluation of the behaviour of earth-based mortar renders with low additions of limes

Tânia Santos1,2,, Paulina Faria1,2 , António Santos Silva3 

1 CERIS - Civil Engineering Research and Innovation for Sustainability, Av. Rovisco Pais, Lisboa, Portugal

2 Departamento de Engenharia Civil, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal

3 Departamento de Materiais, Laboratório Nacional de Engenharia Civil, Avenida do Brasil, n.º 101, Lisboa, Portugal



Earth mortars are present in several building materials markets because of numerous advantages, particularly economic and ecological. Portugal has a vast earthen built heritage and these mortars are the most suitable for their rehabilitation and conservation. However, although some studies have been carried out on the behaviour of this type of mortars, little is known about their durability when applied outdoors. This study aims to assess the influence of adding low amounts of limes (air lime or natural hydraulic lime) and using washed sand on the durability of earth-based mortars applied as external wall renders. The results obtained did not show any improvement on the mechanical and physical characteristics of earth mortar renders with these additions and the washed sand. Therefore, to improve the performance of this material, namely towards liquid water, other additions, admixtures or surface protections should be studied.


Air lime
Natural hydraulic lime
In situ test



Original title

Avaliação in situ do comportamento de rebocos exteriores de argamassas de terra com baixas adições de cais





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Conservar Património:
Santos, T.; Faria, P.; Silva, A. S., 'Avaliação in situ do comportamento de rebocos exteriores de argamassas de terra com baixas adições de cais', Conservar Património 26 (2017) 11-21,

Santos, T., Faria, P., & Silva, A. S. (2017). Avaliação in situ do comportamento de rebocos exteriores de argamassas de terra com baixas adições de cais. Conservar Património, 26 11-21. DOI:10.14568/cp2016022.

Santos, Tânia, Paulina Faria, and António Santos Silva. 2017. "Avaliação in situ do comportamento de rebocos exteriores de argamassas de terra com baixas adições de cais." Conservar Património 26:11-21. doi:10.14568/cp2016022.

SANTOS, Tânia [et al.] – Avaliação in situ do comportamento de rebocos exteriores de argamassas de terra com baixas adições de cais. Conservar Património. [Em linha]. 26 (2017) 11-21 [Consult. ]. Disponível em WWW: <URL:>. ISSN 21829942.

SANTOS, Tânia; FARIA, Paulina; SILVA, António Santos. Avaliação in situ do comportamento de rebocos exteriores de argamassas de terra com baixas adições de cais. Conservar Património, Lisboa, v. 26, p. 11-21, 2017. Disponível em: <>. Acesso em: .


Received: 2016-10-24
Revised: 2017-2-1
Accepted: 2017-2-16
Online: 2017-3-8


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