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Fire & Water - Cleanup & Restoration

Dry Ice Blasting

7/8/2015 (Permalink)

 Dry ice-blasting is a form of abrasive blasting, where dry ice, the solid form of carbon dioxide, is accelerated in a pressurized air stream and directed at a surface in order to clean it. This method is used to clean fire damaged structures. It is quicker, cleaner and more cost effective.

Dry-ice blasting involves propelling pellets at extremely high speeds. The actual dry-ice pellets are quite soft, and much less dense than other media used in blast-cleaning (i.e. sand or plastic pellets). Upon impact, the pellet sublimates almost immediately, transferring minimal kinetic energy to the surface on impact and producing minimal abrasion. The sublimation process absorbs a large volume of heat from the surface, producing shear stresses due to thermal shock. This is assumed to improve cleaning as the top layer of dirt or contaminant is expected to transfer more heat than the underlying substrate and flake off more easily. The efficiency and effectiveness of this process depends on the thermal conductivity of the substrate and contaminant. The rapid change in state from solid to gas also causes microscopic shock waves, which are also thought to assist in removing the contaminant.

SERVPRO of Carbondale/Clarks Summit/Old Forge is Northeastern Pennsylvania's premier fire restoration company. https://plus.google.com/+SERVPROofCarbondaleClarksSummitOldForgeTaylor/posts/5iyS8vofc74

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