Influence de la perlite sur le comportement mécanique, l’absorption capillaire et la conductivité thermique des mortiers

Omar Belaribi; Omar Safer; Nadia Belas; Khalil Belguesmia; Rachid Hadj Sadok

doi:10.18540/jcecvl10iss3pp18800

Authors

Omar Belaribi Laboratory of Construction, Transport and Environmental Protection, Department of Civil Engineering, Faculty of Science and Technology, Abdelhamid Ibn Badis University, Mostaganem 27000, Algeria.
Omar Safer Innovative Materials Laboratory and Renewable Energies, Department of civil Engineering, Faculty of Science and Technology, University of Relizane, Bourmadia 48000 Relizane, Algeria.
Nadia Belas Laboratory of Construction, Transport and Environmental Protection, Department of Civil Engineering, Faculty of Science and Technology, Abdelhamid Ibn Badis University, Mostaganem 27000, Algeria.
Khalil Belguesmia Laboratory of Construction, Transport and Environmental Protection, Department of Civil Engineering, Faculty of Science and Technology, Abdelhamid Ibn Badis University, Mostaganem 27000, Algeria.
Rachid Hadj Sadok Department of Technology, Faculty of Sciences and Technology, Djilali Bounaama University, Khemis Miliana, 44225, Algeria. https://orcid.org/0009-0007-9401-6693

DOI:

https://doi.org/10.18540/jcecvl10iss3pp18800

Keywords:

Perlite, Mortars, Capillary Absorption, Thermal conductivity, Compressive strengths.

Abstract

The Algerian soil is rich in natural pouzzolanic materials, such as natural perlite, in the western region more precisely Hammam Boughrara in Maghnia (Tlemcen). Unfortunately, they’re not yet fully exploited. Perlite, thanks to its chemical components, silica and aluminum, which give it interesting properties, has the privilege of being used as an active mineral additiion in the production of cement. This study contributes to more data on the valorization of perlite as a partial substitute for cement. For this purpose, mortars containing different levels of perlite (0%, 10%, 15%, 20% and 25%) were manufactured. The behaviors of the five formulations in the fresh state (consistency, workability and setting time) and in the hardened state (capillary absorption, thermal conductivity and compressive strengths) were studied. The results of the experimental study prove that Maghnia perlite has a positive effect on the properties of mortars. The possibility of using it at dosages up to 25% in order to decrease the rate of cement implies an economic and environmental advantage. In addition, long-term satisfactory mechanical strengths behavior for a 20% perlite rate was noted. Furthermore, mortars containing perlite have low thermal conductivity, which highlights the beneficial effect of perlite as a thermal insulator and the importance of enhancing this addition.