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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2026-06-11 23:58 |
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Conference: Bucharest University Faculty of Physics 2026 Meeting
Section: Physics and Technology of Renewable and Alternative Energy Sources
Title:
Energy performance optimization of buildings through clay-based construction and finishing materials
Authors:
Marcela STOENESCU, Sanda VOINEA
Affiliation:
University of Bucharest, Faculty of Physics, 405 Atomiștilor str., PO Box MG-38, Bucharest-Măgurele, România
E-mail
marcela.stoenescu@gmail.com
Keywords:
Clay-based building materials, thermal and acoustic performance, energy efficiency
Abstract:
Clay-based building materials (adobe - sun-dried bricks, cob - monolithic walls, rammed earth) have been used for thousands of years and, along with wooden constructions, represent solutions made from natural and sustainable materials, with a reduced impact on the environment. In this paper, we analyze some construction and finishing materials based on clay, sand, plant fibers and water. Cob and clay-based plasters have been a solution for constructions since ancient times, in recent years these construction materials have been increasingly common due to the undeniable advantages they offer: 100% natural materials, humidity regulation, thermal and acoustic performance, low costs, low CO₂ emissions
For this study, we prepared samples from different clay-based materials (construction material, finishing material in construction and a joint filler). We determined the humidity of the samples at different temperatures as well as the thermal conductivity. Clay has a lamellar mineral structure and a large specific surface area, which is why the absorption and desorption capacity of this natural material is high. The hygroscopic behavior of clay-based materials is strong, which gives buildings made of these materials a comfortable and healthy indoor climate. Clay-based materials reduce energy consumption by managing water evaporation, thus contributing to reducing environmental impact, contributing to operational energy efficiency and in addition they are 100% recyclable
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