Redefining the concept of sustainable renovation of buildings: State of the art and an LCT-based design framework

Passoni, Chiara; Marini, Alessandra; Belleri, Andrea; Menna, Costantino

doi:10.1016/j.scs.2020.102519

Cited by 68 publications

(38 citation statements)

References 46 publications

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“…Passoni et al [5] proposed a four-step methodological framework based on the principles of life cycle thinking (LCT) for the holistic renovation of the existing building stock, in which the selection of the optimal retrofit solution is driven by a qualitative multi-criteria decision making (MCDM) approach and by the quantification of economic and environmental impacts of retrofit intervention, duration of works and maintenance.…”

Section: Life Cycle Framework For the Renovation Of The Existing Buimentioning

confidence: 99%

“…The workflow of the methodology is composed of multiple modules, each referring to a specific building life cycle phase, which can be performed individually or in groups depending on the considered scenario. For instance, by not considering in the cost/impact assessment calculations the pre-retrofit modules, the procedure can be readily applied in contexts where the focus is exclusively on the remaining post-retrofit life of the building, i.e., where the costs and impacts associated to the initial construction and pre-retrofit life of the building are not necessarily of pertinence, such as e.g., in Negro et al [4] and Passoni et al [5]. In addition, this modular scheme also allows the possible extension of the framework to any other natural hazard that is relevant within the region of interest (e.g., floods, hurricanes, etc.…”

Section: Introductionmentioning

confidence: 99%

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A Life Cycle Framework for the Identification of Optimal Building Renovation Strategies Considering Economic and Environmental Impacts

et al. 2020

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It is well-known that the existing building stock is responsible for non-renewable resource depletion, energy and material consumption, and greenhouse gas (GHG) emissions. Life cycle analysis (LCA) procedures have thus been developed, in recent years, to assess the environmental impact of construction and operational phases through the entire building life cycle. Furthermore, the economic, environmental, and social consequences of recent natural disasters have encouraged the additional integration of hazard-induced impacts into common LCA procedures for buildings. Buildings are however expected to provide the population with safe living and working conditions, even when hit by different types of hazards during their service life, such as earthquakes. Hence, next-generation LCA procedures should include not only hazard-induced impacts, but also the contribution of potential retrofitting strategies that may alter the structural and energy performances of buildings throughout their remaining service life. This study presents a life cycle framework that accounts for the contributions of initial construction, operational energy consumption, earthquake-induced damage repair activities, potential retrofitting interventions, and demolition (considering also its associated potential material recycling), in terms of both monetary costs and environmental impacts. The proposed methodology can be used to undertake cost-benefit analyses aimed at identifying building renovation strategies that lead to an optimal balance, considering both economic and environmental impacts, between reduction of seismic vulnerability and increase of energy efficiency of a building, depending on the climatic conditions and the seismic hazard at the site of interest.

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Section: Life Cycle Framework For the Renovation Of The Existing Buimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Life Cycle Framework for the Identification of Optimal Building Renovation Strategies Considering Economic and Environmental Impacts

et al. 2020

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“…The aforementioned works highlight how the importance of holistic renovation [10,11] and sustainable building renovation (SBR) [12] principles is becoming more and more recognized in recent years, leading to retrofitting approaches that involve several, or possibly all, building deficiencies. However, the employment of these approaches in current design practice still faces several obstacles.…”

Section: Motivation and Aimsmentioning

confidence: 99%

Seismic and Energy Integrated Retrofitting of Existing Buildings with an Innovative ICF-Based System: Design Principles and Case Studies

et al. 2021

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This work proposes an innovative integrated retrofitting system aiming to improve both the seismic and energy performance of existing reinforced concrete and masonry buildings. The system is based on engineered insulating concrete form panels, installed on the outside of existing buildings as a shell exoskeleton. A key major advantage of the proposed system is that it addresses the contemporary improvement of seismic and energy performances of existing buildings in a single installation stage, operating exclusively from outside of the building. The insulating formworks are ad hoc prefabricated in a factory on the base of the specific geometry of the existing buildings so as to greatly maximize the ratio between overall retrofitting benefits and costs and at the same time to simplify the installation procedures. The objectives of the presented research are, on one hand, to highlight the major structural issues that the system aims to address, and on the other hand to illustrate the main characteristics and combined benefits of the proposed retrofitting system. From a structural point of view, the proposed system is conceived to behave as a non-dissipative structure with regard to seismic actions, and the lateral strength and stiffness of the structural elements are designed accordingly. An analytical design approach is proposed and validated using the available data from an experimental test performed on a full-scale simple building. Moreover, numerical modeling strategies for the proposed system are illustrated for two complex case study buildings. The results of the analyses show a considerable increase in lateral stiffness of the retrofitted buildings that, considering the non-dissipative behavior of the elements, leads to a relevant reduction of seismic deformation demand on existing structural elements.

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“…According to EN15978 [8], 4 main stages should be considered: the product stage, the construction stage, the use stage, and the end-of-life stage, plus the potential life of the building components and material beyond the building's life cycle, in the case of reuse, recovery, and recycling (from cradle to cradle, according to the circular economy (Figure 1)). When life-cycle thinking is adopted as an ex ante design instrument, LCT-based principles may be defined for the design of a sustainable building or solution [9]. Some of these principles are defined in the Level(s) framework [10], in the guidelines for Green Public Procurement (GPP) [11], in the Green Building Rating System credits (e.g., LEED, DGNB, etc.…”

Section: Introduction and Research Motivationmentioning

confidence: 99%

Integrated Deep Renovation of Existing Buildings with Prefabricated Shell Exoskeleton

et al. 2021

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The European goal to reach carbon neutrality in 2050 has further put the focus on the construction sector, which is responsible for great impacts on the environment, and new sustainable solutions to renovate the existing building stock are currently under development. In this paper, the AdESA (Adeguamento Energetico Sismico ed Architettonico, in Italian) system, a holistic retrofit technique for the integrated renovation of the existing buildings, is presented. The system was developed by a consortium of enterprises and universities and was applied to a pilot building. The system consists of a dry, modular and flexible shell exoskeleton technique that implements different layers depending on the building retrofit needs (cross-laminated timber (CLT) panels for the structural retrofit, thermal insulation panels for the energy efficiency amelioration, and claddings for the architectural restyling). In order to foster actual sustainability, the solution contextually targets eco-efficiency, safety and resilience. To this end, the system not only couples the structural and energy interventions to reduce the operating costs, but it is also conceived in compliance with life cycle thinking (LCT) principles to reduce impacts throughout the remaining building service life (from retrofit time to the end of its life). The system is designed to be easily mountable and demountable to allow for the reuse/recycling of its components at the end of life by adopting macro-prefabricated dry components and standardized connections, to reduce damage caused by earthquakes by reducing the allowed inter-story drift, and by amassing the possible damage into sacrificial replaceable elements. The paper describes the AdESA system from a multidisciplinary perspective and its effective application for the deep renovation of an existing gymnasium hall.

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Redefining the concept of sustainable renovation of buildings: State of the art and an LCT-based design framework

Cited by 68 publications

References 46 publications

A Life Cycle Framework for the Identification of Optimal Building Renovation Strategies Considering Economic and Environmental Impacts

A Life Cycle Framework for the Identification of Optimal Building Renovation Strategies Considering Economic and Environmental Impacts

Seismic and Energy Integrated Retrofitting of Existing Buildings with an Innovative ICF-Based System: Design Principles and Case Studies

Integrated Deep Renovation of Existing Buildings with Prefabricated Shell Exoskeleton

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