S.W.GARRITY University of Bradford

A survey of seven, 3m high reinforced cellular brickwork walls was carried out to identify any defects that might impair their long-term performance. The defects found included plastic shrinkage cracking, drying shrinkage cracking and plastic settlement cracking of the infill concrete; shrinkage cracking of the mortar joints; voids in the infill concrete due to inadequate compaction and de-bonding of the horizontal steel reinforcement due to plastic settlement of the infill concrete. Based on the results of the survey, it appears that many of the aforementioned defects can be avoided if low water absorption clay bricks (WA < 7%) are used with well compacted, medium workability infill concrete with a w/c ratio of about 0.5.