ccf46e02_ction_of_Concrete___InterNACHI__Primary_Cause
[Type of Cracking] Freezing and thawing [Form of Crack] Parallel to the concrete surface [Time of Appearance] After one or more winters [Primary Cause] 
Inadequate air entrainment; non-durable coarse aggregate
Visual Inspection of Concrete - InterNACHI
Primary Cause