RAP-3: Spall Repair by Low-Pressure Spraying

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Spall Repair by Low-Pressure Spraying

Low-velocity, low-pressure sprayed mortar used for spall repair comes in the form of prepackaged mortar. The spray is applied using small concrete pumps or heavy-duty grout pumps to force the low-slump mortar through a hose. Air is added at the nozzle to impel the mortar. Bond with the prepared substrate is achieved through a combination of proper surface preparation, low-velocity impact, and the material properties of the prepackaged mortar.


Document Details

Author: ACI Committee E706

Publication Year: 2011


Categories: Repair

Formats: PDF


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