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FUNCTIONAL REHABILITATION OF HERITAGE BUILDINGS BASED ON REINFORCED CONCRETE STRUCTURAL ELEMENTS. CULTURAL/HISTORIC VALUES AND PUBLIC UTILITY TO CONSIDER

Authors:

Abstract

For the definition of conservation and rehabilitation actions in buildings of heritage value, it is necessary to take into account the significant evolution processed in several functional aspects of these buildings. The complexity of the issues involved in conservation and repair of their construction elements and functional rehabilitation requires knowledge in several domains, in order to integrate, in an interdisciplinary and multidisciplinary way, the functional requirements that are needed to be considered. This article focuses attention on the buildings classified as cultural heritage as well as buildings not included in this classification, but which present relevant cultural/historical value or public utility. In both cases targeting the set of buildings that are specifically based on structural concrete elements associated to infill or resistant masonry walls. Relevant aspects of the overall performance of referred heritage buildings are here presented, in particular of their walls and confining elements, concerning the different basic requirements and the other functional requirements.
FUNCTIONAL REHABILITATION OF HERITAGE
BUILDINGS BASED ON REINFORCED CONCRETE
STRUCTURAL ELEMENTS. CULTURAL/HISTORIC
VALUES AND PUBLIC UTILITY TO CONSIDER
José Miranda Dias1, António José Santos2, Armando dos Santos Pinto3, Luís
Manuel Matias4, Teresa O. Santos5
1 Laboratório Nacional de Engenharia Civil (LNEC) , Av. do Brasil 101, 1700-066 Lisboa,
Portugal e-mail: mirandadias@lnec.pt;
2 Laboratório Nacional de Engenharia Civil (LNEC), e-mail: asantos@lnec.pt
3 Laboratório Nacional de Engenharia Civil (LNEC), e-mail: apinto@lnec.pt
4 Laboratório Nacional de Engenharia Civil (LNEC) , e-mail: lmatias@lnec.pt
5 Laboratório Nacional de Engenharia Civil (LNEC) , e-mail: tosantos@lnec.pt
ABSTRACT
For the definition of conservation and rehabilitation actions in buildings of heritage
value, it is necessary to take into account the significant evolution processed in several
functional aspects of these buildings. The complexity of the issues involved in
conservation and repair of their construction elements and functional rehabilitation
requires knowledge in several domains, in order to integrate, in an interdisciplinary and
multidisciplinary way, the functional requirements that are needed to be considered.
This article focuses attention on the buildings classified as cultural heritage as well as
buildings not included in this classification, but which present relevant cultural/historical
value or public utility. In both cases targeting the set of buildings that are specifically
based on structural concrete elements associated to infill or resistant masonry walls.
Relevant aspects of the overall performance of referred heritage buildings are here
presented, in particular of their walls and confining elements, concerning the different
basic requirements and the other functional requirements.
Keywords: Heritage buildings/ Masonry walls/ Reinforced concrete/ Rehabilitation
1 INTRODUCTION
Preservation of Portuguese built heritage, namely the 20th century buildings, has been
gradually highlighted due to the increasing value assigned to this heritage, by the
society, cultural agents and technicians, due to the excellence of the architectural
pieces, materials and construction techniques used. However, this share of buildings
has been increasingly demanding conservation and rehabilitation interventions, due in
large part to the growing degradation of constructive elements, and the need to ensure
an appropriate level of functionality and preservation of this type of buildings, given its
cultural/historic value or public utility. It is appropriate, therefore, to promote specialized
studies of this latest Portuguese built heritage, constructed in the 20th century, due to
its importance and complexity of the issues involved in their preservation and
rehabilitation.
In this article we intend to approach the buildings classified as cultural heritage as well
as buildings not included in this classification (formally belonging to “common
Intangibility Matters International Conference on the values of tangible heritage
385
REFERENCES
INSTITUTO NACIONAL DE ESTATÍSTICA (INE), 2013 O Parque habitacional e a sua
reabilitação - análise e evolução 2001-2011. Lisboa.
Regulamento dos Produtos de Construção, 2011 - Regulamento (UE) n.º 305/2011 do Parlamento
Europeu e do Conselho de 9 de Março de 2011. PT 4.4.2011 Jornal Oficial da União Europeia L
88/33.
|P| - Leis, decretos, etc. Regime jurídico da segurança contra incêndios em edifícios (SCIE).
