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Open Access
Article
Publication date: 29 September 2022

Mónica Moreno, Rocío Ortiz and Pilar Ortiz

Heavy rainfall is one of the main causes of the degradation of historic rammed Earth architecture. For this reason, ensuring the conservation thereof entails understanding the…

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Abstract

Purpose

Heavy rainfall is one of the main causes of the degradation of historic rammed Earth architecture. For this reason, ensuring the conservation thereof entails understanding the factors involved in these risk situations. The purpose of this study is to research three past events in which rainfall caused damage and collapse to historic rammed Earth fortifications in Andalusia in order to analyse whether it is possible to prevent similar situations from occurring in the future.

Design/methodology/approach

The three case studies analysed are located in the south of Spain and occurred between 2017 and 2021. The hazard presented by rainfall within this context has been obtained from Art-Risk 3.0 (Registration No. 201999906530090). The vulnerability of the structures has been assessed with the Art-Risk 1 model. To characterise the strength, duration, and intensity of precipitation events, a workflow for the statistical use of GPM and GSMaP satellite resources has been designed, validated, and tested. The strength of the winds has been evaluated from data from ground-based weather stations.

Findings

GSMaP precipitation data is very similar to data from ground-based weather stations. Regarding the three risk events analysed, although they occurred in areas with a torrential rainfall hazard, the damage was caused by non-intense rainfall that did not exceed 5 mm/hour. The continuation of the rainfall for several days and the poor state of conservation of the walls seem to be the factors that triggered the collapses that fundamentally affected the restoration mortars.

Originality/value

A workflow applied to vulnerability and hazard analysis is presented, which validates the large-scale use of satellite images for past and present monitoring of heritage structure risk situations due to rain.

Details

International Journal of Building Pathology and Adaptation, vol. 42 no. 1
Type: Research Article
ISSN: 2398-4708

Keywords

Article
Publication date: 9 November 2021

Camilla Mileto and Fernando Vegas López-Manzanares

This research aims to highlight the values, principles and recommendations for conservation in order to establish valid strategies for the conservation of earthen built heritage…

Abstract

Purpose

This research aims to highlight the values, principles and recommendations for conservation in order to establish valid strategies for the conservation of earthen built heritage. This is done following a methodology which uses indirect (bibliography) and direct (case study) sources systematically analysed from different perspectives: the values of Earth as a material and of architectural and vernacular heritage; the heritage conservation principles found in international documents; and the analysis of over 3,000 case studies from which good practices in earthen architecture conservation are extracted.

Design/methodology/approach

Earthen built architectural heritage is found widely in all parts of the world, in archaeological sites and monumental and vernacular architecture, which research centres and researchers are increasingly studying and cataloguing. However, despite its richness and historic and cultural values, as well as its many merits in environmental sustainability, sociocultural and socio-economic terms, the value of this heritage has not been fully recognized in fields with major repercussions in conservation.

Findings

Finally, these data are cross-referenced to establish the broadest possible strategies to guarantee all aspects to be taken into account in the conservation of earthen built architectural heritage.

Originality/value

The text provides an overview of the different methodologies in order to extract specific strategies applicable to the conservation of this heritage, both locally and globally.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. 12 no. 2
Type: Research Article
ISSN: 2044-1266

Keywords

Article
Publication date: 21 October 2021

Masoud Nakhaei Ashtari and Mariana Correia

The aim of this research is to evaluate the vulnerability of earthen heritage when facing climate change, by focusing on Tchogha Zanbil site as a case study – an outstanding…

Abstract

Purpose

The aim of this research is to evaluate the vulnerability of earthen heritage when facing climate change, by focusing on Tchogha Zanbil site as a case study – an outstanding example of an earthen site that recurrently faces extreme climatic events. Moreover, the adaptive capacity of traditional knowledge and ancient systems is also evaluated, in order to contribute for future climate change adaptation planning.

