Conference
Impacts of alkalinity and environmental ageing on fungal growth in hemp concretes
| العنوان: | Impacts of alkalinity and environmental ageing on fungal growth in hemp concretes |
|---|---|
| المؤلفون: | Delannoy, Guillaume, Gueguen Minerbe, Marielle, Nour, Issam, Marceau, Sandrine, Glé, Philippe, Gourlay, Etienne, Diafi, Dinarzed, Amziane, Sofiane, Farcas, Fabienne |
| المساهمون: | Comportement Physico-chimique et Durabilité des Matériaux (IFSTTAR/MAST/CPDM), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Communauté Université Paris-Est, Unité Mixte de Recherche en Acoustique Environnementale (UMRAE), Université de Lyon-Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema)-Université Gustave Eiffel, Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Direction Est (Cerema Direction Est), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), Réunion Internationale des Laboratoires et Experts des Matériaux, Alexandra Bertron, Henk Jonkers |
| المصدر: | RILEM Technical Committee 253-MCI ; Final Conference of RILEM TC 253-MCI: "Microorganisms-Cementitious Materials Interactions" ; https://hal.science/hal-03618345 ; Final Conference of RILEM TC 253-MCI: "Microorganisms-Cementitious Materials Interactions", Réunion Internationale des Laboratoires et Experts des Matériaux, Jun 2018, Toulouse, France. pp.347-353 ; https://www.rilem.net/agenda/final-conference-of-rilem-tc-253-mci-microorganisms-cementitious-materials-interactions-toulouse-france-1107?BO_lang=uk |
| بيانات النشر: | HAL CCSD RILEM Publications |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | PROPAGATION, C-ACTI, CEREMA, MATERIAU BIOSOURCE, BACTERIE, POLLUTION, CONFERENCE, FRANCE, ALTERATION (GEN), CONTAMINATION, MICROORGANISME, MICROBIOLOGIE, BETON DE CHANVRE, [SPI.GCIV.MAT]Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction, [SDV.MP.MYC]Life Sciences [q-bio]/Microbiology and Parasitology/Mycology |
| جغرافية الموضوع: | Toulouse, France |
| الوصف: | RILEM Technical Committee 253-MCI, Toulouse, France, 25-/06/2018 - 26/06/2018 ; Hemp concrete is a building insulation material based on vegetal aggregates and a mineral binder. Due to the lignocellulosic constitution of this material and to the amount of fungi naturally present in hemp, concerns exist about risks of fungal growth, which induce deterioration of the material but also indoor air pollution. In this paper, we focus on the fungal origin on hemp concrete and the fungal growth duringageing. Firstly, the comparison between the fungi population in aggregates and in fresh hemp concrete is done to investigate the capacity of the pH to kill spores present in the material. Secondly, fungal population in concrete is followed for 18 months under a static (50%RH-20°C) and dynamic (variation between 98 and 40% RH - 30°C) ageing protocols. For fresh hemp concrete, the fungal population remains important, despite the alkalinity of the binder. After ageing, no fungal growth is observed, which is explained by the low RH% of the static ageing and of the drying step coupled with the mineralization of vegetal aggregates in the dynamic ageing. Based on these results, no fungal growth should appear in real buildings if the material is well manufactured and without exterior damage. |
| نوع الوثيقة: | conference object |
| اللغة: | English |
| Relation: | hal-03618345; https://hal.science/hal-03618345; https://hal.science/hal-03618345/document; https://hal.science/hal-03618345/file/hal-03618345.pdf |
| الاتاحة: | https://hal.science/hal-03618345 https://hal.science/hal-03618345/document https://hal.science/hal-03618345/file/hal-03618345.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.EDE08517 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |