Sea & Sustainability

Sea & SustainabilityThe contribution of Civil Engineering

riscoaveiro research centre for risks and sustainability in construction

risco

HORIZON

RISCO research unit:

23 Integrated members

>30 collaborators

• Risk assessment in the built environment and

mitigation measures

• Sustainability in construction and efficiency

of resources in the built environment

• Built heritage conservation and safeguarding

WHO ARE WE?

aveiro research centre for risks and sustainabilityin construction

SCOPE & STRATEGY

Grow through collaborationwith various stakeholders


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Development and application of new technologies

Preservation of traditional solutions and heritage protection

Construction materials and systems development

Urban infrastructure and management (territorial scale)

Well-being and environmental protection

Energy and water efficiency

Smart and eco-efficient materials and systems

Structural integrity and risk assessment

risco aims to promote the

development of sustainable and

resilient cities through safe,

environmentally-friendly, efficient

and durable constructions.


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Off-Shore Structures

Coastal protection and erosion

Risk assessment

Resilient infrastructures and management

Safeguarding of built heritage near the sea

Durability of material and degradation

Water management and efficiency

Energy


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The contributions of RISCO to the theme of “Sea & Sustainability”:

Offshore structures (such as oil rigs) are subjected to marine environment conditions

with salt, sand and water, that are too severe for the corrosion of regular steel. The

stainless steel high corrosion resistance is an advantage on these applications.

In addition, the stainless steel offers an higher fire resistance when compared to carbon

steel, which can be very important for the safety of the workers on the offshore

structures.

The StaSteFi project main objective of improving the knowledge on the fire resistance of

stainless steel structures can thus contribute to a better and more optimize use of this

material on offshore structures.

Fire design of stainless steel members

Application to offshore structures

Researchers: N. Lopes*; P. Vila Real*; F. Arrais

Project: StaSteFi - Fire design of stainless steel members, POCI-01-0145-FEDER-030655, University of Aveiro (UA) and Instituto Superior Técnico (IST-ID)


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Fire design of stainless steel members

Application on offshore structures

Researchers: N. Lopes*; P. Vila Real*; F. Arrais

Project: StaSteFi - Fire design of stainless steel members, POCI-01-0145-FEDER-030655, University of Aveiro (UA) and Instituto Superior Técnico (IST-ID)


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Sand bypassing system at Tweed River (Australia)

Project: Characterization and feasibility study of a multifunctional detached breakwater in front of Vagueira beach

The aim of this project is to perform the mathematical

modelling and study of a submerged detached

breakwater at Vagueira beach.

Bathymetry and topography of the study area.

Dimensional and geographical characteristics of the detachedbreakwater - balance of lost (red) and gained (green) areas.

Forecast of shoreline evolution for reference scenario(Lg = 460 m, Ф = 0⁰, Lqm = 300 m, Ld = 400 m, Kt = 0.6), over 20 years.

Characterization and feasibility study of a

multifunctional detached breakwater - Vagueira beach

Researchers: R. Pombo; C. Coelho*

The work includes the assessment of:

• Hydrodynamics (waves and currents) and

morphodynamics effects around the breakwater;

• Shoreline response to different design scenarios.

Further work will be made to assess the costs and

benefits of the proposed solution.


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The regions located at downdrift of Aveiro and Figueira da Foz harbors present serious erosions

problems due to the sand retention that occurs at updrift.

Sand bypassing systems are structures that allows to artificially restore the longshore sediment

transport, by crossing the harbor breakwaters and navigation channels.

Ave

iro

Project: Feasibility study for implementation of a sand bypassing system at Aveiro and Figueira da Foz

The main goal of the project, commissioned by APA (Agência Portuguesa do Ambiente) is to

study the feasibility of a sand bypassing system at Aveiro and Figueira da Foz.

Feasibility study for implementation of a sand

bypassing system at Aveiro and Figueira da Foz

Sand bypassing system at Tweed River (Australia)

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rad

a F

oz

Researchers: M. Ferreira; C. Coelho*

The Civil Engineering Department is applying different numerical models

(LTC - Long-Term Configuration and CS - Model) in order to access the

impact of the sand bypassing system in the shoreline evolution.

This study is being carried out by a multidisciplinary group.


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Artificial nourishments are a coastal erosion mitigation strategy that consists of human induced addition

of large volumes of sand to a coastal area. However, artificial nourishments are not a permanent

solution, due to the natural sediments' removal from the deposition site, which requires re-nourishment

over time.

Two models applied to identify the performance of different artificial nourishments scenarios:

• LTC (Long-Term Configuration), to simulate the evolution of the shoreline position in a medium/long

term perspective (decades to centuries);

• CS-Model to simulate the cross-shore evolution of the beach profile.

Shoreline position obtain

through LTCPublication: Coelho, C., Ferreira, M., Marinho, B. (2020); “Numerical Modeling of the Artificial Sediment Nourishments Impacts”; Journal of Coastal Research (95): 209-213.

The main goal of the Sandtrack project, led by Department of Physics and financed by FCT, is to apply

an innovative approach to study the performance of artificial nourishments, that includes beachmonitoring and numerical modelling.

