Civil Engineering Reference
In-Depth Information
Hemp spraying machine.
The hemp and binder slurry are mixed together at the nozzle of the sprayer. Due to the
force with which it is projected out of the nozzle, spray-applied hempcrete adheres firmly
to the surface on to which it is sprayed. Usually this surface is a permanent internal shut-
tering board, from which the hempcrete is gradually built out to the desired wall thickness
in several passes. There is no need for a shuttering board on the other face of the wall - all
that is required is the skill to build up a flat wall.
With spray application the structural frame is usually positioned on the inside face of the
walls, where the permanent shuttering boards can be attached to it. However, since the
spraying machine cannot spray around corners, to make the most of this method of applic-
ation an open, easily accessible frame is required.
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