Pile Adfreeze with Active Refrigeration

Pile Adfreeze with Active Refrigeration

Structural supports (piles) are driven to below the anticipated melt point of the permafrost. This can be done via auger drilling and placed the pile into the hole, or hammering the pile into the surface until refusal. The pile is augmented with a sand and water slurry (adfreeze). The type and size of the pile will be determined by the available materials, cost, labor, and site conditions. Piling foundations can be constructed with minimal disturbance to the thermal regime of the site. Piles can be timber, concrete. steel, or composites. Piles are susceptible to heaving forces coming from the active zone during the winter and must be inputted at a proper depth to ensure adequate resistance. Mechanical refrigeration has been incorporated to maintain the thermal regime. Refrigeration coils should either be straight pipes running parallel to the pile axis, or spiral tubing around the pile for a non-driven pile.