Sandtrack – Beach nourishment: an integrated

methodology for coastal management support

Researchers: M. Ferreira; C. Coelho*


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Geosynthetics for coastal protection:

design and long-term performance

The main goals of this PhD research project are:

• Fill the knowledge gaps and contribute with new design methods of coastal defense structures,

mainly based on the case study scenarios identified along the Portuguese coast (wave climate

and exposure conditions);

• Evaluate parameters of efficiency and durability of geotextile tube structures used in coastal

defense, in order to support the responsible entities and decision-makers about the

feasibility/adequacy of the use of this type of structure for coastal protection;

• Develop new and more efficient construction solutions and/or measures to mitigate the instability

and rupture phenomena that is observed through field monitoring and processed data.

PhD research project - Geosynthetics for coastal protection: design and long-term performance

Researchers: F. Galvão; C. Coelho*


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Perform a cost-benefit assessment of intervention strategies for the Portuguese litoral,

in short (2025), medium (2050) and long-term (2100) perspectives;

Evaluate the local social-environmental impacts of the different CCA options;

Develop an economic and participatory model approach to implement the CCA;

Reduce the vulnerability of the coastal territories and increase the resilience of the local

communities.

Integrated Coastal Climate Change

Adaptation for Resilient Communities

Researchers: C. Coelho*

Project: INCCA - Integrated Coastal Climate Change Adaptation for Resilient Communities, POCI-01-0145-FEDER-030842


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Supported by:

Maintenance support strategies for reinforcedconcrete structures under corrosion risk

PhD research project - Maintenance support strategies for reinforced concrete structures under corrosion risk

Researchers: P. Mongelos; F. Rodrigues*; H. Varum

Due to climate change carbonation-induced damage can increase by

more than 16%, corrosion rate could increase by 15%, carbonation

depth could increase by 45% (China), acceleration of the failure time

by 31%.

Extensive experimental campaign over 38 buildings to define

degradation curves of structures for different scenarios (RCP4.5;

RCP8.5);

Calculation of the expected service life and dynamic decision-making

model – Maintenance strategies

Dynamic decision-making model – Maintenance strategies


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Sustainable conservation of traditional

construction buildings near the seaside

This work was concerned with the sustainable conservation of typical

traditional buildings in the Aveiro seaside region - the haylofts (palheiros).

A discussion is made on how sustainability criteria may determine the type of

conservation to help preserve this type of traditional seaside construction.

Haylofts suffer high degradation from maritime influence and have been

submitted to multiple transformations often resulting in its

mischaracterization,

Publication: H. Portela, V. M. Ferreira, A. Velosa, Sustainable Conservation of Traditional Construction Buildings, CINCOS Proceedings, p. 141-151, (2016)

Researchers: H. Portela, A. Velosa*, V. M. Ferreira*


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Ciclos de nevoeiro salino/secagem

0

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0 24 48 72 96 120 144 168 192 216 240 264

Tempo (h)

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T 1

T 2

T 3

AbsT1

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Study of degradation by accelerated artificial ageing tests to

assess durability of ceramic roof tiles in marine environments;

Study of degradation causes and respective solutions for the

attack by salt spray;

Publication: C. Cruz, Behaviour and durability of ceramic roof tiles in a marine environment, PhD thesis, UA, 2010 [supervision: V.M. Ferreira (UA) & R. Veiga, (LNEC)]

Behaviour and durability of ceramic roof

tiles in a marine environment

Researchers: C. Cruz, R. Veiga, V. M. Ferreira*


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Measurement of atmospheric corrosion

effects on metal and stone in coastal locations

Researchers: F. Vidal; R. Vicente*; A. Bastos; J.A.R. Mendes da Silva

Project: TRAPHIC – Traffic related air pollution impacts on historic city centres: an integrated approach

The impact of corrosion and soiling is an impeller for building intervention, and

is a factor causing aesthetic nuisance and therefore accelerate the need for

regular maintenance. Combined atmospheric corrosion leads to the corrosion

of metals and stone recession.

Soiling patterns in building facades.

Dose-response functions developed to estimate annual corrosion rates.

• Understand the influence of pollution impact over traditional

building materials. Compare corrosivity and soling results

between urban areas and a near-coastal location.

• Validation of dose-response functions and suggest changes.

• Calculation of estimated costs of damage – maintenance

strategy.


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Corrosion and soiling effects

Environmental and air pollution impacts

on coastal built heritage

Researchers: F. Vidal; R. Vicente*; A. Bastos; J.A.R. Mendes da Silva

Publication: F. Vidal, R. Vicente; J.A.R Mendes Silva, Review of environmental and air pollution impacts on built heritage: 10 questions, Journal of Cultural Heritage, Vol. 37, 2019


• Redefinition of dose-response functions through multi-regression analysis

• Remapping corrosion in near-coastal areas

• Prediction of maintenance periods and costs


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Characterization of the built environment for natural hazard risk management

Researchers: V. Silva*; H. Lovon


• Most of the building stock in Portugal is located near the coast

• These areas are particularly vulnerable to coastal floods and tsunamis

• It is critical to invest in sustainable disaster risk management solutions


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RESEARCH CENTRES

INDUSTRY

MUNICIPALITIES

OTHER ENTITIES

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Contacts:

[email protected]@ua.pt

collaboration


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Documents

Sea & Sustainability