"Placas pré-moldadas de argamassa armada e casca de arroz".

Abstract

Mato Grosso State is one of the biggest grains-producing of this country. especially rice. This product generates rice husk, with slower environmental degradation time. The idea is the use of rice husk straw "in natura" as alternative material in civil construction. The rice husk straw has been used in energy generation, which promotes a big quantity of ash. The rice husk ash has been reason of several researches due to its high content of amorphous silica. The use of rice husk straw in plate of assembled mortar aims reduce the garbage of rice husk straw, its health and environmental consequences and diseases as silicon disease. This project has as an aim the determination of mechanical properties of assembled mortar peaces executed with cement, sand. lime, rice husk straw and steel screen, with the purpose of application in paneis of vertical close in civil construction in regions that produces rice. The results indicate that the paneis are peaces around 30% lighter than peaces without rice husk straw. The resistance to assembled peaces pressure reduces around 10% with relation to the same mortar without husk straw. It was also observed that it doesn't occur segregation among the mortar components. It was still sawn an acoustic isolating. without formation of echo, observed empirically. and an internai temperature inferior to 4o C. in the rooms built with relation to a room built with conventional wall, it means. of brick and tow. This way can conclude that its use is feasible.