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Laying the bricks

Masking tape marks out the floor plan. This is the chimney end.

In Cambodia the kiln would be built on compacted sand. Care is taken to choose a site that will not flood.  In the Massachusetts the preference is to build on a concrete pad reinforced with steel. Water is also a challenge. Crushed stone and a vapor barrier beneath the concrete help keep the pad from absorbing water.  During firing any water in the pad would form steam and cause the concrete to spall. Our kiln floor will have three layers of brick, including an insulating brick layer, to prevent the concrete from getting too hot.

The floor is complete and Proeung begins to raise the perimeter walls.

The bricks can be stacked dry, but since the bricks can vary slightly in size, a mortar of fireclay and grog helps to keep the walls perfectly level.

Proeung is laying out the ware chamber door opening. The door will be loose bricks that are stacked dry for each firing. He is determining the space to allow for the door.

These columns will support the upper fire box. Proeung is in the ware chamber checking for level.

This view looks across the length of the kiln from the firebox in the foreground to the chimney beyond.

Oversize bricks span the fire box creating a grate. Embers and ash will fall through the spaces into the bourry box below.

The walls are 9 inches thick, two layers of brick. The light color brick is insulating brick, and will help prevent heat loss making the kiln more efficient.

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Posted: Monday, July 30, 2012 10:42 AM by rackm

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