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Description Of Wall
Rastra is a 10-in. thick concrete form system
made of a lightweight concrete, which provides a permanent framework
for a grid of reinforced concrete that forms load-bearing walls,
shear walls, stem walls, lintels, retaining walls, and other components
of a building. Rastra wall forms are made of light weight EPS beads’
concrete of density about 20 to 30 lb/ft 3. At the construction
side, Rastra lightweight concrete forms are filled with high-density
reinforced structural concrete.
During September 1998, a 8x8-ft Rastra wall
was hot-box tested at ORNL BTC utilizing ASTM C236-89
experimental procedure. Normally, the Rastra wall is covered by
lightweight stucco on the outside and plaster on the inside, however,
hot-box testing an unfinished wall was utilized.
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