Evaluarea durabilităţii materialelor de construcţie expuse condiţiilor de laborator prin testare în mediu simulat
Evaluation os sustainability of construction materials exposed to lab conditions by testing in simulated environments

Author(s): Marius MÂRŢ, Florina FILIP, Monica Cherecheş,, Adrian-Alexandru Ciobanu, Aurelia Bradu
Subject(s): Architecture
Published by: INCD URBAN-INCERC
Keywords: building envelopes; thermal conductivity; aging; thermal behavior
Summary/Abstract: In the context of the built environment, the energy consumption of a building is strongly dependent on the characteristics of its envelope. The thermal performance of external walls represents a key factor that can improve the energy efficiency of buildings. Thermal insulation materials play an important role in this scenario, by taking into account the characteristics of the insulation layer. High-quality materials must retain their characteristics as in the early stages, not only in terms of thermal insulation properties, but also through the ability to withstand long-term operating loads without a significant change throughout lifetime. This concept is applied at the material level, at the system level and at the building level. Materials obtained from petrochemicals as polystyrene or from natural sources processed with high-energy consumptions such as glass and rock wools, are commonly utilized for the insulation of buildings. From the perspective of sustainable development, the lack of durability of the insulation materials can lead to the failure of the envelope system, so that must be understood in quantitative terms. The aim of the paper is to establish the evolution of deterioration over time (long-term decrease in thermal resistance) and how the durability of insulating materials is influenced in supporting a long-term performance regime. The study also evaluates current research on the durability of insulating materials in the context of the technical aspects of laboratory tests.

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