Effects of the addition of glass fibers, mica and vermiculite on the mechanical properties of a gypsum-based composite at room temperature and during a fire test
Effects of the addition of glass fibers, mica and vermiculite on the mechanical properties of a gypsum-based composite at room temperature and during a fire test
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DOI：
10.1016/j.compositesb.2014.02.019
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发表时间：
2014-06
影响因子：
13.1
通讯作者：
C. Martias;Y. Joliff;C. Favotto
中科院分区：
文献类型：
--
作者：
C. Martias;Y. Joliff;C. Favotto
这项工作提出了热机械实验，其结果导致了一个新的配方复合板的建筑施工。这种板具有重量轻和2小时防火的优点。石膏以β-半水合物形式用作基质，矿物产品（蛭石、云母、玻璃纤维）作为轻质添加剂、机械增强剂和隔热剂加入。在室温下，研究了石膏的粒度分布和添加剂的用量对石膏力学性能的影响。提出并比较了三种方法：实验，分析和数值量化添加剂对力学性能的影响。因此，所获得的结果，包括孔隙率、密度和机械性能，允许保持复合材料的配方。该配方在ISO 834火灾条件下进行测试，以验证其在建筑施工中作为被动保护的用途。
This work presents thermomechanical experiments whose results have led to a new formulation of composite panels for building construction. This panel has the advantage to be lightweight and 2 h firebreak. Plaster, under the β-hemihydrate form, is used as a matrix and mineral products (vermiculite, mica, glass fibers) are added as lightweight additives, mechanical reinforcement and thermal insulator. The both effects of the particles size distribution of plaster, and of the amounts of additives, on the mechanical properties are investigated at room temperature. Three approaches are proposed and compared: experimental, analytical and numerical to quantify the impact of additives on the mechanical properties. Thus, the results obtained, including porosity, density and mechanical property, permit to retain a formulation of composite. This formulation is tested under ISO 834 fire conditions to validate its use as passive protection in building construction.