Aluminum

Aluminum has become an increasingly popular material for many formwork applications such as lightweight panels, joists, horizon­tal and vertical shoring, and aluminum trusses for flying forms. The popularity of aluminum stems from its light weight which re­duces handling costs and offsets its higher initial material cost. When compared to steel panels, aluminum panels used for ganged forms weigh approximately 50 percent less. The major problem

Aluminum

Aluminum

Face Grain Direction

 

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b. Weak orientation of plywood
(Face grain perpendicular to span)

 

Figure 1.6 Plywood orientation.

 

Aluminum

Aluminum

Figure 1.7 Steel formwork.

 

with aluminum forms is corrosion: Pure aluminum is attacked chemically by wet concrete. Aluminum alloys have proven to be very successful in resisting corrosion. Figure 1.8 shows aluminum panels used for wall forms.