Question
What is grit blasting?
Expert Answer
Grit blasting (or abrasive blasting) involves firing abrasive particles at high speed against a concrete surface. It is used to clean steel rebar of rust (Sa 2.5 standard) and to roughen concrete surfaces (laitance removal). It is one of the most effective methods for surface preparation, ensuring that repair mortars and coatings have a clean, sound, and textured surface to adhere to.
Related Questions
What is 'laitance' and why remove it?
Surface Preparation
Construction
What is Concrete Surface Profile (CSP)?
Surface Preparation
Construction
What is scabbling?
Surface Preparation
Construction
How deep should concrete cover be over rebar?
Standards
Construction
What is Alkali-Silica Reaction (ASR)?
Diagnosis & Testing
Construction
