Crack Control in Concrete Masonry Walls
This presentation addresses the proper application of empirical crack control measures into concrete masonry wall systems as presented in NCMA TEK 10-2D. It includes causes of cracking, use of control joints and horizontal reinforcement to minimize cracking, details and banding (mixing courses of clay and concrete masonry).
- Causes of cracking in concrete masonry
- How to minimize cracking potential
- How to control cracking through the use of reinforcement and control joints
- How to maintain the fire resistance rating of a concrete masonry wall at a control joint
Keywords: banding, bond beams, carbonation, concrete masonry, construction details, control joints, crack control, expansion joints, joint reinforcement, movement, reinforcing steel, shrinkage, thermal movement, wall movement