Description Of Wall
The Arxx wall system (formerly known as
AAB Building System's Blue Maxx) consists of interlocking, lightweight
expanded polystyrene forms. Hot box tests were performed to determine
steady-state thermal performance of the clear wall area of the AAB
Bluemaxx wall systems with 11-1/2 -in. thick expanded polystyrene
(EPS) foam wall forms. AAB Bluemaxx wall forms are made of 2-1/2-in.
EPS foam shells with a density of app. 1.6 lb/ft³. Normally, the
AAB Blue Maxx wall can be covered by light-weight stucco, brick,
or siding on the outside. Gypsum board is used to finish interior
wall surface. For the hot box tests, an unfinished wall was used.
Thermal conductivities of the wall form
foam was tested by Oak Ridge National Laboratory Building Technolody Center (ORNL BTC) using hot plate
apparatus - ASTM C 518-91. Thermal conductivity of expanded polystyrene
foam at mean temperature 75 deg.F was k a = 0.2550 Btu-in./hft²F.
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