Sheldon is the Research Manager of the Opus Research Asset Performance Group. He is recognised as a Technical Principal in the field of concrete materials.

Sheldon brings to the Asset Performance Group 28 years in concrete materials technology. He specialises in site investigation of deteriorating concrete structures including bridges, wharves, chimneys, towers, buildings, pipelines and treatment plants.

Sheldon has extensive experience in the investigation and repair of concrete damaged by reinforcement corrosion in New Zealand as well as Australia and the Pacific Islands. He is actively involved in research into various aspects of concrete durability.