Design/methodology/approach

The vulnerability of cultural heritage to climate change was considered as the degree to which an identified cultural heritage value was susceptible to, or would be adversely affected by, the effects of climate change, including climate variability and extreme temperatures. In order to establish a vulnerability assessment, this paper will assess different definitions regarding vulnerability, exposure and sensitivity, crossing it with indicators of physical parameters, in order to propose an adaptive capacity for the site, based on ancient traditional knowledge.

Findings

Nonetheless, the entailed research helped establish a framework that contributes to outline the vulnerability and the potential for adaptive capacity of World Heritage properties, especially earthen sites located in regions exposed to rising climate change impact.

Research limitations/implications

The research faced some limitations regarding access to data and to site visits, due to COVID-19 restrictions that were in place.

Originality/value

This research presents a methodological assessment of climate change risk in Tchogha Zanbil, a World Heritage earthen site in Iran, representative of a property highly exposed to risk and vulnerability.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. 12 no. 2
Type: Research Article
ISSN: 2044-1266

Keywords

Article
Publication date: 25 July 2020

Amin Alvanchi, Zahra Bajalan and Pooya Iravani

Dams require high-volume of construction materials and operations over the life cycle. This paper aims to select a proper type of dam structure that can significantly contribute…

Abstract

Purpose

Dams require high-volume of construction materials and operations over the life cycle. This paper aims to select a proper type of dam structure that can significantly contribute to the sustainability of dam projects.

Design/methodology/approach

This research proposes a complementary fuel consumption and carbon dioxide (CO2) emission assessment method for the alternate dam structure types to assist decision-makers in selecting sustainable choices. Related equations are developed for two common earthen and rock-fill dam structures types in Iran. These equations are then successfully applied to two real dam project cases where the significance of the achieved results are assessed and discussed.

Findings

The achieved results of the case studies demonstrate a high deviation of up to 41.3% in CO2 emissions comparing alternate dam structure scenarios of earthen and rock-fill dam structures. This high deviation represents an important potential for CO2 emission reduction considering the high volume of the emission in large dam projects.

Originality/value

The life cycle emission assessment of the alternate dam structures, proposed in this research as a novel complementary factor, can be used in the decision-making process of dam projects. The results in this research identify high potential sustainability improvement of dam projects as a result of the proposed method.

Article
Publication date: 1 December 2005

Marian Głażewski and Andrzej Eymontt

Proposes to discuss the implementation of biological methods of the reinforcement and protection of slopes and dissemination to designers and builders of earthen structures.

Abstract

Purpose

Proposes to discuss the implementation of biological methods of the reinforcement and protection of slopes and dissemination to designers and builders of earthen structures.

Design/methodology/approach

The methodology of the process developed consists of field experiments including plant selection, preparation of the slope, hydroseeding mass composition, structure and rheological properties, as well as observation of the growing process and proper management of the layer covering. Laboratory tests and field experiments were conducted.

Findings

The research results confirm that covering slopes with a hydroseeding layer contributes to a reduction of the erosion process. The most important effect of the protection process is the creation of favorable conditions for seedlings growing in the third leaf phase with the effect of compact green cover.

Practical implications

The research results could be an important basis for the development of legislation acts related to road building, including proper slope management, together with seeding, underseeding and prototechnical operations that should be done during the first two years for both shaded and sunny slopes. The next step should be the training of designers and builders, and implementation of the technology.

Originality/value

This technology is new in Poland. The authors have realized several hundred slopes with this technology. However, for further improvement of slopes, protection was a necessary realization of the research discussed in the paper.

Details

Management of Environmental Quality: An International Journal, vol. 16 no. 6
Type: Research Article
ISSN: 1477-7835

Keywords

Article
Publication date: 15 November 2018

Niloofar Mohtat and Akbar Haji Ibrahim Zargar

Focusing on Rudak, a village destroyed in the Buin-Zahra earthquake of 1962 in Qazvin, Iran, this paper aims to evaluate the reconstruction of this village in terms of…

Abstract

Purpose

Focusing on Rudak, a village destroyed in the Buin-Zahra earthquake of 1962 in Qazvin, Iran, this paper aims to evaluate the reconstruction of this village in terms of sustainability. Rudak reconstruction has left long-term consequences on the physical structure of the village, as some of the people refused the constructed houses and built their own ones. Hence, after more than 50 years, this village is now consisted of two physically different neighborhoods. Examining the long-term consequences of this reconstruction through comparing housing and physical structure of the two different neighborhoods contains valuable lessons in terms of sustainability because sustainable reconstruction results unveil in long term.

