Versão em português
N.º 7
2008
pp. 45-54

 

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Article
Methodology for diagnosis of rendering anomalies due to moisture in walls

Ana Cristian Magalhães1,*, Maria do Rosário Veiga1, C. Pina Santos1, Luís Matias2, António Vilhena1

1 Civil Engineer/Laboratório Nacional de Engenharia Civil, Portugal

2 Physicist/Laboratório Nacional de Engenharia Civil, Portugal

* acristian@lnec.pt

Abstract

Moisture is one of the most powerful causes of decay of historic buildings. A lack of understanding concerning the action of moisture and the resulting degradation mechanisms are often preventing efficient repair of ancient walls. Thus, there is a need to develop and systematise a methodology of diagnosis of defects due to moisture, taking into account the characteristics and properties of materials used on those walls. The use of in situ test methods, especially non-invasive methods, is an important tool, but those methods must be adapted to this particular use, calibrated and interrelated in a global approach. As a result of a Research Project developed at LNEC a methodology involving several phases is proposed, based on tests applied to several case studies and on the analysis of their results. This work synthesises the proposed methodology presenting examples of data combinations for the suggested techniques and its interpretation in order to characterise the state of conservation of renderings and to estimate their performance.

Keywords

Renderings
Ancient walls
Anomalies
Diagnosis
Moisture

Language

English

DOI

10.14568/cp7_6

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Citation

Conservar Património | APA | Chicago | NP405 | ABNT

Conservar Património:
Magalhães, A. C.; Veiga, M. R.; Santos, C. P.; Matias, L.; Vilhena, A., 'Methodology for diagnosis of rendering anomalies due to moisture in walls', Conservar Património 7 (2008) 45-54, https://doi.org/10.14568/cp7_6.

APA:
Magalhães, A. C., Veiga, M. R., Santos, C. P., Matias, L., & Vilhena, A. (2008). Methodology for diagnosis of rendering anomalies due to moisture in walls. Conservar Património, 7 45-54. DOI:10.14568/cp7_6.

Chicago:
Magalhães, Ana Cristian, Maria do Rosário Veiga, C. Pina Santos, Luís Matias, and António Vilhena. 2008. "Methodology for diagnosis of rendering anomalies due to moisture in walls." Conservar Património 7:45-54. doi:10.14568/cp7_6.

NP405:
MAGALHÃES, Ana Cristian [et al.] – Methodology for diagnosis of rendering anomalies due to moisture in walls. Conservar Património. [Em linha]. 7 (2008) 45-54 [Consult. ]. Disponível em WWW: <URL:https://doi.org/10.14568/cp7_6>. ISSN 21829942.

ABNT:
MAGALHÃES, Ana Cristian et al. Methodology for diagnosis of rendering anomalies due to moisture in walls. Conservar Património, Lisboa, v. 7, p. 45-54, 2008. Disponível em: <https://doi.org/10.14568/cp7_6>. Acesso em: .

History

Online: 2017-10-3
Publication: 2009-6-2

References

1 American Society for Non-Destructive Testing, Nondestructive Testing Handbook. Infrared and Thermal Testing (Volume 3), American Society for Non-destructive Testing, Columbus (2001).

2 Henriques, F. M. A., Humidade em paredes, 2nd ed., LNEC, Lisbon (2001).

3 Santos, C. P.; Matias, L.; Magalhães, A. C.; Veiga, M. R., 'Application of thermography and ultra-sounds for wall anomalies diagnosis a laboratory research study', in International Symposium. Non-Destructive Testing in Civil Engineering, Berlin (2003), 16-19.

4 Magalhães, A. C.; Veiga, M. R., 'Comparison of in-situ mechanical tests on masonry mortars: sphere impact and controlled penetration test', in Heritage, Weathering and Conservation Conference, Madrid (2006), 561-567.

5 Borrelli, E., Conservation of Architectural heritage, historic structures and materials salts, ICCROM, Rome (1999).

6 Válek, J.; Veiga, M. R., 'Characterisation of mechanical properties of historic mortars - testing of irregular samples', in Structural Studies, Repairs and Maintenance of Heritage Architecture IX, ed. C. A. Brebbia, A. Torpiano, WIT Press, Southampton (2005), 1743-3509.

7 Veiga, M. R.; Magalhães, A. C.; Bosilikov, V. B., 'Capillary tests on historic mortar samples extracted from site. Methodology and compared results', in 13th International Brick and Block Masonry Conference, Amsterdam (2004).

8 Veiga, M. R.; Aguiar, J.; Santos Silva A.; Carvalho, F., 'Methodologies for characterization and repair of mortars of ancient buildings', in Historical Constructions, ed. P. B. Lourenço, P. Roca, Universidade do Minho, Guimarães (2001) 353-362.

9 Groot, C.; Bartos, P.,;Hughes J., 'Characterisation of old mortars with respect to their repair', in 12th International Brick/Block Masonry Conference, Madrid (2000) 815-827.

10 Magalhães, A. C.; Veiga, M. R., 'Metodologias de diagnóstico de anomalias devidas à humidade em paredes antigas', report 115/08-NRI, LNEC, Lisbon (2008).

11 Magalhães, A. C.; Veiga, M. R., 'Physical and mechanical characterisation of ancient mortars. Application to the evaluation of the state of conservation', Materiales de Construcción (accepted).

12 Magalhães, A. C.; Veiga, M. R., 'Avaliação da resistência de amostras de argamassas históricas recolhidas em obra. Metodologia e correlação de resultados', report 259/06-NRI, LNEC, Lisbon (2006).

13 Santos Silva, A.; Veiga, M. R., 'Degradation and repair of renders in ancient fortresses close to sea', in Medachs - Construction Heritage in Coastal and Marine Environments: damage, diagnostics, maintenance and rehabilitation, LNEC, Lisbon (2008).

14 Veiga, M. R.; Velosa, A.; Magalhães, A. C., 'Experimental Applications of mortars with pozzolanic additions. Characterization and performance evaluation', in Construction and Building Materials 23 (2009) 318-327.

15 Veiga, M. R.; Fragata, A.; Tavares, M.; Magalhães, A. C.; Ferreira, N., 'Revestimentos compatíveis para paredes antigas sujeitas a capilaridade ascendente. Aplicação a um caso de estudo', in 3.º Encontro sobre Patologia e Reabilitação de edifícios, Porto (2009).

16 Onsiteformasonry Project Group, 'On-site investigation techniques for the structural evaluation of historic masonry buildings. Results and research methodologies of on-site for masonry', report, EC Project financed by the European Commission EVK4-CT-2001-00060 (2006).

17 Matias, L.; Vilhena, A.; Magalhães, A. C.; Santos, C. P.; Veiga, M. R., 'Performance of masonry specimens in contact with salt water. Absorption by capillary rise and evaporation phenomena', in 1st International Conference - Construction Heritage in Coastal and Marine Environments. Damage, Diagnosis, Maintenance and Rehabilitation, LNEC, Lisbon (2008).

18 Veiga, M. R.; Aguiar, J., 'Definição de estratégias de intervenção em revestimentos de edifícios antigos', in 1.º Encontro Nacional sobre Patologia e Reabilitação de Edifícios, FEUP, Porto (2003).

Stable url: https://doi.org/10.14568/cp7_6


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