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Communication Dans Un Congrès Année : 2021

Fire Behavior of Raw Earth Bricks: Influence of Water Content and Cement Stabilization

Résumé

This study focus on the effects of both water content and cement stabilization on the fire behavior of earth bricks. To observe the effect of cement stabilization, two materials are formulated: raw earth with only soil and water, and stabilized bricks with soil, water and cement (3.5% by mass of soil). Since the material’s mechanical strength can strongly influence its fire behavior, the raw bricks were compacted at 50 MPa to reach a compressive strength similar to the one of stabilized bricks. Four different water contents were tested; dry state obtained with oven drying and three others achieved through equalization at 50%, 75% and 100% of relative humidities. Bricks are then subjected to an ISO 834-1 standard fire. Results show that water content has caused a thermal instability behavior on the raw earth bricks after equalization at 50% and 75% relative humidities. Thermally stable bricks displayed a noticeable diffusion of cracks on their heated face. Furthermore, cement stabilization helps to prevent from thermal instabilities.

Domaines

Génie civil
Fichier non déposé

Dates et versions

hal-04312684 , version 1 (28-11-2023)

Identifiants

Citer

Rafik Isaam Abdallah, Céline Perlot, Hélène Carré, Christian La Borderie, Haissam El Ghoche. Fire Behavior of Raw Earth Bricks: Influence of Water Content and Cement Stabilization. 4th International Conference on Bio-Based Building Materials, Jun 2021, Barcelona, Spain. pp.792-800, ⟨10.4028/www.scientific.net/CTA.1.792⟩. ⟨hal-04312684⟩

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