Design/methodology/approach

Using sustainable reconstruction theory as the conceptual framework, this research investigates social, economic and environmental sustainability of Rudak housing reconstruction and that leads to comprehensive lessons. The study has a qualitative method and is based on fieldwork allowing for dynamic interviews with the community. Furthermore, data are analyzed through descriptive and comparative approaches.

Findings

The research concluded that sustainability related implications of post-disaster reconstruction policies are not restricted to the time of reconstruction or a limited interval after that. Lack of livelihood considerations, providing all people with similar houses and nontransparent decisions, resulted in unsustainable consequences such as building vulnerable extensions by people, social segregation and people unwillingness for participation. However, this experience was sustainable in terms of some other factors. For example, using local materials for building the structures of the new houses, putting the houses on the natural bedrock and building public services for people were sustainable measurements.

Originality/value

This paper is a rare example of research focusing on impacts of post-disaster reconstruction after more than 50 years. It contains valuable lessons for planners and architects.

Details

International Journal of Disaster Resilience in the Built Environment, vol. 9 no. 4/5
Type: Research Article
ISSN: 1759-5908

Keywords

Article
Publication date: 19 July 2021

Mohamed Ali Mohamed Khalil and Eman Hanye Mohamed Nasr

The study aims to analyze the development of Omani heritage legislation against the UNESCO World Heritage Convention (WHC), 1972 and WHC Operational Guidelines (WHC-OGs) to…

Abstract

Purpose

The study aims to analyze the development of Omani heritage legislation against the UNESCO World Heritage Convention (WHC), 1972 and WHC Operational Guidelines (WHC-OGs) to predict the possible effects of the recent developments on the management of the World Heritage Site in Oman.

Design/methodology/approach

This study discusses the development of the heritage protection legislation in Sultanate of Oman since 1970; it analyses the Omani Cultural Heritage Law 35/2019 against the recommendations of the UNESCO WHC as well as the requirements of the World Heritage Operational Guidelines. Moreover, the research investigates the possible effects of the recent heritage legislation developments on the management of Bahla Fort and Oasis in Oman, which is the first Omani World Heritage Site and the only site with special management regulations.

Findings

The paper outlines the effects of both the Omani Cultural Heritage Law 35/2019 and the Special Management Regulations 81/2019 on the implementation of the Bahla Management Plan. Additionally, the research establishes how the customization of heritage legislation as a special heritage management regulation facilitates the implementation of national legislation to solve specific local problems.

Originality/value

The study establishes the significance of developing comprehensive legislation to protect and manage the rich Omani cultural heritage and World Heritage Sites in alignment with the WHC and the WHC-OGs.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. 13 no. 1
Type: Research Article
ISSN: 2044-1266

Keywords

Article
Publication date: 17 May 2013

Nivin M. Ahmed, Hassan S. Emira and Hesham M. Tawfik

Ion‐exchange clays containing sodium such as bentonite and montmorillonite have the ability to exchange their cations. Few studies conducted with this type of ion‐exchange…

Abstract

Purpose

Ion‐exchange clays containing sodium such as bentonite and montmorillonite have the ability to exchange their cations. Few studies conducted with this type of ion‐exchange pigments are not conclusive about their anticorrosive efficiency. The present research aims to address the study on the anticorrosive efficiency of this type of pigments in chlorinated rubber paints. Sodium‐bentonite was exchanged with Zn, Sr and Zn‐Sr to be applied on low carbon steel specimens and study the anticorrosive performances of these new ion‐exchanged bentonites (IEBs) in anticorrosive paint formulations.

