Before applying structural repair mortar to prepared concrete, which surface condition best supports bond in common QA practice?
Choices
- (A) Leave a fine dust layer for grip
- (B) Open, clean, SSD moisture condition per product data without standing water
- (C) Keep the surface bone-dry with no misting
- (D) Oil-coat to prevent cracking
Correct answer: (B)
Open, clean, SSD moisture condition per product data without standing water
Explanation
SSD conditioning balances absorption without a film of free water.