Impact of ETICS on Corrosion Propagation of Concrete Facade

Ilomets, Simo; Kalamees, Targo; Lahdensivu, Jukka; Klõšeiko, Paul

doi:10.1016/j.egypro.2016.09.101

Cited by 8 publications

(5 citation statements)

References 18 publications

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“…For example, 2 million m 2 of prefabricated concrete large panel apartment buildings was built during that period in Estonia and 4.7 million m 2 in Vilnius, Lithuania [37]. This building type needs deep energy renovation because of serious thermal bridges [38], high thermal transmittance of the external walls (U wall = 0.8-1.5 W/(m 2 •K)), insufficient performance of ventilation [39], high indoor humidity loads [40], and corrosion damages of concrete facades [41].…”

Section: Reference Buildingmentioning

confidence: 99%

Development and Performance Assessment of Prefabricated Insulation Elements for Deep Energy Renovation of Apartment Buildings

2020

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A need for the refurbishment and renewal of the existing building stock has been in focus for many decades, principally because of excessive global energy consumption and pollution. This paper presents a methodology and the results of analysis of choices of realizable sets of timber frame prefabricated insulation elements for major renovation of apartment buildings. Numerous combinations of elements with different characteristics were analyzed by applying measurements, interviews, and building performance simulation software, and thereupon their performance, installation eligibility, and concurrent cost levels were compared. Mineral wool board with a special wind barrier facing was found to be the best material as a wind barrier from the perspective of hygrothermal performance. An air and vapor barrier should have sufficient vapor permeability to allow dry-out of constructional moisture. It is possible to renovate apartment buildings to meet the nZEB energy performance requirements and their moisture safety can be guaranteed without paying high relative difference cost. Calculations showed that the global cost was lower for solutions with some mold growth risk. Great care is needed when decreasing costs without simultaneous hygrothermal analyses. The facade cladding was found to have the highest influence on the initial cost of the prefabricated insulation element.

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Section: Reference Buildingmentioning

confidence: 99%

Development and Performance Assessment of Prefabricated Insulation Elements for Deep Energy Renovation of Apartment Buildings

2020

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“…Moisture in the building envelope from atmospheric sources such as rain, fog, mist, dew, and others can threaten the integrity and durability of a building envelope, which, if not treated carefully, can lead to damages and degradation due to, for instance, corrosion [ 48 , 49 , 50 ]. A suitable performance for an envelope must ensure thermal and hygrometric indoor comfort [ 51 ].…”

Section: Biomimicry In Responsive Envelopes and Applicationsmentioning

confidence: 99%

Environmentally Responsive Materials for Building Envelopes: A Review on Manufacturing and Biomimicry-Based Approaches

2023

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Buildings must adapt and respond dynamically to their environment to reduce their energy loads and mitigate environmental impacts. Several approaches have addressed responsive behavior in buildings, such as adaptive and biomimetic envelopes. However, biomimetic approaches lack sustainability consideration, as conducted in biomimicry approaches. This study provides a comprehensive review of biomimicry approaches to develop responsive envelopes, aiming to understand the connection between material selection and manufacturing. This review of the last five years of building construction and architecture-related studies consisted of a two-phase search query, including keywords that answered three research questions relating to the biomimicry and biomimetic-based building envelopes and their materials and manufacturing and excluding other non-related industrial sectors. The first phase focused on understanding biomimicry approaches implemented in building envelopes by reviewing the mechanisms, species, functions, strategies, materials, and morphology. The second concerned the case studies relating to biomimicry approaches and envelopes. Results highlighted that most of the existing responsive envelope characteristics are achievable with complex materials requiring manufacturing processes with no environmentally friendly techniques. Additive and controlled subtractive manufacturing processes may improve sustainability, but there is still some challenge to developing materials that fully adapt to large-scale and sustainability needs, leaving a significant gap in this field.

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“…Table 1 presents the relationship between severity of degradation, S w , and degradation condition, C. A limitation of this classification system is the fact that it does not directly assess the condition of the insulation boards. A damage insulation board can significantly influence the performance of the ETICS [4,10,11]. In this study, the condition of ETICS is analysed based only in visual inspections and, for a strict assessment of the thermal insulation boards, destructive tests must be carried out, which is rarely feasible in practice.…”

Section: Degradationmentioning

confidence: 99%

“…In the last decades, with the increase of awareness of the concept of sustainability and the need of reducing the energy consumption in the construction sector [1], the application of External Thermal Insulation Composite Systems (ETICS) has increased across Europe [2]. ETICS is an insulation system applied directly to façades, composed, in general, of a thermal insulation layer fastened to the substrate, a base coat and a finishing coat [2], being an excellent choice in rehabilitation [3,4]. According to the European Association for ETICS [2], their use decreases thermal transmission through the walls, allowing costs savings from heating and cooling of 50% or more (consequently, a reduction of the CO 2 emissions) and increasing the thermal comfort and indoor air quality of the buildings.…”

Section: Introductionmentioning

confidence: 99%

Condition-Based Maintenance Strategies to Enhance the Durability of ETICS

et al. 2021

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The increase of awareness with sustainability and the desire of reducing the energy consumption in the construction sector haved increased the application of External Thermal Insulation Composite Systems (ETICS) across Europe in the last decades. Nevertheless, the implementation of appropriate maintenance strategies is still neglected. The aim of this study is to analyse the impact of different maintenance strategies. For that purpose, a condition-based maintenance model, based on Petri nets, is used to evaluate three maintenance strategies: MS1—total replacement only; MS2—combination of minor intervention and total replacement; and MS3—combination of cleaning operations, minor intervention, and total replacement. In the end, a multi-criteria analysis is used to discuss the impact of the three maintenance strategies proposed, evaluating the remaining service life, the global costs over time, the ETICS’ degradation condition, and the number of replacements (end of service life) over the time horizon. For this purpose, a sample of 378 ETICS was analysed, based on in situ visual inspections, carried out in Portugal. The results from this study reveal that maintenance plays an important role to increase the durability of ETICS, and therefore their sustainability. Regular maintenance can promote the extension of the ETICS’s service life between 88% and 159% (between 15 to 27 years), improve the global degradation condition of the ETICS, and reduce the impact on users by reducing the number of deeper interventions. Further research is essential to optimise the maintenance strategies (time interval between inspections, stakeholders’ performance criteria, and environmental exposure).

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Impact of ETICS on Corrosion Propagation of Concrete Facade

Cited by 8 publications

References 18 publications

Development and Performance Assessment of Prefabricated Insulation Elements for Deep Energy Renovation of Apartment Buildings

Development and Performance Assessment of Prefabricated Insulation Elements for Deep Energy Renovation of Apartment Buildings

Environmentally Responsive Materials for Building Envelopes: A Review on Manufacturing and Biomimicry-Based Approaches

Condition-Based Maintenance Strategies to Enhance the Durability of ETICS

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