Compatibility between gypsum and polyamide powder waste to produce lightweight plaster with enhanced thermal properties

被引:55
作者
Gutierrez-Gonzalez, S. [1 ]
Gadea, J. [1 ]
Rodriguez, A. [1 ]
Blanco-Varela, M. T. [2 ]
Calderon, V. [1 ]
机构
[1] Univ Burgos, Dept Construcc Arquitecton & Ingn Construcc & Ter, Burgos, Spain
[2] CSIC, Inst Ciencias Construcc Eduardo Torroja, Madrid 28033, Spain
关键词
Lightweight plaster; Polyamide powder; Wastes; Mechanical properties; Permeability; Porosity; Thermal properties; MECHANICAL-PROPERTIES; PERMEABILITY;
D O I
10.1016/j.conbuildmat.2012.02.061
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This paper presents the results of an experimental study on the use of polyamide powder waste to produce a new lightweight plaster material with improved thermal properties. Plaster blends were prepared using different volumetric proportions of polyamide. The characteristics of the tests specimens were defined and tested by fixing the consistency at a good workability and then determining the mechanical properties, Shore C hardness and the water vapour permeability that correlates with the pore structure obtained with Mercury Intrusion Porosimetry (MIP). The compatibility of the interface zone of materials was analysed using Fast Scanning Electron Microscopy (FSEM), in order to define the effect of the polyamide on the microstructure of the lightweight plaster. Moreover, its thermal behaviour was examined by thermogravimetry and thermal conductivity analysis. Our results show that an increase in the amount of polyamide affects the properties of the plaster, decreasing its density and mechanical properties, as well as increasing its permeability and its thermal resistance. These results confirm that plasters produced with recycled polyamide are comparable to lightweight plasters made with traditional materials. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:179 / 185
页数:7
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