Life Cycle Assessment of Retrofitting Large Prefabricated Panels Low-Rise Collective Dwellings

3rd World Multidisciplinary Civil Engineering, Architecture, Urban Planning Symposium

土木建筑工程;文学

Ungureanu, Viorel^1^2 ; Muntean, Daniel M.^2

Laboratory of Steel Structures, Romanian Academy-Timisoara Branch, Timisoara, Romania^1

Politehnica University Timisoara, Department of Steel Structures and Structural Mechanics, Ioan Curea 1, Timisoara

300224, Romania^2

关键词: Built environment;    Energy savings potential;    Environmental loads;    Impact on the environment;    Life Cycle Assessment (LCA);    Precast concrete components;    Prefabricated panel;    Selection of materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/471/11/112070/pdf
DOI  :  10.1088/1757-899X/471/11/112070

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

During the 1970s, the urban landscape of the major cities in Romania has suffered significant changes. The rapid growth of the urban population, even doubled in some cases has led to an increased demand on the housing market. In order to quickly provide new homes, standard housing units using large reinforced precast concrete components (LRPCC) were used. Today, these units' house more than half of the urban population. Buildings have a high energy demand during their life cycle starting from construction to demolition and are one of the main factors responsible for the negative impact on the environment. Therefore, applied LCA strategies on the built environment, in the last years, has developed into a distinct working area within other LCA practices. This is not only because of the complexity of a building but also due to numerous factors that make this sector so unique. Firstly, buildings are designed to have a long lifetime, usually more than 50 years. Currently LRPCC housing units have not yet even reached half of their intended lifespan and are now failing to meet the modern living standards. Secondly, with the constant changes of daily routines, social lifestyle and needs, buildings usually undergo changes in their forms and functions. This aspect can be as significant or more, than the original element. Third, a building has the highest impact on the environment during its use. Therefore, proper design and selection of materials are important to minimize the in-use environmental loads. LRPCC buildings have a huge energy savings potential and because they are project types, extensive retrofitting strategy on the whole building, extending to the community, can be implemented. By taking the ISO 14040 and 14044 standards into consideration, a Life Cycle Assessment on energy efficiency is carried out on a chosen LRPCC collective housing unit in four distinct phases following an iterative process, to evaluate the behaviour of the building components, materials and systems before and after the retrofitting process.