Urban Habitat Constructions under Catastrophic Events: The COST C26 Action

Mazzolani, Federico M.

doi:10.4028/www.scientific.net/amm.82.15

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…In comparison, tourists from neighbouring resort islands mainly go to Fenfushi to visit the Friday Mosque as part of a day excursion, since no tourist accommodation facilities are available on the island. While various studies have focused on geohazards in urban settlements (Borg et al, 2010;De Gregorio et al, 2010;Mazzolani et al, 2010;Narasimhan et al, 2010), the geographical setting of the islands in the Maldives, including Maamigili and Fenfushi, presents a significantly different scenario.…”

Section: Conceptual Frameworkmentioning

confidence: 99%

Vulnerability to disaster in the Maldives: The Maamigili and Fenfushi island communities

Axisa¹,

Borg²,

Ibrahim³

et al. 2023

ISJ

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The relation between vulnerability and environmental threats in islands depends on the geographical conditions of specific islands rather than general assumptions. It is assumed that different island communities may develop different socio-environmental dynamics depending on the ordinary everyday context, which would determine their resilience to real and perceived risks. This research provides data on communities’ perception of their vulnerability to environmental issues, with the objective of understanding the sense of vulnerability of two neighbouring island communities in the Maldives: Maamigili and Fenfushi. The research is based on qualitative and quantitative methods which include semi-structured interviews with national and local entities, and questionnaires distributed among island inhabitants. The study shows that although the islands are located in very similar geographical settings, the socio-environment dynamics within each of the islands determines the communities’ sense of vulnerability. The communities of Maamigili and Fenfushi face different situations and, as such, general assumptions would not address the gaps and needs of communities of specific islands. Even if two islands are relatively close and similar to each other, they still require separate Disaster Risk Reduction strategies so as to address the real and perceived short- and long-term vulnerabilities of the locals as a means to build more resilient communities.

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Section: Conceptual Frameworkmentioning

confidence: 99%

Vulnerability to disaster in the Maldives: The Maamigili and Fenfushi island communities

Axisa¹,

Borg²,

Ibrahim³

et al. 2023

ISJ

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“…The reported casualties and damage due to construction infrastructures' failure urge for effective systems of repair and retrofitting to prevent the sudden occurrence of failure and progressive collapse. [1][2][3][4][5][6] In the USA, American Road and Transportation Builders Association (ARTBA) 7 has reported that more than 47,000 bridges in the country are structurally deficient and in urgent need to repair. Similarly, numerous damaged bridges in various places in the world have been reported as well.…”

Section: Introductionmentioning

confidence: 99%

Susceptibility of strain-hardening cementitious composite to curing conditions as a retrofitting material for RC beams

Khan

Fares

Abbas

et al. 2021

Journal of Engineered Fibers and Fabrics

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Strain-hardening cement-based composites (SHCC) have recently been developed as repair materials for the improvement of crack control and strength of flexural members. This work focuses on strengthening and flexural enhancement using SHCC layer in tensile regions of flexural members under three different curing conditions. The curing conditions simulate the effect of different environmental conditions prevailing in the central and coastal regions of the Arabian Peninsula on the properties of SHCC as a retrofitting material. In this investigation, beams with SHCC layer were compared to control beams. The beams with SHCC layer of 50-mm thickness were cast. The results revealed that the flexural behavior and the load-carrying capacity of the normal concrete beam specimens under hot and dry environmental conditions were significantly reduced, lowering the ductility of the section. However, compressive strength is comparatively unaffected. Similarly, the hot curing conditions have also led to a notable reduction in the loading capacity of the beam with SHCC layer with a slight effect on its stiffness. On the other hand, steam-curing conditions have shown improvement in load-carrying capacity and a reduction in section ductility of the beam with SHCC layer. It was found that the structural unit retrofitted with SHCC layer was a curing-regime dependent as the tensile and strain-hardening properties of SHCC are highly sensitive to the alteration in the cement hydration process. A normal curing regime was found effective and satisfying the practical, cost, and performance requirements. Accordingly, a normal curing regime could be implemented to retrofit reinforced concrete (RC) beams with SHCC layers as recommended in the study.

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“…The approach of risk evaluation could be defined as the correlation and function of the identified hazards, according to the geographic and environmental specificities of heritage assets, and the detailed analysis of their vulnerability (building materials and building structure conservation state). (Stovel, H. 1998), (Accardo, G. et al, 2003), (Mazzolani, F., 2010).…”

Section: Motivationmentioning

confidence: 99%

Documentation Protocols to Generate Risk Indicators Regarding Degradation Processes for Cultural Heritage Risk Evaluation

Kioussi

Καρόγλου

Bakolas

et al. 2013

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Sustainable maintenance and preservation of cultural heritage assets depends highly on its resilience to external or internal alterations and to various hazards. Risk assessment of a heritage asset's can be defined as the identification of all potential hazards affecting it and the evaluation of the asset's vulnerability (building materials and building structure conservation state).Potential hazards for cultural heritage are complex and varying. The risk of decay and damage associated with monuments is not limited to certain long term natural processes, sudden events and human impact (macroscale of the heritage asset) but is also a function of the degradation processes within materials and structural elements due to physical and chemical procedures. Obviously, these factors cover different scales of the problem. The deteriorating processes in materials may be triggered by external influences or caused because of internal chemical and/or physical variations of materials properties and characteristics. Therefore risk evaluation should be dealt in the direction of revealing the specific active decay and damage mechanism both in mesoscale [type of decay and damage] and microscale [decay phenomenon mechanism] level. A prerequisite for risk indicators identification and development is the existence of an organised source of comparable and interoperable data about heritage assets under observation. This unified source of information offers a knowledge based background of the asset's vulnerability through the diagnosis of building materials' and building structure's conservation state, through the identification of all potential hazards affecting these and through mapping of its possible alterations during its entire life-time. In this framework the identification and analysis of risks regarding degradation processes for the development of qualitative and quantitative indicators can be supported by documentation protocols. The data investigated by such protocols help identify the parameters needed for the assessment of the preservation state of a monument and its monitoring through its entire lifetime. The main tool for detecting these indicators is a diagnostic methodology based on appropriate standards that reveals the actual degradation processes responsible of the asset's vulnerability. It is very important that the integration between the material's diagnosis and the overall documentation is taken into consideration in order to identify the required levels of protection and preventive conservation for heritage assets depending on the most frequent local risks. The ranging of risks is therefore necessary according to their importance in each area. Documentation protocols provide with a specific diagnostic tool for materials characterization, decay diagnosis, evaluation process of former conservation materials and interventions, standard procedures for monitoring and control as well as data documentation based on specific guidelines and standards. Implementation and analysis of a "standardised" diagnostic s...

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Urban Habitat Constructions under Catastrophic Events: The COST C26 Action

Cited by 5 publications

References 15 publications

Vulnerability to disaster in the Maldives: The Maamigili and Fenfushi island communities

Vulnerability to disaster in the Maldives: The Maamigili and Fenfushi island communities

Susceptibility of strain-hardening cementitious composite to curing conditions as a retrofitting material for RC beams

Documentation Protocols to Generate Risk Indicators Regarding Degradation Processes for Cultural Heritage Risk Evaluation

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