Decreto-Lei n.º 220/2008 de 12 de Novembro. Lisboa, INCM, 2008.
|P| - Leis e Decretos, etc. Regulamento dos Requisitos Acústicos dos Edifícios (RRAE).
Decreto-Lei n.º 129/2002, de 11 de Maio, alterado pelo Decreto-Lei n.º 96/2008, de 9 Junho. Lisboa,
INCM, 2008.
|P| - Leis e Decretos, etc. Decreto-Lei n.º118/2013, de 20 de agosto. Lisboa, INCM, 2013.
CEN, 2005 Ergonomics of the thermal environment Analytical determination and interpretation of
thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria (ISO
7730:2005). EN ISO 7730:2005.
CEN, 2007 Indoor environmental input parameters for design and assessment of energy
performance of buildings-addressing indoor air quality, thermal environment, lighting and
acoustics. EN 15251:2007.
CEN, 2005 Energy performance of buildings - Energy requirements for lighting: Lighting
energy estimation. Brussels: CEN, 2005. EN 15193:2005.
CEN, 2011 - Light and lighting - lighting of work places - Part 1: indoor work places. Brussels:
CEN, 2011. EN 12464-1:2011.
SANTOS, A. J., 2014 A iluminação natural nos edifícios. Uma perspetiva no âmbito do
conforto ambiental e da eficiência energética". ICT. Lisboa: LNEC, ITE 57
P. JERNBERG, C. SJÖSTRÖM, M.A. LACASSE, E. BRANDT, T. SIEMES, 2004 Guide and
Bibliography to Service Life and Durability Research for Buildings and Components: Part
I Service Life and Durability Re search. CIB W080 / RILEM TC 140.
PAIVA, V.; et al., 1985 Patologia da Construção. Encontro sobre “Conservação e Reabilitação
de Edifícios de Habitação”, Documentos Introdutórios, LNEC, Lisboa.
MIRANDA DIAS, J.L., 2010 Durabilidade de edifícios com estrutura reticulada de betão
armado associada a paredes de alvenaria de preenchimento. Comunicação ao BE2010
Encontro Nacional de Betão Estrutural 2010, LNEC.
MIRANDA DIAS, J. L., 2011 Maximização da vida útil de edifícios recentes do património
existente de interesse relevante. Comunicação ao Simpósio Património em Construção:
Contextos para a sua preservação, LNEC.
396 Lisbon LNEC May 29-30, 2017
Chapter
Material science is one of the interesting areas of specialization in research and development in all fields of engineering, especially all major civil engineering developments can be related to advancement in materials. This also has a significant influence on our ecosystem. In the present study, the principles of green engineering have been demonstrated using the example of heritage buildings that have survived more than 500–700 years with minimal damage. Even though depreciation of material takes place over a period of time, there is a gulf of difference between materials used in present construction and the past mortars and binders used in ancient construction. Most of the heritage monuments require retrofitting, and there is a need to observe the concept and interphase keenly. Present work focuses on the study of heritage materials as microanalysis to get a precise inference about the mortars and binders used in these structures centuries ago. As part of this case study, one sample has been extracted from the ancient structures and were analysed for chemical analysis by Energy dispersive X-ray spectrometry (EDS) to find-out the exact mix proportion of elements in specific volume. Magnesium, silica, and calcium were found to be higher in the samples.
Chapter
Full-text available
In the contemporary research work, the Response Surface Methodology (RSM) is used to simultaneously maximize compressive strength and minimize the absorption of water in the cement mortar (nano materials blended). Three important process parameters including nano silica (0–3wt%), w/c ratio (0.48–0.52wt%), and Plasticizers (0–1wt%) were augmented to acquire the best values of response using the numerical box-behnken design with desirability analysis. The nano silica was replaced by cement in 0%, 1%, 2%, and 3% and water–cement ratios of 0.48, 0.50, and 0.52 with the addition of 1% of polycarboxylate admixture in the cement mortar separately. The research work aims to increase the mechanical properties of cement mortar using nano silica and mineral admixtures. The compression test was carried out using ASTM standard mortar cube to investigate their mechanical properties. The optimal results showed that the nano mortar with 2% nano silica, 0.5 water cement ratio (w/c), and 1% plasticizers, attaining high compressive strength and effectively increasing the mechanical properties of cement mortar.