Design/methodology/approach

The new pigments were characterised using scanning electron microscopy (SEM) and X‐ray fluorescence (XRF) to determine the CEC (cation exchange capacity) of the different exchanged cations. Evaluation of the ion‐exchanged and Na‐bentonite pigments using international standard testing methods (ASTM) was estimated. Paint systems manufactured with these ion‐exchange pigments have been subjected to adhesion, accelerated corrosion laboratory tests, and EIS in order to assess their anticorrosive behaviour.

Findings

The results of this work revealed that the ion‐exchange bentonite (IEBs) pigments showed high anticorrosive performance that can be arranged as follows: Sr‐bentonite was better than Zn‐Bentonite and both were better than the double Zn‐Sr‐bentonite indicating an antagonism behaviour between the two cations when present together.

Practical implications

These pigments can be applied in other polymer composites, e.g. rubber and plastics as reinforcing agent and fillers.

Originality/value

These prepared pigments are environmentally friendly pigments which impart high anticorrosive behaviour to paint films with great economic savings.

Details

Pigment & Resin Technology, vol. 42 no. 3
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 7 March 2016

Richard Regueiro, Zheng Duan and Beichuan Yan

– The purpose of this paper is to develop a concurrent multiscale computational method for granular materials in the quasi-static loading regime.

Abstract

Purpose

The purpose of this paper is to develop a concurrent multiscale computational method for granular materials in the quasi-static loading regime.

Design/methodology/approach

Overlapped-coupling between a micropolar linear elastic one-dimensional (1D) mixed finite element (FE) model and a 1D chain of Hertzian nonlinear elastic, glued, discrete element (DE) spheres is presented. The 1D micropolar FEs and 1D chain of DEs are coupled using a bridging-scale decomposition for static analysis.

Findings

It was found that an open-window DE domain may be coupled to a micropolar continuum FE domain via an overlapping region within the bridging-scale decomposition formulation for statics. Allowing the micropolar continuum FE energy in the overlapping region to contribute to the DE energy has a smoothing effect on the DE response, especially for the rotational degrees of freedom (dofs).

Research limitations/implications

The paper focusses on 1D examples, with elastic, glued, DE spheres, and a linear elastic micropolar continuum implemented in 1D.

Practical implications

A concurrent computational multiscale method for granular materials with open-window DE resolution of the large shearing region such as at the interface with a penetrometer skin, will allow more efficient computations by reducing the more costly DE domain calculations, but not at the expense of generating artificial boundary effects between the DE and FE domains.

Originality/value

Open-window DE overlapped-coupling to FE continuum domain, accounting for rotational dofs in both DE and FE methods. Contribution of energy from micropolar FE in overlap region to underlying DE particle energy.

Book part
Publication date: 2 May 2018

Eric Spears

On November 4, 2015, the Fundão Dam in the Brazilian state of Minas Gerais suffered a catastrophic failure and released 60 million cubic meters of toxic, iron-laden mud into the…

Abstract

On November 4, 2015, the Fundão Dam in the Brazilian state of Minas Gerais suffered a catastrophic failure and released 60 million cubic meters of toxic, iron-laden mud into the Rio Doce – a major river system that serves 3.6 million people in the Southeast. Owned by Samarco, a joint venture between Brazil’s Companhia do Vale do Rio Doce (CRVD) and Australia’s BHP Billiton Industries, the Fundão Dam was one of the largest mining-oriented water reservoirs in the country. This disaster was identified by IBAMA, the country’s environmental protection agency, as the worst environmental event in Brazil’s industrial history. The disaster’s ramifications continue to unfold, affecting people, wildlife, and ecosystems along the river’s 530-kilometer route through Minas Gerais and Espírito Santo to the Atlantic Ocean. This paper contextualizes the Samarco disaster and its socioecological consequences in a political ecology framework. Specifically, this theoretical research is poised within a politics of scale paradigm. Theory is used to explain the long-standing contradictions between capital and nature through an examination of the Samarco disaster. Specifically, scalar theory explains how capital–nature contradictions facilitated the disaster and Brazil’s on-going struggle to respond to environmental justice at local scales.

Details

Environment, Politics, and Society
Type: Book
ISBN: 978-1-78714-775-1

Keywords

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