Alexandra Ungureanu, Dorina Nicolina Isopescu , Sebastian-George Maxineasa, Ioana
Roxana Vizitiu-Baciu, Sergiu-George Petre
DOI: 10.2478/ouacsce-2024-0001
Pages: 01-09
Abstract – There is a global concern for reducing energy consumption and
protecting the environment. The use of products with high thermal resistance, to
make the envelope of a building, favors the reduction of energy consumption for
heating/cooling of building and, implicitly, the reduction of CO2 emissions. The
replacement, total or partial, of the basic components of the concrete compositions,
can lead to the obtaining of innovative products with modified physical-mechanical
properties, which meet the energy efficiency requirements of buildings. The study
examines the effect of replacing the volume of sand in percentages of 10%, 20%, 30%
and 100% with an equivalent volume of perlite, and the results have underlined that
these compositions reduced density and thermal conductivity, compared to the
reference concrete. The research carried out has emphasized that perlite can be
successfully introduced in the production of concrete blocks used for non-load-bearing
external wall panels, the outstanding feature being the reduced their thermal
conductivity and weight. The paper identifies solutions for the use of perlite in the
prefabricated construction industry.
Keywords – concrete blocks, perlite, prefabricated construction industry,
sustainability.