Conference Paper
Full-text available
RESUMO A utilização da solução de estrutura de betão armado em edifícios, associada em geral a paredes de alvenaria de preenchimento, vulgarizou-se a partir do final da década de quarenta do século passado, vindo-se tornar dominante. Porém, a par da expansão dessa solução, tem-se constatado situações, em número crescente, de anomalias construtivas e funcionais nesse tipo de edifícios recentes. As anomalias em paredes de alvenaria e nos elementos da estrutura de betão armado, traduzem-se na redução da sua durabilidade e, nos casos de significativa gravidade, comprometem a vida útil prevista dos edifícios. Justifica-se, assim, a análise que se pretende efectuar sobre o estado de conservação dos edifícios recentes de betão armado no contexto do parque edificado nacional existente, tendo essencialmente por base os dados estatísticos disponíveis, através da identificação das características construtivas mais comuns desses edifícios, e da apreciação da gravidade das anomalias observadas nos mesmos, e do modo como estas afectam a vida útil destes edifícios e impõem nestes diferentes níveis de necessidade de reparação. Pretende-se, ainda, abordar os aspectos relevantes, relativos à durabilidade desses edifícios, designadamente das paredes de alvenaria e dos elementos de betão armado confinantes.
Conference Paper
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RESUMO: No contexto actual, é largamente reconhecida a necessidade de protecção e conservação do património existente de interesse relevante, constituído essencialmente por edifícios classificados como património de interesse cultural e por outros edifícios não enquadrados nessa classificação, mas cujo valor patrimonial, simbólico, ou de utilidade pública é considerado importante. Do vasto conjunto patrimonial de interesse relevante atrás referido, pretende-se nesta comunicação focar a análise, em particular, sobre os edifícios que apresentam estrutura constituída por elementos de betão armado, convencionalmente designados de edifícios recentes. No âmbito do esforço de protecção e de conservação desse património específico, importa que se procure tipificar os edifícios no contexto do respectivo valor cultural, arquitectónico/ construtivo e funcional, com vista ao estudo de medidas preventivas e/ou curativas mais adequadas que permitam a maximização da vida útil desses edifícios.
Technical Report
Full-text available
This Guide and bibliography has been compiled over the course of the 1997-2002 work programme of the CIB W080 /RILEM 175-SLM Commission and the editors are particularly indebted to the authors for their significant contributions. Thanks is also extended to those who offered contributions, assisted in the review of the documents, and as well to those who provided advice regarding publication or helped prepare the final version of this document. The CIB W080 /RILEM 175-SLM Commission is likewise particularly grateful to the many academic or research organizations that have supported the contributors, authors and editors in this endeavour and sponsored their efforts over the years.
2013 – O Parque habitacional e a sua reabilitação-análise e evolução
  • Instituto Nacional
  • De Estatística
INSTITUTO NACIONAL DE ESTATÍSTICA (INE), 2013 – O Parque habitacional e a sua reabilitação-análise e evolução 2001-2011. Lisboa.
de 11 de Maio, alterado pelo Decreto-Lei n
  • Decreto-Lei N
Decreto-Lei n.º 129/2002, de 11 de Maio, alterado pelo Decreto-Lei n.º 96/2008, de 9 Junho. Lisboa, INCM, 2008.
Ergonomics of the thermal environment – Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria
CEN, 2005 – Ergonomics of the thermal environment – Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria (ISO 7730:2005). EN ISO 7730:2005.
-Indoor environmental input parameters for design and assessment of energy performance of buildings-addressing indoor air quality, thermal environment, lighting and acoustics
CEN, 2007 -Indoor environmental input parameters for design and assessment of energy performance of buildings-addressing indoor air quality, thermal environment, lighting and acoustics. EN 15251:2007.
Energy performance of buildings -Energy requirements for lighting: Lighting energy estimation
CEN, 2005 -Energy performance of buildings -Energy requirements for lighting: Lighting energy estimation. Brussels: CEN, 2005. EN 15193:2005.
CEN, 2011-Light and lighting-lighting of work places-Part 1: indoor work places
CEN, 2011-Light and lighting-lighting of work places-Part 1: indoor work places. Brussels: CEN, 2011. EN 12464-1:2011.
Guide and Bibliography to Service Life and Durability Research for Buildings and Components: Part I -Service Life and Durability Research
  • P Jernberg
  • C Sjöström
  • M A Lacasse
  • E Brandt
  • T Siemes
P. JERNBERG, C. SJÖSTRÖM, M.A. LACASSE, E. BRANDT, T. SIEMES, 2004 -Guide and Bibliography to Service Life and Durability Research for Buildings and Components: Part I -Service Life and Durability Research. CIB W080 / RILEM TC 140.