During decades, gypsum has been employed as construction material for its versatility and particle size. In the present work, the possibility of developing gypsum panels with the incorporation of pumice and polypropyl...During decades, gypsum has been employed as construction material for its versatility and particle size. In the present work, the possibility of developing gypsum panels with the incorporation of pumice and polypropylene as alternative materials has been investigated. Pumice as well as polypropylene allows obtaining lighter panels than those on the market and with a lower production cost. Each one of these materials was characterized separately. In the case of gypsum and pumice, their granulometry, pH and humidity were determined, whereas polypropylene was characterized by a traction-deformation essay. Then, panels composition （gypsum and pumice concentration）, particle size, water temperature and the way polypropylene was added, was assessed. Panels with a 70% of gypsum, with a particle size of 198 btm and with polypropylene added in a laminar fashion, presented a compressive strength of 350 kPa, which accords to the norm ASTM 1396 and with market requirements. Finally, it was proposed a block diagram of the process for the fabrication of 100 kg/day of formulated panels.展开更多
文摘During decades, gypsum has been employed as construction material for its versatility and particle size. In the present work, the possibility of developing gypsum panels with the incorporation of pumice and polypropylene as alternative materials has been investigated. Pumice as well as polypropylene allows obtaining lighter panels than those on the market and with a lower production cost. Each one of these materials was characterized separately. In the case of gypsum and pumice, their granulometry, pH and humidity were determined, whereas polypropylene was characterized by a traction-deformation essay. Then, panels composition （gypsum and pumice concentration）, particle size, water temperature and the way polypropylene was added, was assessed. Panels with a 70% of gypsum, with a particle size of 198 btm and with polypropylene added in a laminar fashion, presented a compressive strength of 350 kPa, which accords to the norm ASTM 1396 and with market requirements. Finally, it was proposed a block diagram of the process for the fabrication of 100 kg/day of formulated panels.
