RAP-3: Concrete Repair by Low-Velocity Spraying

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Concrete Repair by Low-Velocity Spraying

Low-velocity spray mortars can be used for structural or non-structural repairs based on the design. Low-velocity sprayed concrete repair materials are prepackaged mortars applied using purpose-built mortar pumps or small concrete pumps that force the mixed, low-slump mortar through a hose to the nozzle where air is added to accelerate and expel the mortar. This document reviews when to use this repair method, how to prepare the surface, material selection, equipment used, and safety considerations.



Document Details

Author: ACI Committee E706

Publication Year: 2021

Formats: PDF


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